ABJ 320-4NM - Scale Kern - Free user manual and instructions

Brand	Kern
Model	ABJ 320-4NM
Product type	Precision balance
Readability (d)	0.1 mg
Weighing range (max)	320 g
Minimum load (Min)	10 mg
Calibration class	I
Reproducibility	0.2 mg
Linearity	±0.3 mg
Stabilization time	3 s
Internal adjustment	Yes (automatic via PSC)
Weighing units	g, mg, ct
Weighing pan	Stainless steel, Ø 91 mm
Case dimensions (L x W x H)	210 x 340 x 325 mm
Weighing chamber (draft shield)	174 x 162 x 227 mm
Net weight	6 kg
Power supply	AC adapter 100-240 V, 50/60 Hz; Balance DC 12 V, 1.25 A
Interface	RS-232C
Main functions	Simple weighing, taring, parts counting, percentage determination, recipe mode, checkweighing, target weighing, automatic and manual adjustment
Operating conditions	Indoor, +10°C to +30°C, humidity 20–85% non-condensing
Maintenance and cleaning	Clean with a damp cloth and mild detergent; remove glass doors for cleaning
Safety	Use only indoors; avoid overloads, vibrations, electromagnetic fields, and excessive humidity
Supplied accessories	Balance, weighing pan, glass draft shield, AC adapter, instruction manual, menu overview
Repairability	Opening and repair reserved for personnel authorized by Kern

Frequently Asked Questions - ABJ 320-4NM Kern

How to perform adjustment of the ABJ 320-4NM balance?

Adjustment can be automatic (via the built-in PSC function) or manual. For manual adjustment, press the CAL key for 3 seconds, select I.CAL (internal) or E.CAL (external), then follow the on-screen instructions. Make sure the pan is empty and the balance is stable.

What to do if the display does not turn on?

Check that the balance is turned on and the AC adapter is properly connected. If the problem persists, try another outlet or check the power cord. If the screen remains off, contact customer service.

How to use the parts counting mode?

Activate PCS mode via the menu. Place an empty container, tare, then press MENU twice. Select the reference piece count (5, 10, 20, 50, or 100). Add the corresponding number of pieces, wait for stability, and confirm with TARE. The balance will then count all pieces placed.

How to change the weighing unit?

Press the UNIT key to switch between activated units (g, mg, ct). To enable or disable units, press and hold UNIT for 3 seconds, then navigate the menu to check the desired units.

What do the HI, OK, LO indicators on the display mean?

These indicators appear in Checkweighing or Target mode. HI means the weight is above the upper limit, OK within tolerances, LO below the lower limit. Thresholds are set in the menu.

How to clean the balance without damaging it?

Before cleaning, disconnect the balance. Use a soft, slightly damp cloth with mild detergent. Do not use solvents or abrasive products. The stainless steel pan can be removed and washed with water. The glass doors can be carefully disassembled.

Why does the balance display 'ERR C' during adjustment?

The ERR C error indicates a significant zero point offset. This may be due to objects on the pan, a missing pan, or vibrations. Empty the pan, ensure it is properly installed, then repeat the adjustment.

How to lock the menu to prevent unwanted changes?

Put the balance in standby mode (display OFF or READY). Press MENU for 3 seconds, enter the password (default 9999), then confirm with TARE. The symbol appears. To unlock, repeat the same procedure.

What accessories are available for this balance?

Kern offers compatible printers (e.g., YKB-01N), RS-232 interface cables, external adjustment weights (class E2), and anti-vibration supports. Visit the Kern website for the complete list.

How to transfer weighing data to a PC?

Connect the balance to a PC via the RS-232C port with a suitable cable. Configure the communication parameters (baud rate, parity, etc.) in the COMM.SET menu to match those of the PC. Use the PRINT key to send the displayed value.

USER MANUAL ABJ 320-4NM Kern

Digital laboratory balance with digital display and control buttons (no visible text or symbols on main body)

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KERN ABS-N\_ABJ-NM

Version 1.5 08/2017

Betriebsanleitung

Analysenwaage

Inhaltsverzeichnis

15.1 Checkweighing 68

15.2 Target mode....72

16 Datenausgang 75

16.1 Pinbelegung 75

Im Menü:

Line drawing of a hand holding a transparent laboratory balance with a circular sample on the side (no text or symbols)

graph TD
    A["Wheel"] --> B["Wheel with Rotation Arrow"]
    C["Wheel"] --> D["Wheel with Rotation Arrow"]
    E["Wheel"] --> F["Wheel with Rotation Arrow"]
    G["Wheel"] --> H["Wheel with Rotation Arrow"]
    I["Wheel"] --> J["Wheel with Rotation Arrow"]
    K["Wheel"] --> L["Wheel with Rotation Arrow"]

m = 311

B.9600

图

m = 311

m = 311

N

Abb. 1: Waage reinigen

Line drawing of a laboratory balance scale with an attached circular component (no text or symbols)

Line drawing of a hand holding a tool, no text or symbols present

Line drawing of an analog laboratory balance with a circular base and lid, showing internal components and a downward arrow indicating motion (no text or symbols)

Operating instructions

Analytical balance

Table of Contents

1 Technical Specifications .... 4

2 Declaration of conformity....7

3 Appliance overview....8

3.1 Keyboard overview....9

3.1.1 Numeric entry 10

3.2 Overview of displays....11

4 Basic Information (General)....12

4.1 Proper use 12

4.2 Improper Use....12

4.3 Warranty 12

4.4 Monitoring of Test Resources....13

5 Basic Safety Precautions....13

5.1 Pay attention to the instructions in the Operation Manual 13

5.2 Personnel training 13

6 Transportation & Storage....13

6.1 Testing upon acceptance 13

6.2 Packaging / return transport 14

7 Unpacking, Setup and Commissioning.... 16

7.1 Installation Site, Location of Use 16

7.2 Unpacking and checking 16

7.2.1 Scope of delivery / serial accessories 17

7.2.2 Placing....18

7.3 Mains connection 19

7.3.1 Turning On the Power.... 19

7.4 Initial Commissioning 19

7.5 Connection of peripheral devices....19

8 Adjustment 20

8.1 Automatic adjustment by PSC (Perfect Self Calibration), only models ABJ....20

8.2 Menu settings „I.CAL“ / „E.CAL“ 23

8.2.1 Adjustment with internal weight (KERN ABJ) 24

8.2.2 Adjustment with external weight (KERN ABS) 25

8.3 Adjustment log....26

8.4 Balance identification no....27

9 Verification 28

10 Weighing....30

10.1 Switch-on balance / call-up weighing mode....30

10.2 Switch off the balance....30

10.3 Set the start display....31

10.4 Auto Power-Off function (automatic switch-off function) 33

10.5 Simple weighing 34

10.6 Taring 35

10.7 Switch-over weighing unit 36

10.7.1 Freely programmable weighing unit 37

10.7.2 Change position of decimal dot for freely programmable weighing unit 38

10.7.3 Input minimum weight for freely programmable weighing unit....38

10.8 Change readability (1D/10D).... 39

10.9 Display decimal dot as point or comma.... 40

11 Menu 41

11.1 Menu symbol....41

11.2 Navigation in the menu 42

11.3 Menu overview 43

11.4 Resetting the menu 44

11.5 Menu Lock 45

11.5.1 Change password 46

11.6 Log menu settings....47

12 Zero / tare menu (zeroing and taring functions)...... 48

12.1 Zero tracking function....49

12.2 Auto zero function....50

12.3 Auto Tare function....51

12.4 Zero / tare timing change function 52

13 Settings for Stability and Response.... 53

13.1 Stability and reaction settings via „Easy Setting display“ (without invoking menu) ..... 53

13.2 Selection weighing / dosing mode 54

13.3 Standstill width 55

14 Application Functions 57

14.1 Parts counting 57

14.2 Percent determination....60

14.2.1 Reference weight = 100 %....61

14.2.2 User-defined reference 62

14.2.3 Percent determination....63

14.3 Formula mode....64

14.3.1 Enable edition „component no.“ 66

14.3.2 Enable issue „TOTAL“ 67

15 Check weighing and target mode (check and target weighing).... 68

15.1 Check weighing 68

15.2 Target mode....72

16 Data output....75

16.1 Pin connection....75

16.2 Issue functions 76

16.2.1 Automatic data output / Auto Print function....76

16.2.2 Continuous Output function....78

16.2.3 Output Timing Change function 80

16.2.4 GLP Output function / balance identification number 81

16.3 Communication parameters....82

16.3.1 Selection of a standard setting „MODE 1 - MODE 5“ 83

16.3.2 User-defined settings „MODE U“ / setting for KERN -YKB-01N 84

16.4 Data Formats......88

16.5 Remote control instructions 92

17 Service, maintenance, disposal....93

17.1 Cleaning 93

17.2 Service, maintenance....95

17.3 Disposal....95

18 Instant help....95

18.1 Error messages 96

1 Technical Specifications

KERN ABJ	80-4NM	ABJ 120-4NM	ABJ 220-4NM	ABJ 320-4NM
Readability (d)	0.1 mg	0.1 mg	0.1 mg	0.1 mg
Weighing range (max)	82 g	120 g	220 g	320 g
Minimum load (Min)	10 mg	10 mg	10 mg	10 mg
Verification value (e)	1 mg	1 mg	1 mg	1 mg
Verification class	I	I	I	I
Reproducibility	0.2 mg	0.2 mg	0.2 mg	0.2 mg
Linearity	± 0.3 mg	± 0.3 mg	± 0.3 mg	± 0.3 mg
Stabilization time	3 sec.
Adjustment weight	internal
Warm-up time	4 h	8 h	8 h	8 h
Weighing Units	mg, g	mg, g, ct
Smallest part weight for piece counting	1 mg
Reference quantities at piece counting	5, 10, 20, 50,100
Weighing plate, stainless steel	ø 91mm
Dimensions of the housing (B x D x H) [mm]	210 x 340 x 325
Dimensions Glass wind screen [mm]	174 x 162 x 227 (weighing space)
Net weight (kg)	6
Permissible ambient condition	+10°C bis +30°C
Humidity of air	20 ~ 85 % relative (not condensing)
AC adapter (Primary)	AC 100 -240 V, 400 mA 50/60Hz
Rated electric power supply	DC 12 V, 1.25 A
Pollution Degree 2
Overvoltage Category	Category II
Altitude	Up to 2000 m
Installation Site	device may only be used indoors
KERN ABS 80-4N ABS 120-4N
Readability (d)	0.1 mg	0.1 mg
Weighing range (max) 82 g	120 g
Reproducibility	0.2 mg	0.2 mg
Linearity	± 0.3 mg	± 0.3 mg
Recommended adjusting weight not supplied (class)	80 g (E2) 100 g (E2)
Warm-up time	4 h	8 h
Stabilization time	3 sec.
Weighing Units	mg, g	mg, g, ct
Smallest part weight for piece counting	1 mg
Reference quantities at piece counting	5, 10, 20, 50,100
Weighing plate, stainless steel	ø 91mm
Dimensions of the housing (B x D x H) [mm]	210 x 340 x 325
Dimensions Glass wind screen [mm]	174 x 162 x 227 (weighing space)
Net weight (kg)	6
Permissible ambient condition	+5°C to +40°C
Humidity of air	20 ~ 85 % relative (not condensing)
AC adapter (Primary)	AC 100 -240 V, 400 mA 50/60Hz
Rated electric power supply	DC 12 V, 1.25 A
Pollution Degree	2
Overvoltage Category	Category II
Altitude	Up to 2000 m
Installation Site	device may only be used indoors
KERN ABS 220-4N ABS 320-4N
Readability (d)	0.1 mg	0.1 mg
Weighing range (max)	220 g	320 g
Reproducibility	0.2 mg	0.2 mg
Linearity	± 0.3 mg	± 0.3 mg
Recommended adjusting weight not supplied (class)	200 g (E2) 300 g (E2)
Stabilization time 3 sec.
Warm-up time 8 h
Weighing Units	mg, g, ct
Smallest part weight for piece counting	1 mg
Reference quantities at piece counting	5, 10, 20, 50,100
Weighing plate, stainless steel	ø 91mm
Dimensions of the housing (B x D x H) [mm]	210 x 340 x 325
Dimensions Glass wind screen [mm]	174 x 162 x 227 (weighing space)
Net weight (kg) 6
Permissible ambient condition	+5°C to +40°C
Humidity of air	20 ~ 85 % relative (not condensing)
AC adapter (Primary)	AC 100 -240 V, 400 mA 50/60Hz
Rated electric power supply	DC 12 V, 1.25 A
Pollution Degree	2
Overvoltage Category	Category II
Altitude	Up to 2000 m
Installation Site	device may only be used indoors

2 Declaration of conformity

To view the current EC/EU Declaration of Conformity go to:

www.kern-sohn.com/ce

i The scope of delivery for verified weighing balances (= conformity-rated weighing balances) includes a Declaration of Conformity.

3 Appliance overview

1. Weighing plate
2. Display
3. Keyboard
4. Levelling screw
5. Bubble level
6. Name plate
7. Wind protection
8. Appliance interface
9. Mains adapter connection

3.1 Keyboard overview

In menu:

Key Designation:		Function
		Pressed once and released	Keep pressed for about 3 seconds	In menu
	ON/OFF	Switches between the operation and standby modes.	-	Menu item back.Return to weighing mode:Press ON/OFF repeatedly or for 3 s.Cancel procedure
	CAL	Start adjustment	Invoke calibration menu	-
	TARE	Tare or set weight display to zero	Invoke zero / tare menu	Confirm entry
	UNIT	Switch-over weighing unit.Display stored reference weight (PCS, %).	Invoke unit setting menu.	Scroll forward in menu
	Navigation key ↑
	MENU		Switch over weighing mode / application mode	Invoke main menu (press twice)Scroll backwards in menu
	Navigation key ↓
	PRINT	Calculate weighing data via interface	Invoke Data Output menu	Select next menu item.
	Navigation key →

3.1.1 Numeric entry

Key	Designation:	Function
	Navigation key ↑	Increase flashing digitShift flashing decimal dot to the left
	Navigation key ↓	Decrease flashing digitShift flashing decimal dot to the right
	Navigation key →	Digit selection to the right
	Navigation key ←Confirm entry
	ESC Cancel input

With numerical input the indicator [#] appears.

3.2 Overview of displays

Display	Description	see chpt.
	Battery symbol
	Zero tracking function active	+ Chpt.12.1
	Displays adjustment	+ Chpt. 8.2.1
	Flashes prior to start of automatic adjustment, only models ABJ	+ Chpt. 8.1
	Stability and reaction settings via „Easy Setting display“	+ Chpt.13.1
	Balance is in dosing mode (pouring mode)	+ Chpt. 13.2
	Balance is in formula mode	+ Chpt. 14.3
	Menu lock active	+ Chpt. 11.5
	Menu symbol	+ Chpt. 11.2
	Auto Print function active	+ Chpt. 16.2.1
	Not documented
	Log menu settings
	Tolerance marks in check weighing and target mode	+ Chpt. 15
	The stability display indicates that the weighing value is stable. Highlights current setting in the menu.
	Negative weighed value
	Stand-by mode	+ Chpt. 10.2
	Ready for start formulation	+ Chpt. 14.3
	Ready for start continuous data output („MANU ON“)	+ Chpt. 16.5.2
	Indicates numeric value entry.	+ Chpt. 3.1.1
	Shows the stored reference in piece number or percent determination mode.	+ Chpt.14.1+ Chpt.14.2.3
	Net weight in formula mode	+ Chpt. 14.3
	Total weight (TOTAL) of all components in formula mode	+ Chpt. 14.3
	Memory space piece weight	+ Chpt.14.1
	Change position decimal dot for freely programmable weighing unit	+ Chpt.10.7.2
	Balance is in piece counting mode	+ Chpt.14.1
	Balance is in percent determination mode with user-defined reference weight	+ Chpt.14.2.1
	Balance is in percent determination mode, reference weight =100%	+ Chpt.14.2.2

4 Basic Information (General)

4.1 Proper use

The balance you purchased is intended to determine the weighing value of material to be weighed. It is intended to be used as a “non-automatic” balance, i.e. the material to be weighed is manually and carefully placed in the centre of the weighing plate. As soon as a stable weighing value is reached the weighing value can be read.

4.2 Improper Use

Do not use balance for dynamic add-on weighing procedures, if small amounts of goods to be weighed are removed or added. The “stability compensation” installed in the balance may result in displaying an incorrect measuring value! (Example: Slowly draining fluids from a container on the balance.)

Do not leave permanent load on the weighing plate. This may damage the measuring system.

Impacts and overloading exceeding the stated maximum load (max) of the balance, minus a possibly existing tare load, must be strictly avoided. Balance may be damage by this.

Never operate balance in explosive environment. The serial version is not explosion protected.

The structure of the balance may not be modified. This may lead to incorrect weighing results, safety-related faults and destruction of the balance.

The balance may only be used according to the described conditions. Other areas of use must be released by KERN in writing.

4.3 Warranty

Warranty claims shall be voided in case

• Our conditions in the operation manual are ignored
- The appliance is used outside the described use
• The appliance is modified or opened
• Mechanical damage or damage by media, liquids, natural wear and tear
- The appliance is improperly set up or incorrectly electrically connected
• The measuring system is overloaded

4.4 Monitoring of Test Resources

In the framework of quality assurance the measuring-related properties of the balance and, if applicable, the testing weight, must be checked regularly. The responsible user must define a suitable interval as well as type and scope of this test. Information is available on KERN's home page (www.kern-sohn.com with regard to the monitoring of balance test substances and the test weights required for this. In KERN's accredited DKD calibration laboratory test weights and balances may be calibrated (return to the national standard) fast and at moderate cost.

5 Basic Safety Precautions

5.1 Pay attention to the instructions in the Operation Manual

Carefully read this operation manual before setup and commissioning, even if you are already familiar with KERN balances.

5.2 Personnel training

The appliance may only be operated and maintained by trained personnel.

6 Transportation & Storage

6.1 Testing upon acceptance

When receiving the appliance, please check packaging immediately, and the appliance itself when unpacking for possible visible damage.

6.2 Packaging / return transport

→ Keep all parts of the original packaging for a possibly required return.

→ Only use original packaging for returning.

→ Prior to dispatch disconnect all cables and remove loose/mobile parts.

→ Reattach possibly supplied transport securing devices.

⇒ Secure all parts such as the glass wind screen, the weighing platform, power unit etc. against shifting and damage.

Line drawing of a hand holding a transparent laboratory balance with a circular sample inside (no text or symbols)

7 Unpacking, Setup and Commissioning

7.1 Installation Site, Location of Use

The balances are designed in a way that reliable weighing results are achieved in common conditions of use.

You will work accurately and fast, if you select the right location for your balance.

Therefore, observe the following for the installation site:

• Operate the device only indoors.
• Place the balance on a firm, level surface;
• Avoid extreme heat as well as temperature fluctuation caused by installing next to a radiator or in the direct sunlight;
• Protect the balance against direct draughts due to open windows and doors;
• Avoid jarring during weighing;
• Protect the balance against high humidity, vapours and dust;
• Do not expose the device to extreme dampness for longer periods of time. Non-permitted condensation (condensation of air humidity on the appliance) may occur if a cold appliance is taken to a considerably warmer environment. In this case, acclimatize the disconnected appliance for ca. 2 hours at room temperature.
• Avoid static charge of goods to be weighed or weighing container.

If electro-magnetic fields or static charge occur, or if the power supply is unstable major deviations on the display (incorrect weighing results) are possible. In that case, the location must be changed.

7.2 Unpacking and checking

Open package, take out the appliance and accessories. Verify that there has been no damage and that all packing items are present.

7.2.1 Scope of delivery / serial accessories

1. Balance
2. Weighing plate
3. Carrier weighing plate
4. Screening ring
5. Mains adapter
6. Operating instructions
7. Menu overview

7.2.2 Placing

Attach circular screen, carrier of weighing plate and weighing plate in order.

→ Level balance with foot screws until the air bubble of the water balance is in the prescribed circle.

graph LR
    A["Circle Component"] --> B["Device with Rotation Arrow"]
    C["Circle Component"] --> D["Device with Rotation Arrow"]

graph TD
    A["Top Component"] --> B["Downward Rotation Arrow"]
    C["Bottom Component"] --> D["Upward Rotation Arrow"]
    style A fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333

→ Check levelling regularly

7.3 Mains connection

Power is supplied via the external mains adapter. The stated voltage value must be the same as the local voltage.

Only use original KERN mains adapters. Using other makes requires consent by KERN.

7.3.1 Turning On the Power

⇒ Supply power to balance via mains adapter. The display lights up and the balance carries out a selftest. In the ABJ models an automatic adjustment takes place.

⇒ The selftest is completed when „OFF“ appears on the display.

7.4 Initial Commissioning

In order to obtain exact results with the electronic balances, your balance must have reached the operating temperature (see warming up time chpt. 1). During this warming up time the balance must be connected to the power supply (mains, accumulator or battery).

The accuracy of the balance depends on the local acceleration of gravity. Strictly observe hints in chapter Adjustment.

7.5 Connection of peripheral devices

Before connecting or disconnecting of additional devices (printer, PC) to the data interface, always disconnect the balance from the power supply.

With your balance, only use accessories and peripheral devices by KERN, as they are ideally tuned to your balance.

8 Adjustment

As the acceleration value due to gravity is not the same at every location on earth, each balance must be coordinated - in compliance with the underlying physical weighing principle - to the existing acceleration due to gravity at its place of location (only if the balance has not already been adjusted to the location in the factory). This adjustment process must be carried out for the first commissioning, after each change of location as well as in case of fluctuating environment temperature. To receive accurate measuring values it is also recommended to adjust the balance periodically in weighing operation. Observe stable environmental conditions. A warming up time (see chapter 1) is required for stabilization. Ensure that there are no objects on the weighing plate.

8.1 Automatic adjustment by PSC (Perfect Self Calibration), only models ABJ

The default setting for balances of the series ABJ prompts automatic adjustment via the PSC function (cannot be switched off).

The moment a change in temperature is detected this function uses the internal tare weight to carry out fully-automatic adjustment with the help of a temperature sensor. Adjustment in weighing mode is carried out automatically under the following conditions:

(1) When there is a change in the surrounding temperature ( t 2°C)
(2) When about four hours has passed since the previous calibration.
(3) When the balance is switched from standby status to weighing mode and condition (1) or (2) has been met.

If one of the above conditions was met in weighing mode, the weight symbol flashes for about two minutes in order to notify the pending adjustment;

Case 1: The load on the weighing plate is near zero.

The weight symbol PSC flashes for approx. two minutes, followed by „PSC.RUN“. After that the internal adjustment is started automatically. In order to ensure proper PSC operation, prevent vibrations and air flow.

As soon as the display in grams reappears after completing adjustment via PSC, the balance returns to weighing mode.

Case 2: Weighing plate loaded

The gram display flashes for two minutes, followed by „PLS.CAL“.

Unload weighing plate. The gram display flashes again for 2 minutes; after that the internal adjustment is started automatically. In order to ensure proper PSC operation, prevent vibrations and air flow.

As soon as the display in grams reappears after completing adjustment via PSC, the balance returns to weighing mode.

To prevent a start-up of adjustment during a measuring process, actuate the ON/OFF button as soon as „PLS.CAL“ is displayed. The gram display flashes again for two minutes, followed by „PLS.CAL“.

8.2 Menu settings „I.CAL“ / „E.CAL“

⇒ To invoke the adjustment function in weighing mode, press CAL for 3 sec.

Acknowledge using PRINT, the current setting is displayed.
⇒ Select the desired adjustment using the navigation keys (↓ ↑)

I.CAL: Adjustment with internal weight (see chpt. 8.1)

E.CAL: Adjustment with external weight (see chpt. 8.2)

→ Confirm with TARE

⇒ Press ON/OFF repeatedly or 3 sec., the balance will return into weighing mode

i The saved adjustment (I.CAL or E.CAL) can now directly be invoked via the CAL button.

8.2.1 Adjustment with internal weight (KERN ABJ)

With the internal adjustment weight, the weighing accuracy can be checked and re-adjusted at any time.

• Condition: Menu setting „I.CAL“.
- When an optional printer is connected and the GLP function activated, while starting the adjustment log „WAIT“ will be displayed. After the printout the adjustment will be continued automatically.
- Adjustment may be interrupted with ON/OFF, „ABORT“ is displayed.

⇒ Press the CAL-button and adjustment will take place automatically.

The indicator will be shown.

⇒ After successful adjustment the balance automatically returns to weighing mode.

In case of an adjustment error (e.g. objects on the weighing plate) the display will show an error message, repeat adjustment.

When an optional printer is connected and the GLP function is connected, the adjustment log will be edited, see chpt. 8.3.

8.2.2 Adjustment with external weight (KERN ABS)

• Condition: Menu setting „E.CAL“.

- The weight to be used depends on the capacity of the scale. Carry out adjustment as near as possible to the balance's maximum weight (recommended adjustment weight see chpt. 1). Weights of different nominal values or tolerance classes may be used for adjustment but are not optimal for technical measuring. The accuracy of the adjustment weight must correspond approximately to or, if possible, be better than, the readability of the balance.

Minimum weight „Adjustment weight“:

ABS 80-4N / ABS 120-4N : 50 g

ABS 220-4N / ABS 320-4N:100 g

Information about test weights you will find in the internet under:

http://www.kern-sohn.com

- When an optional printer is connected and the GLP function activated, while starting the adjustment log „WAIT“ will be displayed. After the printout the adjustment process will be continued automatically.

- If during the adjustment process within 60 s no operation is carried out, „ERR C“ will be displayed. Press ON/OFF a restart.

In weighing mode press CAL. The weight value of the recommended adjustment weight (see chpt. 1) appears flashing. The indicator will be shown.

If the value shall be changed, press MENU, the active digit flashes.

Carry out the desired setting using navigation buttons (see chapter 3.1.1 „Numeric input“).

With flashing adjustment weight display, place the adjustment weight carefully on the center of the weighing plate within 60 s. Close wind screen doors completely.

→ Wait until the zero display flashes.

⇒ Take away the adjustment weight and close the wind screen doors. After successful adjustment the balance automatically returns to weighing mode. In case of an adjustment error (e.g. objects on the weighing plate) the display will show an error message, repeat adjustment.

When an optional printer is connected and the GLP function is connected, the adjustment log will be edited, see chpt. 8.3.

8.3 Adjustment log

This function enables automatic log issue after each adjustment. These logs may be issued by using an optional printer.

Printout example (KERN YKB-01N):

CAL-EXTERNAL

KERN & Sohn GmbH

TYPE ABJ 220-4NM

SN WBIAB000I

ID 1234

REF 200.0000g

BFR 200.0001g

AFT 200.0000g

-COMPLETE

-SIGNATURE-

Mode of adjustment

Company

Model

Serial no.

Balance identification no. (see chpt. 8.4)

Used adjustment weight

Before adjustment

After adjustment

prepared by

Make sure that the communication parameter of balance and printer are the same.

Call function

In weighing mode press the CAL key for 3 sec.

⇒ Use the navigation buttons (↓↑) to select „GLP.OUT“. The current setting is marked by the stability display (→

With stability display (→ Function activated

Without stability display (→ Function disabled

CAL.ExE

GLP.OUT

GLP.OUT

GLP.OUT

How to change settings

→ Press TARE

⇒ Press ON/OFF repeatedly or for 3 sec., the balance will return into weighing mode

8.4 Balance identification no.

This setting is for the balance ID number that is output along with the adjustment report.

Call up menu

In weighing mode press the MENU button twice

Select menu item

⇒ Press the navigation buttons (↓↑) repeatedly until „TOOLS“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „SYSTEM“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓↑) repeatedly until „BAL.ID“ is displayed.
⇒ Press TARE, the currently set ID no. is displayed (factory setting 0000).

Enter balance identification no. (max. 4 characters)

⇒ Enter the desired ID no. using navigation buttons (see chapter 3.1.1 „Numeric input“).

⇒ Press ON/OFF repeatedly or 3 sec., the balance will return into weighing mode

9 Verification

General introduction:

According to EU directive 90/384/EEC or 2009/23EG balances must be officially verified if they are used as follows (legally controlled area):

a) For commercial transactions if the price of goods is determined by weighing.
b) For the production of medicines in pharmacies as well as for analyses in the medical and pharmaceutical laboratory.
c) For official purposes
d) For manufacturing final packages

In cases of doubt, please contact your local trade in standard.

Verification notes:

An EU type approval exists for balances described in their technical data as verifiable. If a balance is used where obligation to verify exists as described above, it must be verified and re-verified at regular intervals.

Re-verification of a balance is carried out according to the respective national regulations. The validity for verification of balances in Germany is e.g. 2 years.

The legal regulation of the country where the balance is used must be observed!

Verification of the balance is invalid without the seal.

The seal marks attached on verified balances point out that the balance may only be opened and serviced by trained and authorised specialist staff. If the seal mark is destroyed, verification looses its validity. Please observe all national laws and legal regulations. In Germany a re-verification will be necessary.

Position of seals

③ Seal
⑤ Data plate
⑥ Seal

10 Weighing

10.1 Switch-on balance / call-up weighing mode

Status balance	Call-up weighing mode
Display switched off	Press ON/OFF.After display press any key
Display OFF	Press any key
Display READY
All segments light up
Balance is in menu	Press ON/OFF repeatedly or for 3 sec.
After numeric input

10.2 Switch off the balance

⇒ Press ON/OFF. The balance is in standby mode, that means that the balance is now in state ready-for-operation. Immediately after switching-on it is ready for operation (press any key) without warm-up time.
⇒ To switch-off the balance completely, separate balance from power supply.

If [WAIT] or [SET] are displayed, do not separate the balance from power supply.

10.3 Set the start display

For the start display you can choose between three types.

Start display	Explanation	Menu setting
1. Weighing mode	After connection to the power supply the balance will start in weighing mode.
2. Display OFF	After connection to the power supply the balance displays OFF After pressing a certain key the balance will carry out a segment test and start in weighing mode automatically.
3. All segments	After connection to the power supply the balance displays OFF After pressing any key the balance will carry out a segment test. Only after having pressed TARE the weighing mode will start.

Call up menu

→ In weighing mode press the MENU button twice

Select menu item

⇒ Press the navigation buttons (↓↑) repeatedly until „TOOLS“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „SYSTEM“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „START“ is displayed. The current setting is marked by the stability display (→).

Set display type

Acknowledge using PRINT, the current setting is displayed.
⇒ Use the navigation buttons (↓↑) to select the desired setting, e.g. „SEM.AUTO“.

Weighing mode

OFF display

All segments

→ Confirm with TARE. The current setting is marked by the stability display (→)

Return to weighing mode

⇒ Press ON/OFF repeatedly or for 3 sec.

START°

AUTO

SEM.AUTO

MANU

SET

SEM.AUTO

0.0000g

10.4 Auto Power-Off function (automatic switch-off function)

To save battery when function is enabled backlight of display will automatically switch off after a defined time during which there was no change of load or activity.

1. Call up menu

In weighing mode press the MENU button twice

2. Select function

⇒ Press the navigation buttons (↓↑) repeatedly until „TOOLS“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „SYSTEM“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓↑) repeatedly until „AUTO.OFF“ is displayed. The current setting is marked by the stability display (→).

Further steps depend on the desired setting:

Stability display (→)	Function	set/update	cancel
yesAUTO.OFF	ON	→	PressPRINTand continue with step 3.	PressTAREand continue with step 4.
noAUTO.OFF	off	→	PressTAREand continue with step 3.	continue with step 4.

3. Set time, after which the display has to switch off

Use the navigation key ( ) to enter the desired time in minutes (max. 99 min.), "Numeric input". see chpt. 3.1.1.

→ Confirm with TARE.

4. Return to weighing mode

⇒ Press ON/OFF repeatedly or for 3 sec.

10.5 Simple weighing

A warm-up time is required for stabilisation (see chpt. 1).

→ Wait for zero display, reset to zero using TARE.
→ Place the goods to be weighed and close the wind screen doors
→ Wait until the stability display appears [→].
→ Read weighing result.

When an optional printer is connected, the weighing value can be edited.

Print-out example with enabled GLP function (see chpt. 8.3):

Balance identification no. (see chpt. 8.4)

Measuring Value

prepared by

Print-out example with disabled GLP function (see chpt. 8.3):

50.0010 g

Measuring Value

10.6 Taring

The dead weight of any weighing container may be tared away by pressing a button, so that the following weighings show the net weight of the goods to be weighed.

⇒ Put vessel of goods to be weighed on weighing plate and close the wind screen doors.
Wait until the stability display appears () , then press TARE. The weight of the container is now internally saved.
→ Weigh the goods to be weighed and close the wind screen doors.
→ Wait until the stability display appears (→).
→ Read net weight.

Note:

i

• The balance is able to only store one taring value at a time.
• When the balance is unloaded the saved taring value is displayed with negative sign.
• To delete the stored tare value, remove load from weighing pan and press TARE.
• The taring process can be repeated any number of times. The limit is reached when the whole weighing range is exhausted.

10.7 Switch-over weighing unit

By pressing the UNIT key, the display can be switched over to the units enabled before in the menu.

Call up menu

In weighing mode press the UNIT key for 3 sec. The current setting is marked by the stability display (→).

With stability display (→ Unit enabled

Without stability display (→ Unit disabled

Enable/disable units

→ Press TARE

Use the navigation buttons (↓↑) to select more units and to enable/disable them as described before.

⇒ Press ON/OFF repeatedly or for 3 sec., the balance will return into weighing mode

How to change weighing units

⇒ To return to the previously enabled weighing units go to weighing mode by UNIT.

When switching-on the balance, the unit in which the balance has been switched off, will be displayed.

10.7.1 Freely programmable weighing unit

Call up menu

In weighing mode press the UNIT key for 3 sec. Use the navigation buttons (↓↑) to select „UNIT.U“. The current setting is marked by the stability display (→).

With stability display (→ Unit enabled

Without stability display (→ Unit disabled

if necessary enable units

→ Press TARE

Enter conversion factor

1. Press TARE and current setting will be displayed.
2. Use the navigation buttons to enter the desired conversion factor (see chapter 3.1.1 „Numeric input“).
3. Press ON/OFF repeatedly or for 3 sec., the balance will return into weighing mode

How to change weighing units

To return to the previously enabled weighing units go to weighing mode by UNIT.

• With a numeric input of the conversion factor, the position of the decimal dot can be changed, see chpt. 10.7.2
• For the freely programmable weighing unit, no unit symbol will appear in the display.

3 sec.

UN IT-Ü

UN IT-Ü

UN 16-0

SET

CONV.K

SET

CONV.K

10.7.2 Change position of decimal dot for freely programmable weighing unit The position of the decimal dot can only be changed by a numeric input of the conversion factor (see chpt. 9.7.1, step 2).

When the first cipher flashes, press PRINT repeatedly until the decimal dot flashes.
Select the desired position using the navigation keys ( ) . If no decimal dot shall be set, press MENU repeatedly until the display symbol appears.
→ Confirm with TARE.
⇒ Press ON/OFF repeatedly or for 3 sec., the balance will return into weighing mode

10.7.3 Input minimum weight for freely programmable weighing unit

Call up menu

In the menu item „CONV.K“ (see chpt. 9.7.1) use the navigation buttons to select (↓↑) „MIN.D“.
→ Press TARE and current setting will be displayed.
Use the navigation buttons to enter the desired minimum weight, see chapter 3.1.1 „Numeric input“.
⇒ Press ON/OFF repeatedly or for 3 sec., the balance will return into weighing mode

10.8 Change readability (1D/10D)

Call up menu

In weighing mode press the MENU button twice

Select menu item

⇒ Press the navigation buttons (↓ ↑) repeatedly until "TOOLS" is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „TARGET“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „PARAM.W“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „CHG.MIN“ is displayed.
→ Confirm with PRINT

Change readability from 1D to 10 D

1. Use the navigation buttons (↓↑) to select „10 D“.

1. Confirm with TARE. The current setting is marked by the stability display (→)

1. Press ON/OFF repeatedly or for 3 sec., the balance will return into weighing mode

In order to reset readability to 1D, repeat step 1 - 3 accordingly for 1D.

10.9 Display decimal dot as point or comma

Call up menu

→ In weighing mode press the MENU button twice

Select menu item

⇒ Press the navigation buttons (↓↑) repeatedly until „TOOLS“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „SYSTEM“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „POINT“ is displayed.

Selection point/comma

Acknowledge using PRINT, the current setting is displayed.
Select the desired adjustment using the navigation keys ( )

PERIOD: Decimal dot is displayed as a point

COMMA Decimal dot is displayed as a comma

→ Confirm with TARE. The current setting is marked by the stability display (→)

Return to weighing mode

⇒ Press ON/OFF repeatedly or for 3 sec.

11 Menu

To adapt the behaviour of the balance to your requirements, go to the menu. Usually the default setting of the menu is such that you do not need to make any changes. If you encounter special conditions of use, go to the menu in order to set your balance according to your individual requirements.

Menu structure:

Menu designation	Invoke menu	Explanation
Main Menu		Main menu
Calibration Menu		Adjustment
Zero / tare Menu		Set to zero/taring
Data Output Menu		Data output
Unit setting Menu		Weighing Units

11.1 Menu symbol

After invoking the menu, the menu symbol [💡] will appear. The arrangement depends on the navigation in the menu.

Symbol arrangement Explanation
Arrangement filled inside	Shows the current setting
Circular arch left/right	Higher or lower menu level selectable
Circular arch top / bottom Further selectable menu settings

11.2 Navigation in the menu

• How to invoke a menu, see chpt. 11
- Menu structure

graph LR
    A["SYSTEM"] --> B["POINT"]
    B --> C["PERIOD"]
    C --> D["OUTPUT"]
    B --> E["AUTO.OFF"]
    B --> F["BCLIT"]
    B --> G["RESET"]
    G --> H["COND.OUT"]
    style A fill:#cce5ff,stroke:#333
    style B fill:#66ccff,stroke:#333
    style C fill:#99ccff,stroke:#333
    style D fill:#ffcccc,stroke:#333
    style E fill:#cce5ff,stroke:#333
    style F fill:#cce5ff,stroke:#333
    style G fill:#cce5ff,stroke:#333
    style H fill:#cce5ff,stroke:#333

	Select and pass through menu items to bottom (↓).Select setting within one function
	Select and pass through menu items to top (↑).Select setting within one function
	After selecting the function in the display via the navigation buttons (↓↑), the change is invoked by pressing the TARE key.Confirm and store the setting momentarily appearing on the display by actuating the TARE key. The stability display → shows the present setting for the function.
	Selecting a menu item to the right (→).
	Selecting a menu item to the left.Leaving the functionPress shortly the ON/OFF key:Back to previous menu.Long actuation of ON/OFF key:Back to weighing mode.

11.3 Menu overview

+ See also the attached menu map

Menu Map Sheet

graph TD
    A["Weight display"] --> B["START General weighing mode"]
    B --> C["PORFING Pouring mode"]
    C --> D["MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN MIN INFER<br>    A --> E[STOP Zero tracking function"]
    E --> F["PATCH Application Function Mode"]
    F --> G["PCS Place counting"]
    G --> H["PERCENT Percentage weighting"]
    H --> I["FORMULA Formulation"]
    I --> J["TOOLS Other functions"]
    J --> K["TRIGHT Target mode"]
    K --> L["CHECK # Checkweighting mode"]
    L --> M["PERCENT Weighting parameters"]
    M --> N["SYSTEM System"]
    N --> O["POST Decimal point indication"]
    O --> P["POST Auto power-off"]
    P --> Q["START Start display"]
    Q --> R["Balance ID Password Window Output"]
    R --> S["SET Menu reset"]

graph TD
    A["Press or to search for the menu option."] --> B["Press to proceed to the next menu option."]
    B --> C["Press to confirm."]
    D["Press to return to the previous menu option."] --> E["The default settings (settings when the menu is reset)."]
    F["Weight display"] --> G["No documented"]
    G --> H["PRINT 3860."]
    H --> I["APP.PPI"]
    I --> J["Application output"]
    J --> K["RUTFPRI"]
    K --> L["Auto print function"]
    L --> M["L1 On L4 On-2d On-1d On-0.5 On OK"]
    M --> N["L2 L3 On L4 On-0.5 On OK"]
    N --> O["L4 L5 On OK"]
    O --> P["CCOPRI"]
    P --> Q["Continuous subtable factor"]
    Q --> R["PPRTF"]
    R --> S["OUTPUT"]
    S --> T["Output strong change function"]
    T --> U["CONVEI1 Communication settings"]
    U --> V["MODE 1"]
    V --> W["MODE 2"]
    W --> X["MODE 3"]
    X --> Y["MODE 4"]
    Y --> Z["MODE 5"]
    Z --> AA["HOFC 0"]
    AA --> AB["User specified settings"]
    AB --> AC["PS Box rate"]
    AC --> AD["1.300 [300"] 2.500["600"] 1.200["1200"] 2.500["2400"] 2.000["4500"] 3.500["6500"] 1.925["19.2 K"] 1.984 (38.4 K)]
    AD --> AE["POST"]
    AE --> AF["Skip hit"]
    AF --> AG["HANDSHK Handshoko"]
    AG --> AH["STOP Data format"]
    AH --> AI["SCLM Definiter"]
    AI --> AJ["CP CR LF CR+LF COMMA"]
    AJ --> AK["CPLIF CWM"]
    AK --> AL["WHI NOT documented WHI NOT-dwg"]

graph TD
    A["Weight display"] --> B["UNIT"]
    B --> C["3 sec."]
    C --> D["User specified units"]
    D --> E["Minimum indication"]
    E --> F["Conversion factors"]
    G["Other units cannot be selected in some cases due to target recommendations"] --> H["100% - 0"]
    H --> I["100% - kg"]
    I --> J["100% - kg^2"]
    J --> K["100% - c"]
    K --> L["100% - d"]
    L --> M["100% - e"]
    M --> N["100% - f"]
    N --> O["100% - g"]
    O --> P["100% - h"]
    P --> Q["100% - i"]
    Q --> R["100% - j"]
    R --> S["100% - k"]
    S --> T["100% - l"]
    T --> U["100% - m"]
    U --> V["100% - n"]
    V --> W["100% - o"]
    W --> X["100% - p"]
    X --> Y["100% - q"]
    Y --> Z["100% - r"]
    Z --> AA["100% - s"]
    AA --> AB["100% - t"]
    AB --> AC["100% - u"]
    AC --> AD["100% - v"]
    AD --> AE["100% - w"]
    AE --> AF["100% - x"]
    AF --> AG["100% - y"]
    AG --> AH["100% - z"]
    AH --> AI["100% - a"]
    AI --> AJ["100% - b"]
    AJ --> AK["100% - c"]
    AK --> AL["100% - d"]
    AL --> AM["100% - e"]
    AM --> AN["100% - f"]
    AN --> AO["100% - g"]
    AO --> AP["100% - h"]
    AP --> AQ["100% - i"]
    AQ --> AR["100% - j"]
    AR --> AS["100% - k"]
    AS --> AT["100% - l"]
    AT --> AU["100% - m"]
    AU --> AV["100% - n"]
    AV --> AW["100% - o"]
    AW --> AX["100% - v"]
    AX --> AY["100% - w"]
    AY --> AZ["100% - x"]
    AZ --> BA["100% - y"]
    BA --> BB["100% - z"]
    BB --> BC["100% - a"]
    BC --> BD["100% - b"]
    BD --> BE["100% - c"]
    BE --> BF["100% - d"]
    BF --> BG["100% - e"]
    BG --> BH["100% - f"]
    BH --> BI["100% - g"]
    BI --> BJ["100% - h"]
    BJ --> BK["100% - i"]
    BK --> BL["100% - j"]
    BL --> BM["100% - k"]
    BM --> BN["100% - l"]
    BN --> BO["100% - m"]
    BO --> BP["100% - v"]
    BP --> BQ["100% - w"]
    BQ --> BR["100% - x"]
    BR --> BS["100% - y"]
    BS --> BT["100% - z"]
    BT --> BU["100% - a"]
    BU --> BV["100% - b"]
    BV --> BW["100% - c"]
    BW --> BX["100% - d"]
    BX --> BY["100% - e"]
    BY --> BZ["100% - f"]
    BZ --> CA["100% - g"]
    CA --> CB["100% - h"]
    CB --> CC["100% - i"]
    CC --> CD["100% - j"]
    CD --> CE["100% - k"]
    CE --> CF["100% - l"]
    CF --> CG["100% - m"]
    CG --> CH["100% - v"]
    CH --> CI["100% - x"]
    CI --> CJ["100% - y"]
    CJ --> CK["100% - z"]

graph TD
    A["Weight display"] --> B["CAL"]
    B --> C["3 sec."]
    C --> D["CREATE"]
    D --> E["CAL"]
    E --> F["Calibration"]
    F --> G["ICRL"]
    G --> H["GLP output function"]
    H --> I["PLR"]
    I --> J["Not documented"]

11.4 Resetting the menu

This will return all the settings to factory setting. The reference value stored in previous use of piece counting or percentage conversion will also be cleared. Factory settings are marked by a “*” in the menu oversight.

Call up menu

In weighing mode press the MENU button twice

Select menu item

⇒ Press the navigation buttons (↓↑) repeatedly until „TOOLS“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „SYSTEM“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „RESET“ is displayed.

Resetting the menu

→ Confirm with TARE.
→ Confirm OK inquiry by pressing TARE, the password inquiry will be shown.
Use the navigation keys ( ) to enter the password see chpt. 3.1.1 „Numeric input“.

• Standard password (factory setting): „9999“.
• Change password see chpt. 11.5.1

→ Confirm with TARE. The balance will be reset to factory setting and automatically returns into the weighing mode.

11.5 Menu Lock

The menu setting operations can be locked so that the settings cannot be inadvertently changed. This menu lock is set with the following procedure.

Either

→ Switch-on power supply of the balance and wait until „OFF“ is displayed

or

→ Set balance into stand-by mode, see chpt. 10.2

Select menu item

1. Press MENU for 3 sec., the password inquiry appears.

2. Use the navigation keys (↓↑) to enter the password see chpt. 3.1.1 „Numeric input“.

3. Standard password (factory setting): „9999“.

4. Change password, see following chapter

5. If a wrong password is entered, „ERR N“ will appear. Restart with step 1.

6. Confirm with TARE. The menu lock is enabled, the symbol 🔒 is activated. This is followed by a reappearance of "oFF" or READY

⇒ In weighing mode the symbol 🔒 shows the menu lock.
If a menu item selection is attempted in locked status, the message "LOCKED" appears and the menu selection is not allowed. To deactivate menu disabled, follow the sequence of operations below:

Remove the menu lock

With indication "oFF" or „READY“, repeat step 1-3

11.5.1 Change password

Standard password (factory setting): „9999“

Call up menu

In weighing mode press the MENU button twice

Select menu item

⇒ Press the navigation buttons (↓ ↑) repeatedly until „TOOLS“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „SYSTEM“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „PASS.WRD“ is displayed.

PASS.WRD

Change password

→ Confirm with TARE.
⇒ Use the navigation keys (↓↑) to enter the currently set password see chpt. 3.1.1 „Numeric input“.
⇒ Confirm with TARE. When „OK“ appears, the password input has been correct, if „ERR N“ appears, it was wrong. In this case repeat the input with the correct password.

P-0000

P-9999

OK

P-1234

OK?

SET

PASS.WRD

⇒ Use the navigation keys (↓↑) to enter the new password „Numeric input“ see chpt. 3.1.1.

→ Confirm with TARE.

→ Confirm again with TARE (or discard by ON/OFF).

Return to weighing mode

⇒ Press ON/OFF repeatedly or for 3 sec.

0.0000

11.6 Log menu settings

When an optional printer is connected, a list of the current menu settings can be printed out.

+ Data output, see chpt. 16

Call up menu

In weighing mode press the MENU button twice

Select menu item

⇒ Press the navigation buttons (↓↑) repeatedly until „TOOLS“ is displayed.

→ Confirm with PRINT

⇒ Press the navigation buttons (↓ ↑) repeatedly until „SYSTEM“ is displayed.

→ Confirm with PRINT

⇒ Press the navigation buttons (↓ ↑) repeatedly until „COND.OUT“ is displayed.

Activate menu item

→ Confirm with TARE.

→ Confirm OK inquiry using TARE.

→ Confirm with TARE. The printout is started, the symbol □ is displayed.

The balance returns automatically into weighing mode.

12 Zero / tare menu (zeroing and taring functions)

Selectable functions:

1. Zero tracking function

+ see chpt 12.1

This function is used to correct automatically small weight variations which appear directly after switching-on.

In the event that small quantities are removed or added to the material to be weighed, incorrect weighing results can be displayed due to the "stability compensation" in the balance. (e.g. slow flow of liquids from a container placed on the balance, evaporating processes). When apportioning involves small variations of weight, it is advisable to switch off this function.

2. Auto zero function

+ see chpt 12.2

This function is used to correct automatically small weight variations which appear after a measurement (e.g. soiled weighing plate) after the stability display.

3. Auto tare function

+ see chpt 12.3

After data output an automatic taring is carried out

4. Zero / tare timing change function

+ see chpt 12.4

Selectable if the balance tares or gets set to zero before or after indication of the stability mark.

12.1 Zero tracking function

The zero tracking function „A.ZERO“ is turned-on by factory.

1. Check menu setting

Zero tracking symbol Zero tracking function
is displayed	switched on
is not displayed	switched off

2. Call function

In weighing mode press TARE for 3 sec. and if necessary press repeatedly the navigation buttons (↓↑). until „Z.TRC“ is displayed. The current setting is marked by the stability display (→).

With stability display (→) Function turned on Without stability display (→) Function switched off

3. Enable/disable function

→ Press TARE

4. Return to weighing mode

⇒ Press ON/OFF repeatedly or for 3 sec.

12.2 Auto zero function

i The auto zero function is not available when formula mode is enabled (see chapter 14.3).

1. Call up menu

→ Press TARE for 3 sec. in weighing mode.

" Z.TRČ

2. Select function

⇒ Press the navigation buttons (↓↑) repeatedly until „A.ZERO“ is displayed. The current setting is marked by the stability display (→).

A.ZERO

Further steps depend on the desired setting:

Stability di	Function	set/update	cancel
	ON		Press PRINT and continue with step 3.	Press TARE and continue with step 4.
	off		Press TARE and continue with step 3.	continue with step 4.

3. Define zero range

→ Press TARE
Use the navigation keys ( ) to enter the zero range see chpt. 3.1.1 „Numeric input“.

4. Return to weighing mode

⇒ Press ON/OFF repeatedly or for 3 sec.

When entering the zero range observe the currently set weighing unit. If the weighing unit is changed at a later moment, the zero range must be adapted to the new weighing unit (step 3.).

Upper limit zero range: 99 d (in the displayed weighing unit) Lower limit zero range: 1d (in the displayed weighing unit)

Example for a balance d = 0.0001 g

Unit	Lower limit	Upper limit
g	0.0001 g	0.0099 g
ct	0.001 ct	0.099 ct

12.3 Auto Tare function

1. Call up menu

⇒ Press TARE for 3 sec. in weighing mode.

Z.TRC

2. Select function

⇒ Press the navigation buttons (↓↑) repeatedly until „A.TARE“ is displayed. The current setting is marked by the stability display (→).

With stability display (→)

Function turned on

Without stability display (→ Function switched off

A.TARE

A.TARE

SET

A.TARE

0.0000

3. Enable/disable function

→ Press TARE

4. Return to weighing mode

⇒ Press ON/OFF repeatedly or for 3 sec.

12.4 Zero / tare timing change function

The zero / tare timing change function can be switched-on, when the „Auto zero“ and the „Auto tare“ function are enabled.

1. Call up menu

→ Press TARE for 3 sec. in weighing mode.

↓

" Z.TRČ

2. Select function

⇒ Press the navigation buttons (↓↑) repeatedly until „TARE.F“ is displayed.
Confirm with PRINT. The current setting is marked by the stability display (→)

With stability display ( )

Function turned on

Without stability display (→ Function switched off

* 5000

5000

3. Enable/disable function

→ Press TARE

SET

4. Return to weighing mode

⇒ Press ON/OFF repeatedly or for 3 sec.

0.0000 g

13 Settings for Stability and Response

Exists the possibility to tune the stability of the display and the degree of reaction of the balance to the requirements of certain applications or the environmental conditions.

Most measurements can be carried out using default settings, that is, standard mode. In standard weighing mode, stability and reaction have the same priority. For certain applications such as e.g. dosage do use the dosing mode (pouring mode). In dosing mode the reaction degree has the higher priority.

Beside the selection standard / dosing mode the stability of the display and the reaction degree of the balance can additionally adapted in the menu.

Please note that data processing for greater stability generally slows the response and processing for higher response reduces stability.

13.1 Stability and reaction settings via „Easy Setting display“ (without invoking menu)

☐ In weighing mode press MENU shortly. The easy setting display [R] flashes.
☐ When the display is flashing, set stability or reaction via UNIT or PRINT as described in the following.

Priority on reaction

Every time the button is hit, reaction will increase

Easy setting display
Operation

Priority on stability

Every time the button is hit, stability will increase

The easy setting display flashes for a short time. Inputs are only possible within this time. Using ON/OFF the flashing Easy setting display can be switched off.

13.2 Selection weighing / dosing mode

Call-up weighing mode:

This is the default setting. Use this mode, when neither stability nor reaction time must be increased or reduced.

Call up menu

In weighing mode press the MENU button twice

Select menu item

⇒ Press the navigation buttons (↓ ↑) repeatedly until „STAND“ is displayed.

→ Confirm with TARE. The balance returns automatically into weighing mode.

Call-up dosing mode:

Use this function if you wish to increase display speed, e.g. during apportioning. However, please note that the balance is very susceptible to ambience conditions.

Call up menu

→ In weighing mode press the MENU button twice

Select menu item

⇒ Press the navigation buttons (↓ ↑) repeatedly until „POURING“ is displayed.

Confirm with TARE. From here on the balance is in dosing mode (pouring mode), symbolised by the indicator

13.3 Standstill width

If the stability display lights up (→), the weighing result will be stable within the range indicated by the standstill width.

Set range for stability determination:

Call up menu

In weighing mode press the MENU button twice

Select menu item

⇒ Press the navigation buttons (↓ ↑) repeatedly until „TOOLS“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „PARAMW“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „BAND“ is displayed.

BAND

Set range

⇒ Acknowledge using PRINT, the current setting is displayed.
⇒ Use the navigation buttons (↓↑) to select the desired setting (0.5d, 1d, 10d, 50d, 100d, 1000d can be selected).

graph TD
    A["0.5D"] --> B["Stability display (→very quiet environment)"]
    C["1000d"] --> D["Stability display (→busy environment)"]
    B <--> D

→ Confirm with TARE. The current setting is marked by the stability display (→)

Return to weighing mode

⇒ Press ON/OFF repeatedly or for 3 sec.

Set reaction time:

Call up menu

→ In weighing mode press the MENU button twice

Select menu item

⇒ Press the navigation buttons (↓ ↑) repeatedly until „TOOLS“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „PARAMW“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „STB.Mk“ is displayed.

STB.MK

Set reaction time

→ Confirm with PRINT. The current setting is marked by the stability display (→).

with (→)

Stability display appears faster, but with less exactness.

without ( ) Default

Confirm with TARE. The current setting is marked by the stability display (→)

FAST

FAST

SET

FAST

0.0000 g

Return to weighing mode

⇒ Press ON/OFF repeatedly or for 3 sec.

14 Application Functions

• The application functions can be combined with the check weighing or target function (see chpt. 14).
• The balance starts in the mode, in which it has been switched off.
• For switching over between application and weighing mode, press MENU for 3 sec.

14.1 Parts counting

With parts counting you can either count parts into a container or remove parts from a container. To count a greater number of parts the average weight per part has to be determined with a small quantity (reference quantity). The larger the reference quantity, the higher the counting exactness. High reference must be selected for small parts or parts with considerably different sizes.

1. Enable function and set reference

Call up menu

In weighing mode press the MENU button twice

Select piece counting mode

⇒ Press the navigation buttons (↓↑) repeatedly until „APL.FUNC“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „PCS“ is displayed.
⇒ Press TARE. The display shows the currently set memory location.

Enter memory location for reference

⇒ The balance offers the possibility to store five different piece weights at the same time.
⇒ Press the navigation buttons (↓↑) repeatedly until the desired memory location ■ ■ ■ ▲ played, then press TARE.

Display, if no piece weight is stored

Display, if a piece weight is stored

RPL.FUNC

PCS ^® PCS

SET

↓

* SAMPLE PCS

SET

PCS o

PCS

Set reference

⇒ Place an empty container on the balance and tare it by pressing TARE.
→ Press MENU twice.
⇒ Press the navigation buttons (↓↑) repeatedly until the desired reference quantity is displayed (possible reference quantities 5, 10, 20, 50, 100).

Use MENU to scroll forward.

Use UNIT to scroll backward.

⇒ Fill number of pieces into the container according to the selected reference quantity.
→ Wait for the stability display (→), then confirm by pressing TARE. The balance determines the average piece weight.

From here on the appliance is in piece counting mode and counts all pieces which are on the weighing plate.

2. Switching over between piece counting and weighing mode

3. Count the items

Call-up the piece weight stored in piece counting mode

⇒ Every time UNIT is pressed (approx. for 3 sec.), the next memory location [1]2346led up.

If under the indicated memory location no reference is stored, [- - - ] will be displayed.

⇒ Place an empty container on the balance and tare it by pressing TARE.
⇒ Fill weighing goods into the container and read the piece quantity.

⇒ Or count more pieces

or

The menu item to change the stored reference is called up, the currently set reference quantity is displayed.

+ see „4. Change or add piece weight“

The stored piece weight is displayed in grams, marked by the symbol *. Using PRINT the reference weight (UW= Unit weight) can be edited when a printer is connected.

e.g.: UW = 1.0001

To go back to piece counting display press UNIT anew.

Switching over between piece counting and weighing mode

4. Change or add piece weight

In piece counting mode call-up the desired memory location

⇒ Every time UNIT is pressed (approx. for 3 sec.), the next memory location [1]2s4led up.

Change or add piece weight

⇒ Place an empty container on the balance and tare it by pressing TARE.
⇒ Press MENU twice, the currently set reference quantity is displayed.
⇒ Press the navigation buttons (↓↑) repeatedly until the desired reference quantity is displayed (possible reference quantities 5, 10, 20, 50, 100).

Use MENU to scroll forward.

Use UNIT to scroll backward.

⇒ Fill number of pieces into the container according to the selected reference quantity.
Wait for the stability display () , then confirm by pressing TARE.

The balance is now in parts counting mode and counts all units on the weighing plate.

14.2 Percent determination

Percent weighing allows to display weight in percent, in relation to a reference weight.

The balance offers two possibilities:

1. Reference = 100 %
2. Reference = defined by user

Call up menu

In weighing mode press the MENU button twice

Select percent weighing mode

⇒ Press the navigation buttons (↓ ↑) repeatedly until „APL.FUNC“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „PERCENT“ is displayed.

APL.FUNC

PERCENT %

Further steps:

• Reference weight = 100 %, see chpt. 14.2.1
• Reference weight = XX %, see chpt. 14.2.2

14.2.1 Reference weight = 100 %

Select percent weighing mode, see chpt. 14.2
→ Press TARE.
⇒ If necessary, press the navigation buttons (↓↑) repeatedly until „SAMPLE“ is displayed.
→ Press TARE.

Display, if no reference weight is stored

Display, if a reference weight is stored

Set reference

⇒ If necessary, place an empty container on the balance and tare it by pressing TARE.
→ Press MENU twice.

Put a reference weight which corresponds to 100 %.

(Minimum weight: Readability d x 100)

→ Wait for the stability display (→), then confirm by pressing TARE.

From here on the weight of the sample is displayed in percentage in terms of the reference weight, see chpt. 13.2.3.

14.2.2 User-defined reference

→ Select percent weighing mode, see chpt. 13.2
→ Press TARE.
⇒ If necessary, press the navigation buttons (↓↑) repeatedly until „OPTION“ is displayed.
→ Press TARE.

Display, if no reference is stored

Display, if a reference is stored

Set reference

⇒ If necessary, place an empty container on the balance and tare it by pressing TARE.
→ Press MENU twice.
⇒ Press PRINT and current setting will be displayed. Enter a percentage of your choice via the navigation buttons, see chpt. 3.1.1 „Numeric input“
⇒ Put a reference weight which corresponds to the entered percent value.
Wait for the stability display () , then confirm by pressing TARE.

The display symbol [ ^95] characterises the percentage determination with user-defined reference value.

From here on the weight of the sample is displayed in percentage in terms of the reference weight, see chpt. 14.2.3.

14.2.3 Percent determination

In weighing mode press MENU for 3 sec., the currently set percentage determination mode is displayed.
→ Place an empty container on the balance and tare it by pressing TARE.
Place goods to be weighed on balance. The weight of the sample is displayed in percentage in terms of the reference weight.
⇒ Either carry out more percent weighing

or

The menu item to change the stored reference appears.

+ see chpt. 14.2.2 / 14.2.3 „Set reference“

The stored reference weight is displayed in grams, marked by the symbol *. Use PRINT to edit the weight value of the reference value when a printer is connected.

Back to percent display, press UNIT anew.

Switching over between percentage determination and weighing mode

14.3 Formula mode

The formula function allows to add on various components of a mixture. For check purpose, the weight of all components (CMP001, (CMP002 etc.), as well as the total weight (TOTAL) can be printed out. The balance works with a separated memory for the weight of the weighing container and of the formula components.

In formula mode the „Auto zero“ function is not active (see chpt. 12.2).

1. Connect printer (see chpt. 15 „Data output“)
2. Call up menu

In weighing mode press the MENU button twice

1. Select formula mode

Press the navigation buttons ( ) repeatedly until „APL.FUNC“ is displayed.

Confirm with PRINT

Press the navigation buttons ( ) repeatedly until „FORMULA“ is displayed. The formula symbol [ ] appears.

Press TARE. The indicator READY is displayed, from here on the balance is in formula mode.

Enable the edition „component no.“(see chpt. 14.3.1) and „Total“ (see chpt. 14.3.2).

1. Weighing components

☐ If necessary, place an empty container on the balance and tare it by pressing TARE.

Press PRINT, the symbol READY goes out.

When the GLP function (see chpt. 8.3) is activated, the headline will be printed.

Weigh first component.

Press PRINT.

When standstill control (→) is completed, the weighing value of the first component (CMP001) is issued to the optional printer. The displayed value is added into the total adding memory. This is followed by the automatic taring, the symbol [NET] displayed.

APL.FUNC

FORMULA

SET

-0.0000g

^* 0.3250g

+ 0.0000 g

→ Weigh further components in the same way

i During formulation weighing can be displayed at any time by pressing MENU (for 3 sec.).

5. Complete formulation process

⇒ Press ON/OFF. When the symbol [G] is displayed, the total weight (TOTAL) of all components is displayed and edited to the printer.
When the symbol READY is displayed, the balance is ready for further measurements.

6. Return to weighing mode

→ Press ON/OFF for 3 sec.

Printout example „GLP ON“ (KERN YKB-01N):

14.3.1 Enable edition „component no.“

Select formula mode, see chpt. 14.3
When the symbol READY appears, press the MENU button twice.
⇒ Press the navigation buttons (↓ ↑) repeatedly until „ELM.NUM“ is displayed.
→ Confirm with PRINT. The current setting is marked by the stability display (→).

with (→)

Edition „component no.“ (e.g. CMP001)

without (→ No edition „component no.“)

→ Change using TARE.

Back to formula mode

→ Press ON/OFF repeatedly or for 3 sec.

Printout examples (KERN YKB-01N):

Function ELM.NUM enabled

FORMULATION MODE

CMP001= 0.5361 g

CMP002= 0.5422 g

CMP003= 0.4488 g

TOTAL= 1.5271 g

Function ELM.NUM disabled

FORMULATION MODE

0.5361 g

0.5422 g

0.4488 g

TOTAL= 1.5271 g

14.3.2 Enable issue „TOTAL“

Select formula mode, see chpt. 14.3
When the symbol READY appears, press the MENU button twice.
⇒ Press the navigation buttons (↓ ↑) repeatedly until „TOTAL“ is displayed.
→ Confirm with PRINT. The current setting is marked by the stability display (→).

with (→) Issue „TOTAL“

without (→ No issue „TOTAL“

→ Change using TARE.

Back to formula mode

→ Press ON/OFF repeatedly or for 3 sec.

Printout examples (KERN YKB-01N):

Function TOTAL enabled

FORMULATION MODE

CMP001= 0.5361 g

CMP002= 0.5422 g

CMP003= 0.4488 g

TOTAL 1.5271 g

Function TOTAL disabled

FORMULATION MODE

CMP001= 0.5361 g

CMP002= 0.5422 g

CMP003= 0.4488 g

15 Check weighing and target mode (check and target weighing)

• The check weighing or target mode can be applied for the application functions (see chpt. 14).
• The balance starts in the mode, in which it has been switched off.

15.1 Check weighing

In many cases not the nominal value of the weighed goods is the decisive parameter, but the deviation from this nominal value. Such applications are for example the weight check of equivalent packages or the process check of parts in a fabrication process.

The indicators HI, OK or LO in the display show, where the weighed goods are located within the tolerance range.

These indicators are only functioning in check weighing or in target mode, otherwise they cannot be seen.

The indicators provide the following information

Condition Grading Indicator
OVR.RNG < sample weight	Beyond tolerance limit	No indicator
HI.LIM < sample weight ≤ OVR.RNG	Upper tolerance limit	HI
LO.LIM ≤ sample weight ≤ HI.LM	Inside tolerance range	OK
UND.RG ≤ sample weight < LO.LIM	Lower tolerance limit	LO
Sample weight < UND.RG	Beyond tolerance limit	No indicator

0. Call up menu

In weighing mode press the MENU button twice

1. Select function

⇒ Press the navigation buttons (↓↑) repeatedly until "TOOLS" is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓↑) repeatedly until „CHECK.W“ is displayed. The current setting is marked by the stability display (→).

Further steps depend on the desired setting:

Stability display (→)	Function	set/update	cancel
ves	ON	→	Press PRINT and continue with step 3.	Press TARE and continue with step 4.
no	off	→	Press TARE and continue with step 3.	continue with step 4.

2. Set limit values

graph TD
    A["HI"] --> B["OK"]
    B --> C["LO"]

When entering the limit values ensure that the values match logically one with another, i.e. the lower limit value must not be greater than the upper one.

If not considered, the balance will adapt the limit values automatically.

① Press the navigation buttons (↓↑) repeatedly until „HI.LIM“ is displayed.

→ Press TARE. The current setting will be displayed.
⇒ Use the navigation buttons (↓↑) to enter the desired value, see chpt. 3.1.1 „Numeric input“.

→ Confirm with TARE.

② Press the navigation buttons (↓↑) repeatedly until „LO.LIM“ is displayed.

→ Press TARE. The current setting will be displayed.
⇒ Use the navigation buttons (↓↑) to enter the desired value, see chpt. 3.1.1 „Numeric input“.

→ Confirm with TARE.

③ Press the navigation buttons (↓↑) repeatedly until „UND.RNG“ is displayed.

→ Press TARE. The current setting will be displayed.
⇒ Use the navigation buttons (↓↑) to enter the desired value, see chpt. 3.1.1 „Numeric input“.

→ Confirm with TARE.

④ Press the navigation buttons (↓↑) repeatedly until „OVR.RNG“ is displayed.

→ Press TARE. The current setting will be displayed.
⇒ Use the navigation buttons (↓↑) to enter the desired value, see chpt. 3.1.1 „Numeric input“.

→ Confirm with TARE.

3. Return to weighing mode

→ Press ON/OFF repeatedly or for 3 sec.

4. Start tolerance control

If necessary, place an empty container on the balance and tare it by pressing TARE.

Place weighed goods and wait until the indicator HI, OK or LO appears. With the help of the indicator check if the weighed goods are under, inside or over the default tolerance

Example of entry:

1 HI.LIM	7.0000 g
2 LO.LIM	6.0000 g
3 UND.RNG	5.0000 g
4 OVR.RNG	8.0000 g

Sample weight < UND.RG(sample weight < 5.0000g)		No indicator is displayed
UND.RG ≤ sample weight < LO.LIM(sample weight 5.0000g - 5.9999g)		LO is displayed
LO.LIM ≤ sample weight ≤ HI.LM(sample weight 6.0000g - 7.000g)		OK is displayed
HI.LIM < sample weight ≤ OVR.RNG(sample weight 7.0001g - 8.0000g)		HI is displayed
Sample weight >OVR.RNG(sample weight >8.0000 g)		No indicator is displayed

15.2 Target mode

This mode e.g. is used for weighing constant liquid quantities or for assessment of missing quantities or excess quantities.

The target value is the numeric value which corresponds to the nominal quantity of the used unit. Beside the target value a tolerance value is entered. This is a numerical value which is plus/minus over or under the acceptable target value.

The indicators HI, OK or LO advise, when the target value is reached.

These indicators are only functioning in check weighing or in target mode, otherwise they cannot be seen.

The indicators provide the following information:

Condition Grading Indicator
Weight more than the nominal weight and above the upper tolerance	Great difference to target value	HI flashes slowly
	Small difference to target value	HI flashes fast
Weight within tolerance (target value ± tolerance)	Target value accepted	OK
Weight less than nominal weight and below the lower tolerance	Small difference to target value	LO flashes fast
	Great difference to target value	LO flashes fast

1. Call up menu

In weighing mode press the MENU button twice

2. Select function

⇒ Press the navigation buttons (↓↑) repeatedly until „TOOLS“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓↑) repeatedly until „TARGT“ is displayed. The current setting is marked by the stability display (→).

Further steps depend on the desired setting:

Stability display(→)	Function	set/update	cancel
ves	ON		Press PRINT andcontinue with step 3.	Press TARE andcontinue with step 4.
no	off		Press TARE andcontinue with step 3.	continue with step 4.

3. Set target value and tolerance

⇒ Press the navigation buttons (↓↑) repeatedly until the display to enter the target value „TG.VAL“ appears.
→ Press TARE. The current setting will be displayed.
⇒ Use the navigation buttons (↓↑) to enter the desired value, see chpt. 3.1.1 „Numeric input“.

→ Confirm with TARE.
⇒ Press the navigation buttons (↓↑) repeatedly until the display to enter the target value „LM.VAL“ appears.
→ Press TARE. The current setting will be displayed.
Use the navigation buttons (↓↑) to enter the desired value, see chpt. 3.1.1 „Numeric input“.

→ Confirm with TARE.

4. Return to weighing mode

→ Press ON/OFF repeatedly or for 3 sec.

5. Start tolerance control

If necessary, place an empty container on the balance and tare it by pressing TARE.

Place weighed goods and wait until the indicator HI, OK or LO appears. With the help of the indicator check if the weighed goods are under, inside or over the default tolerance

Example of entry: TG.VAL 100.0000 g

LM.VAL 10.0000 g

Weight less than nominal weight and below the lower tolerance		LOflashes slowly
		LOflashes fast
Weight within tolerance [target value ± tolerance](90.0000g – 110.000g)		OK
Weight more than the nominal weight and above the upper tolerance		HIflashes fast
		HIflashes slowly

16 Data output

The appliance interface allows a bi-directional data exchange from the balance to external devices. This data exchange is asynchronous using ASCII - Code.

The following conditions must be met to provide successful communication between the weighing balance and the printer.

- Use a suitable cable to connect the weighing balance to the interface of the printer/PC.

Faultless operation requires an adequate KERN interface cable (optional).

- Communication parameters (baud rate, bits and parity) of balance and printer must match.

16.1 Pin connection

Due to connection of an optional KERN interface cable the balance is equipped with a RS232C interface.

Balance (RS-232C)
3 TXD
2 RXD
6 DSR
5 SG
4 DTR
7 CTS
8 RTS

16.2 Issue functions

16.2.1 Automatic data output / Auto Print function

Data output ensues automatically without pressing PRINT, as soon as the respective output condition is fulfilled. This is defined by the menu setting.

Tab. 1:

	stable / positive	stable / negative	Stabilisation / zero display	Check weighing
LD. .	√	--	-		Output for stable and positive weighing value
LD.UL.	√ √		--		Output for stable and positive or negative weighing value.
LD. .Z	√	-	√	-	Output for stable and positive weighing value. New output only after zero display and stabilisation
LD.UL.Z	√ √ √			-	Output for stable and positive or negative weighing value. New output only after zero display and stabilisation.
LD.OK .	--	-		√	If the Auto Print function is connected to the check weighing function, data of stable weighing values are output with indicator display OK.

Enable Auto Print function:

1. Invoke Data Output menu

⇒ Press PRINT for 3 sec. in weighing mode.

2. Select function

⇒ Press the navigation buttons (↓ ↑) repeatedly until „APL.PRN“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓↑) repeatedly until „AUTO.PRN“ is displayed. The current setting is marked by the stability display (→).

Further steps depend on the desired setting:

Stability display (→)	Function
yesAUTO.PRN	ON
noAUTO.PRN	off

set/update	cancel
Press PRINT and continue with step 3.	Press TARE and continue with step 5.
Press TARE and continue with step 3.	continue with step 5.

3. Set output condition

⇒ Use the navigation buttons (↓↑) to select the desired mode, e.g. Mode 3 (details see Tab. 1)
→ Confirm with TARE

4. If necessary, set condition for zero display

→ Press PRINT
⇒ Select the desired adjustment using the navigation keys (↓↑)

RET.0 An other output when the display goes back to zero.

RET.50% An other output when the display goes back to 50% of the previous weighing value.

With selection „RET.0“

→ Confirm with TARE

5. Return to weighing mode

⇒ Press ON/OFF repeatedly or for 3 s. From here on the Auto Print function is active, the indicator AP displayed.

5. Place goods to be weighed on balance

⇒ If necessary, place an empty container on the balance and tare it by pressing TARE.
Place weighed goods and wait until the stability display () appears. The weighing value is issued automatically.

6. Remove the weighed good.

Wait until the stability () / zero display appears. The weighing value is issued automatically.

16.2.2 Continuous Output function (only models ABS-N)

1. Invoke Data Output menu

→ Press PRINT for 3 sec. in weighing mode.

2. Select function

⇒ Press the navigation buttons (↓↑) repeatedly until „APL.PRN“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓↑) repeatedly until „SEQ.PRN“ is displayed. The current setting is marked by the stability display (→).

with (→ on

without (→ off

→ Change using TARE.

3. Set start/end of the continuous issue manually or automatically

→ Press PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „MANU“ is displayed. The current setting is marked by the stability display (→).

with (→)

The continuous data output starts after pressing of PRINT and ends by pressing ON-OFF

without (→)

The continuous data output starts automatically

→ Change using TARE

SEQ.PRN

SEQ.PRN

4. Connect filter

⇒ Press the navigation buttons (↓ ↑) repeatedly until „NO.FIL“ is displayed. The current setting is marked by the stability display (→).

with ( ) Weighing value is filtered

without (→ Weighing value is not filtered

→ Change using TARE

5. Return to weighing mode

→ Press ON/OFF repeatedly or for 3 s.

With activated menu setting „MANU“ (see step 3, with →) the indicator will appear.

With deactivated menu setting „MANU“ (see step 3, without → starts the continuous data output automatically, step 7 is not applied.

6. Tare weighing container

If necessary, place an empty container on the balance and tare it by pressing TARE.

Place weighed goods and wait until the stability display () appears. The weighing value is issued automatically.

1. Press PRINT (only with menu setting „MANU ON“)

⇒ The continuous data output starts, the indicator READY goes out.

1. Place goods to be weighed on balance

⇒ Every display change is continuously issued, (data issue interval approx. 100 msec).

i Interrupt continuous data output ON-OFF = interrupt PRINT = restart

16.2.3 Output Timing Change function

This function allows to select if the data output shall ensue with stable or instable weighing value after pressing PRINT.

1. Invoke Data Output menu

→ Press PRINT for 3 sec. in weighing mode.

2. Select function

⇒ Press the navigation buttons (↓ ↑) repeatedly until „APL.PRN“ is displayed.
→ Confirm with PRINT
⇒ Press the navigation buttons (↓↑) repeatedly until „PRINT.F“ is displayed.
→ Confirm with PRINT. The current setting is marked by the stability display (→)

with (→)

Instantaneous data output without waiting until the stability display appears

without (→ Data output only after stability display

→ Change using TARE.

3. Return to weighing mode

→ Press ON/OFF repeatedly or for 3 s.

16.2.4 GLP Output function / balance identification number

With the GLP Output function the printouts of weighing results are completed with a bottom row and a head line. Contents of the headline and bottom row see following printout example.

• Enable GLP Output function, see chpt. 8.3
• Enter balance identification number, see chpt. 8.4

Printout example:

KERN & Sohn GmbH

TYPE ABJ 220-4NM

SN WBIIAB000I

ID 1234

200.0000g

-SIGNATURE-

Company

Model

Serial no.

Balance identification no. (see chpt. 8.4)

Weighing result

prepared by

In the ABS/ABJ_N series it is not possible to state date and time.

16.3 Communication parameters

By calling-up a standard setting „MODE 1 - MODE 5“ all communication parameters are already preset (see chpt. 16.3.1).

The subsequent standard setting must be selected according to the printer (details see the following table).

In the menu item „MODE U“ all parameters can be set defined by user (see chpt. 16.3.2).

	Standard setting 1	Standard setting 2	Standard setting 3	Standard setting 4	Standard setting 5	User-defined settings	Setting for KERN – YKB-01N
Menu selection	MODE 1	MODE 2	MODE 3	MODE 4	MODE 5	MODE U	MODE U
Manufacturer	Shimadzu (Standard)	Shimadzu *	Mettler Sartorius A-D -		-
Baud Rate	1200	1200	2400	1200	2400	user-defined	1200
Parity	None (8)	None (8)	Even (7)	Odd (7)	Even (7)	user-defined	None (8)
Stop bit 1	2 2 2					user-defined	1
Hand-shake	Hardware	Hardware	off	Hardware	off	user-defined	off
Data format	Shimadzu Standard	Shimadzu Standard	Mettler Standard	Sartorius Standard	A-D Standard	user-defined	DF.1
Separator	C/R	C/R	C/R + L/F	C/R + L/F	C/R + L/F	user-defined	C/R

*only if the balance can send a feedback to the PC (without error: OK [C/R], at error NG [C/R]).

16.3.1 Selection of a standard setting „MODE 1 - MODE 5“

1. Invoke Data Output menu

→ Press PRINT for 3 sec. in weighing mode.

2. Select function

→ Press the navigation buttons (↓ ↑) repeatedly until „COMM.SET“ is displayed.
→ Confirm with PRINT
→ Press the navigation buttons (↓↑) repeatedly until the desired mode „MODE 1 - MODE 5“ is displayed. The current setting is marked by the stability display (→).

with (→ on

without (→ off

→ Change using TARE.

3 sec.

COMM.SET

MODE.2

MODE.2

MODE.2

SET

MODE.2

3. Return to weighing mode

→ Press ON/OFF repeatedly or for 3 s.

16.3.2 User-defined settings „MODE U“ / setting for KERN -YKB-01N

In the menu item „MODE U“ every communication parameter can be set individually.

1. Invoke Data Output menu

→ Press PRINT for 3 sec. in weighing mode.

2. Select function

⇒ Press the navigation buttons (↓ ↑) repeatedly until „COMM.SET“ is displayed.
→ Confirm with PRINT
→ Press the navigation buttons (↓↑) repeatedly until the desired mode „MODE 1 - MODE 5“ is displayed. The current setting is marked by the stability display (→).

with (→ on

without (→ off

→ Change using TARE.

3. Set the communication speed (Baud rate)

→ Press PRINT
⇒ Press the navigation buttons (↓ ↑) repeatedly until „START“ is displayed.
⇒ Press PRINT. The current setting is marked by the stability display (→).
⇒ Press the navigation buttons (↓↑) repeatedly until the desired setting (e.g. 9600 bps) appears.
→ Press TARE.

BPS

B.9600

SET

Selectable settings:

Display	B0.300	B0.600	B0.1200	B0.2400	B0.4800	B0.9600 B	19.2k B.38.4k
Baud rate	300bps	600bps	1200bps	2400bps	4800bps	9600bps	19.2k bps	38.4k bps

4. Set parity

→ Use ON/OFF to return to menu
⇒ Press the navigation buttons (↓ ↑) repeatedly until „PARITY“ is displayed.
⇒ Press PRINT. The current setting is marked by the stability display (→).
⇒ Press the navigation buttons (↓↑) repeatedly until the desired setting (e.g. P.NONE) appears.
→ Press TARE.

PARITY

SET

P.NONE

Selectable settings:

Display	P.NONE	P.ODD	P.EVEN
Parity	Small parity, 8 bit	Odd parity, 7 bit	Straight parity, 7 bit

5. Stop bit settings

→ Use ON/OFF to return to menu
⇒ Press the navigation buttons (↓ ↑) repeatedly until „STOP“ is displayed.
⇒ Press PRINT. The current setting is marked by the stability display (→)
⇒ Press the navigation buttons (↓↑) repeatedly until the desired setting (e.g. S. 1) appears.
→ Press TARE.

STOP

5.1

SET

5.1

Selectable settings:

Display S.	1 S. 2
Stop bit 1 bit 2 bit

6. Set handshake

→ Use ON/OFF to return to menu
⇒ Press the navigation buttons (↓ ↑) repeatedly until „HAND.SHK“ is displayed.
→ Press PRINT. The current setting is marked by the stability display (→)
⇒ Press the navigation buttons (↓↑) repeatedly until the desired setting (e.g. HS.HW) appears.
→ Press TARE.

HAND.SHK

HS.HW

SET

HS.HW

图

Selectable settings:

Display	HS.OFF	HS.HW	HS.SW	HS.TiM
Hand-shake	No handshake	Hardware handshake	Software handshake	Timer handshake

7. Set data format

→ Use ON/OFF to return to menu
⇒ Press the navigation buttons (↓ ↑) repeatedly until „D.FORM“ is displayed.
⇒ Press PRINT. The current setting is marked by the stability display (→).
⇒ Press the navigation buttons (↓↑) repeatedly until the desired setting (e.g. DF.1) appears.
→ Press TARE.

D.FORM

DF. 1

#

SET

DF. 1

N

Selectable settings (details see chpt. 15.4):

Display	DF.1	DF.2	DF.3	DF.4	DF.FREE
Data format	Shimadzu Standard	Shimadzu Standard	Mettler Standard	Sartorius Standard	Options:Head byte 1 -17, Data length 8 -2

8. Set separator

→ Use ON/OFF to return to menu
⇒ Press the navigation buttons (↓ ↑) repeatedly until „DELIM“ is displayed.
⇒ Press PRINT. The current setting is marked by the stability display (→).
⇒ Press the navigation buttons (↓↑) repeatedly until the desired setting (e.g. DF.1) appears.
→ Press TARE.

DELIM

DF. 1

2

SET

DF. 1

N

Selectable settings:

Display	CR	LF	CR+LF	COMMA	WINI
Separator	CR	LF	CR+LF	COMMA	not documented

9. Return to weighing mode

⇒ Press ON/OFF repeatedly or for 3 s.

16.4 Data Formats

In the menu item „D.FORM“ four data formats „DF.1-DF.4“ are available.

+ Menu setting, see chpt. 16.3.2, step 7 „Setting data format“.

1. Data format 1 „DF.1“

Example 9.9949 g:

Position	data	ASCII code	Explanation
1 20H			Positive weighing value = space character 20HNegative weighing value = minus sign 2DH
2		20H	Numeric weighing value is displayed in 8 positions.Not required positions = space character 20HWhere necessary, Overload is displayed in 2 positions with O L
3		20H
4	9	39H
5	.	2EH
6	9	39H
7	9	39H
8	4	34H
9	9	39H
10	g	67H	Weighing unit
11		20H
12 C/R	0DH		Separator C/R = 0DH, L/F = 0AHAt CR+LF data length will be increased

Printout examples KERN YKB-01N

9.9949g

Stable or instable/positive weighing value

-9.9949g

Stable or instable/negative weighing value

2. Data format 2 „DF.2“

Example 9.9949 g:

Position	Data	ASCII code	Explanation
1		20H	Positive weighing value = space character 20HNegative weighing value = minus sign 2DHStable weighing value = S (stable) 53HUnstable weighing value = U (unstable) 55H
2		20H
3	U	55H
4		20H
5		20H
6		20H
7		20H	Numeric weighing value is displayed in 8 positions.Not required positions = space character 20HWhere necessary, Overload is displayed in 2 positions with O L
8		20H
9	9	39H
10	.	2EH
11	9	39H
12	9	39H
13	4	34H
14	9	39H
15		20H	Weighing unit
16	g	67H
17 C/R	0DH		Separator C/R = 0DH, L/F = 0AHAt CR+LF data length will be increased

Printout examples KERN YKB-01N

3. Data format 3 „DF.3“

Example 9.9949 g:

Position	Data	ASCII code	Explanation
1	+	2BH	Positive weighing value = plus sign 2BHNegative weighing value = minus sign 2DH
2		20H
3		20H	Numeric weighing value is displayed in 8 positions.Not required positions = space character 20HWhere necessary, Overload is displayed in 2 positions with O L
4		20H
5	9	39H
6	.	2EH
7	9	39H
8	9	39H
9	4	34H
10	9	39H
11		20H	Weighing unit
12	g	67H
13		20H
14		20H
15 C/R	0DH		Separator C/R = 0DH, L/F = 0AHAt CR+LF data length will be increased

Printout examples KERN YKB-01N

+9.9949 g

Stable or instable/positive weighing value

-9.9949 g

Stable or instable/negative weighing value

4. Data format 4 „DF.4“

Example 9.9949 g:

Position	Data	ASCII code	Explanation
1	S	53H	Stable weighing value = S (stable) 53HUnstable weighing value = U (unstable) 55HPositive weighing value = plus sign 2BHNegative weighing value = minus sign 2DH
2		20H
3		20H
4		2BH
5		20H	Numeric weighing value is displayed in 8 positions.Not required positions = space character 20HWhere necessary, Overload is displayed in 2 positions with O L
6	+	2BH
7	9	39H
8	.	2EH
9	9	39H
10	9	39H
11	4	34H
12	9	39H
13		20H	Weighing unit
14		20H
15	g	67H
16 C/R	0DH		Separator C/R = 0DH, L/F = 0AHAt CR+LF data length will be increased

Printout examples KERN YKB-01N

16.5 Remote control instructions

Command Function
D01 Continuous data output
D02	Continuous data output of stable weighing values
D03	Status of stability display is attached to the data in the continuous output.U: instableS: stable
D05 Single output
D06 Automatic output
D07	Single output. Status of stability display is attached to the data in the output.U instable (only models ABS-N)S: stable
D08	Single output with stable weighing value
D09 Cancel output
BREAK	Function assee chpt. 3.1
Q
CAL	Function assee chpt. 3.1
TARE	Function assee chpt. 3.1
T
PRINT	Function assee chpt. 3.1

17 Service, maintenance, disposal

17.1 Cleaning

Before cleaning, disconnect the appliance from the operating voltage.

Fig. 1: Clean the balance

1. Display Please do not use aggressive cleaning agents (solvents or similar agents), but a cloth dampened with mild soap suds.
2. Weighing Plate Remove weighing plate, clean it wet and dry it before installation
3. casing, housing, case, box Please do not use aggressive cleaning agents (solvents or similar agents), but a cloth dampened with mild soap suds. Take care that the device is not penetrated by fluids and polish it with a dry soft cloth.
   Loose residue sample/powder can be removed carefully with a brush or manual vacuum cleaner.

Spilled weighing goods must be removed immediately.

1. Glass doors These can be removed as described in the following. After that clean with a commercially available glass cleaner.

Handle glass doors with care.

Attention: Risk of breakage

Risk of cuts.

Keep away your hands/fingers from the running rail.

1. Remove, screening ring, weighing plate and carrier of weighing plate

2. Remove the plastic handle by turning.

Do no touch the support of the weighing plate. This could cause damage to the balance.

1. Remove glass door carefully acc. to fig.

Line drawing of a laboratory balance scale with an attached circular component (no text or symbols)

Line drawing of a hand holding a tool with a circular mark, no text or symbols present

Line drawing of an analog laboratory balance with a circular base and pointer (no text or symbols)

Fig. 2: Remove the glass doors

1. Re-install the glass door in reverse order.

To secure the glass door always reattach the plastic handle.

17.2 Service, maintenance

The appliance may only be opened by trained service technicians who are authorized by KERN. Before opening, disconnect from power supply.

17.3 Disposal

Disposal of packaging and appliance must be carried out by operator according to valid national or regional law of the location where the appliance is used.

18 Instant help

Possible causes of errors:

In case of an error in the program process, briefly turn off the balance and disconnect from power supply. The weighing process must then be restarted from the beginning.

Fault Possible cause

The displayed weight does not appear

The displayed weight is permanently changing

The weighing result is obviously incorrect

The desired weighing unit cannot be called by UNIT key.

Automatic adjustment carried out frequently.

No data transfer between printer and balance.

The menu settings cannot be changed.

- The balance is not switched on.

- The mains supply connection has been interrupted (mains cable not plugged in/faulty).

• Power supply interrupted.

- Draught/air movement

- Glass doors not closed

• Table/floor vibrations

- Weighing plate has contact with other objects.

- Electromagnetic fields / static charging (choose different location/switch off interfering device if possible)

• The display of the balance is not at zero

- Adjustment is no longer correct.

• The balance is on an uneven surface.

• Great fluctuations in temperature.

- Electromagnetic fields / static charging (choose different location/switch off interfering device if possible)

• Unit was not activated beforehand.

- Severe temperature variations in the room or the instrument

- Communication settings are wrong.

- The menu is locked Remove the menu lock.

18.1 Error messages

Error message	Explication	Remedy
ERR H Hardware error		Switch balance off and on again. If the error message remains inform manufacturer.
ERR C	High zero point shift during adjustment	Use ON/OFF to return into weighing mode. Restart adjustment process.
	Objects present on weighing plate.
	Missing weighing plate
CAL D Display instable		Check ambient conditions (draught, vibrations etc.) Use ON/OFF to return into weighing mode. Restart adjustment process.
ERR N	Error at numerical input (e.g. wrong password)	Correct input
ERR W Wrong application		The balance changes to the previous state. Correct application.
COM ERR	Wrong remote control order.	The balance changes to the previous state. Correct remote control order.
- OL	Missing weighing plate	Install weighing plate correctly
OL	Overload	Reduce load
ABORT Process cancelled
WAIT	Wait for process
BUSY	When adjustment was started objects were present on weighing plate	Remove object and continue adjustment

Should other error messages occur, switch balance off and then on again. If the error message remains inform manufacturer.

KERN ABS-N\_ABJ-NM

Version 1.5 08/2017

Mode d'emploi

Balance analytique

Inhaltsverzeichnis

15.1 Checkweighing 68

15.2 Target mode....72

dans le menu:

Line drawing of a hand holding a transparent analytical balance with a circular component inside (no text or symbols)

graph TD
    A["Weight display"] --> B["STRAW General weighing mode"]
    B --> C["POUNTING Pouring mode"]
    C --> D["MINI MINI MINI MINI"]
    D --> E["TPC Zero tracking function"]
    E --> F["PPFUR Application Function mode"]
    F --> G["PCS Capture Item number 1-8"]
    G --> H["PCRCH Target value 100% reference"]
    H --> I["Percentage weighting OPTION Specific percentage inferred"]
    I --> J["FORMULA Formulation"]
    J --> K["TOOLS Other functions"]
    K --> L["TAPUT Target value"]
    L --> M["Target mode"]
    M --> N["LMPA Permissible range"]
    N --> O["CHECK IF Checkweighting range upper limit"]
    O --> P["HLM Pass range upper limit"]
    P --> Q["LNGTH Pass range lower limit"]
    Q --> R["UHPS Checkweighting range lower limit"]
    R --> S["PPRAM IF Weighting parameters"]
    S --> T["STRAW FAST Fast"]
    T --> U["BAD Stability detection range"]
    U --> V["OSB 0.5"]
    V --> W["IO 0.7"]
    W --> X["OLT 5.0"]
    X --> Y["VOO 0.03"]
    Y --> Z["SYSTEM System"]
    Z --> AA["PONT Decimal point indication"]
    AA --> AB["*PERIOD Period COMMA Period"]
    AB --> AC["LOWA Comma"]
    AC --> AD["RUTFOFF Auto power-off"]
    AD --> AE["START AUTO Start display"]
    AE --> AF["*KEMRIO OFF display"]
    AF --> AG["All segments 0.6"]
    AG --> AH["RFL Balance ID"]
    AH --> AI["POST Password"]
    AI --> AJ["OHOUT Menu settings output"]
    AJ --> AK["MSET Menu reset"]

graph TD
    A["Press or to search for the menu option."] --> B["Press to proceed to the next menu option."]
    B --> C["Press to confirm."]
    D["Press to return to the previous menu option."] --> E["The default settings (settings when the menu is reset)."]
    F["Weight display"] --> G["No documented"]
    G --> H["Application output"]
    H --> I["Auto port function"]
    I --> J{On L4 On L5 On OL On OL On OK}
    J --> K["Zoz return judgment"]
    K --> L["RET 0 Zone or negative value RET50 50%"]
    M["STOP"] --> N["Manual"]
    N --> O["Continuous subt factor"]
    O --> P["Output string change function"]
    P --> Q["Communication settings"]
    Q --> R{MODE 1 MODE 2 MODE 3 MODE 4 MODE 5}
    R --> S["Standard settings (MODE 1 - MODEs)"]
    S --> T["User-specified settings"]
    T --> U["Type"]
    U --> V["Bound rate"]
    V --> W["STOP"]
    W --> X["Step bit"]
    X --> Y["Handshake"]
    Y --> Z["Balance format"]
    Z --> AA["CP"]
    AA --> AB["Counter"]
    AB --> AC["CP"]
    AC --> AD["CP"]
    AD --> AE["CP"]
    AE --> AF["CP"]
    AF --> AG["CP"]
    AG --> AH["CP"]
    AH --> AI["CP"]
    AI --> AJ["CP"]
    AJ --> AK["CP"]
    AK --> AL["CP"]
    AL --> AM["CP"]
    AM --> AN["CP"]
    AN --> AO["CP"]
    AO --> AP["CP"]
    AP --> AQ["CP"]
    AQ --> AR["CP"]
    AR --> AS["CP"]
    AS --> AT["CP"]
    AT --> AU["CP"]
    AU --> AV["CP"]
    AV --> AW["CP"]
    AW --> AX["CP"]
    AX --> AY["CP"]

graph TD
    A["Weight display"] --> B["3 sec."]
    B --> C["User specified units"]
    C --> D["Conversion factors"]
    E["Other units cannot be selected in terms of weight display due to larger selections"] --> F["1 mg cannot be selected"]
    G["Minimum indication"] --> H["100%"]

graph TD
    A["Weight display"] --> B["CAL"]
    B --> C["3 sec."]
    B --> D["ORLE:5"]
    D --> E["ECAL"]
    E --> F["Calculation and measurement"]
    D --> G["Calibration"]
    G --> H["ICAL"]
    H --> I["Calculation and measurement"]
    D --> J["Q POST"]
    J --> K["GLP output function"]
    K --> L["PLR"]
    L --> M["Not documented"]

11.4 RAZ du menu

sans (→ Réglage standard

Line drawing of a laboratory balance scale with a rotating knob and pointer (no text or symbols)

Line drawing of a hand holding a tool or object with a circular mark, no text or symbols present

Line drawing of a laboratory balance scale with a circular base and lid, no text or symbols present