VHB 2T1 - Camera Kern - Free user manual and instructions

Product Type	Weighing Pallet Truck
Brand	Kern
Model	VHB 2T1
Weighing Range (max)	2000 kg
Readability (d)	1 kg
Reproducibility	1 kg
Linearity	±2 kg
Stabilization Time	3 seconds
Allowable Ambient Temperature	-10°C to +40°C
Humidity Level	95% max. (non-condensing)
Weighing Units	kg, lb
Power Supply	4 AA batteries 1.5 V
Operating Time	80 h or 1700 weighings
Auto Off	3 minutes
Net Weight	125 kg
Dimensions	1150 x 725 x 555 mm (L x W x H approx)
Main Functions	Gross weighing, net weighing with tare, button tare, manual tare entry, weighing totalization
Certification	CE/EU Declaration of Conformity available online
Maintenance	Clean with a damp cloth and mild soap; do not use solvents
Safety Instructions	Do not overload, avoid shocks, do not use in explosive atmospheres
Repairability	Opening only by personnel trained and authorized by Kern

Frequently Asked Questions - VHB 2T1 Kern

How to turn the VHB 2T1 scale on and off?

Press the ON/OFF key to turn the balance on or off.

How to perform a gross weighing?

Make sure the balance is at zero, then lift the load. The gross weight is displayed directly.

How to tare a container (button tare)?

Place the empty container on the balance, press the TARE key. The display returns to zero and the NET indicator lights up. Then add the net load.

How to enter a tare manually?

Press the PRE-TARE key. The last tare weight appears. Use the TOTAL (increase) or PRE-TARE (decrease) keys to adjust the value, then the TARE key to move to the next digit. Confirm by holding the PRE-TARE key for 3 seconds.

How to totalize several weighings?

After each weighing, press the TOTAL key. The display alternately shows the number of weighings and the total. To view the total, hold the TOTAL key for 3 seconds.

What to do if the display shows 'LO-BA'?

The battery level is low. Replace the 4 AA batteries immediately to avoid data loss.

What does the error message 'HELP 1' mean?

The weighing system has been overloaded. Unload the balance immediately to avoid damage.

How to clean the balance?

Use a damp cloth with mild soap solution. Do not use aggressive solvents. Then wipe dry with a dry cloth.

What to do in case of unstable display?

Check for drafts, vibrations, or if the balance is in contact with a foreign object. Keep away from electromagnetic sources (phones, radios).

Where to find the declaration of conformity?

The CE/EU declaration of conformity is available online at www.kern-sohn.com/ce.

USER MANUAL VHB 2T1 Kern

Yellow and black manual pallet jack with control panel (no visible text or symbols)

Further language versions you will find online under www.kern-sohn.com/manuals

Diagram of a forklift lifting stacked boxes (no text or symbols)

Line drawing of a forklift carrying stacked boxes (no text or symbols)

Operating instruction

Pallet truck scale

Table of Contents

1 Technical data .... 4

2 Declaration of conformity 5

3 Basic instructions for scales....6

3.1 Proper use....6

3.2 Improper Use 6

3.3 Warranty 6

3.4 Monitoring of Test Resources....7

4 Basic safety instructions for scales 7

4.1 Pay attention to the instructions in the Operation Manual 7

4.2 Personnel training....7

5 Transport and storage 7

5.1 Testing upon acceptance 7

5.2 Packaging....7

6 Unpacking, Setup and Commissioning 8

6.1 Site of installation, place of operation for scales 8

6.2 Scope of delivery....9

6.3 Battery operation....9

6.4 Commissioning....9

6.5 Overview of display....10

6.6 Keyboard overview....11

7 Functions of display unit.... 12

7.1 Prior to weighing: ZERO-POINT CHECK.... 12

7.2 Gross weighing....12

7.3 Net weighing: TARING BY PRESSING A BUTTON.... 12

7.4 Net weighing: MANUAL TARE INPUT....12

7.5 Addition of individual weighings.... 14

8 Service, maintenance, disposal 15
8.1 Cleaning 15
8.2 Service, maintenance.... 15
8.3 Disposal.... 15
9 Error messages 15
10 Instant help.... 16

1 Technical data

KERN VHB 2T1
Readability (d) 1 kg
Weighing range (max) 2000 kg
Reproducibility 1 kg
Linearity ± 2 kg
Stabilization time 3 sec.
Allowable ambient temperature	-10°C .... + 40°C
Humidity of air	max. 95% (not condensing)
Weighing Units	kg, lb
Electric Supply	4 x 1.5V AA batteries
Operating time	80 h/approx.1700 weightings
Auto Off	3 min
Net weight	125 kg

Dimensions:

206° 180 555 mm 180 65 mm 725 mm 410 mm 1150 mm 120 85 205 mm

2 Declaration of conformity

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

www.kern-sohn.com/ce

3 Basic instructions for scales

3.1 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.

3.2 Improper Use

Do not use balance for dynamic weighings. 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. (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.

3.3 Warranty

Warranty claims shall be voided in case

• Our conditions in the operation manual are ignored

- The appliance is used outside the described uses

• The appliance is modified or opened

• Mechanical damage and damage caused by media, liquids

• Natural wear and tear

- The appliance is improperly set up or incorrectly electrically connected

• The measuring system is overloaded

3.4 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.

4 Basic safety instructions for scales

4.1 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.

4.2 Personnel training

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

5 Transport and storage

5.1 Testing upon acceptance

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

5.2 Packaging

Keep all parts of the original packaging in case you need to return the appliance.

Only use original packaging for returning.

Before sending, disconnect all connected cables and loose/movable parts.

6 Unpacking, Setup and Commissioning

6.1 Site of installation, place of operation for scales

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:

- The load must be lifted clear of the display unit's case and other pallets.

Diagram of a forklift lifting stacked boxes (no text or symbols)

Incorrect lifting of a load

Line drawing of a pallet jack with stacked boxes on top (no text or symbols)

Correct lifting of a load

• The accuracy of the weighing system is falling by approximately 0.1 % per degree if there is a slant of more than 2°. Holes and unevenness, too, have this effect. A smooth floor is ideal.
• Optimum accuracy in weighing results is achieved if the load centre is between the forks. The forks are easily bent and twisted when the load is off-centre. This may result in diminished accuracy. In verifiable models off-centre loads, or slants affecting accuracy, activate the inclination switch which in turn disconnects the display.

0004

Non-optimal positioning of load

100.0kS

Optimal positioning of load

• Temperature range: The maximum deviation for 0.1% of the weighed load is between -10 and +40°C. Outside this temperature range deviations of up to 0.3% may occur.
• 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.
• Major display deviations (incorrect weighing results) may be experienced should electromagnetic fields (e.g. due to mobile phones or radio equipment), static electricity accumulations or instable power supply occur. Change location or remove source of interference.

6.2 Scope of delivery

Standard accessory:

• Pallet truck scale
• 4 x 1.5V AA batteries
• Operating Manual

6.3 Battery operation

Cover battery compartment

To change the batteries, unscrew and take off the cover of the battery compartment at the back of the display unit. Replace the used batteries with new ones (4 x 1.5V AA batteries) (Pay attention to correct polarity) and reinsert the battery cover.

In order to save the battery, the balance switches automatically off after 3 minutes without weighing.

Used batteries are indicated by "LO-BA", on the display. Change the batteries immediately.

If the balance is not used for a longer time, take out the batteries and store them separately. Leaking battery liquid could damage the balance.

6.4 Commissioning

To activate the weighing system, press the key.

The operating temperature for the electronic system and the weighing cells will have been reached after three to five minutes. . Prior to this, deviations of c. 0.3% are possible.

Loads should not be lifted before this zero adjust is complete.

6.5 Overview of display

KERN VHB Max 2000 kg d = 1 kg NET PRE- TARE TOTAL TARE ON/OFF UNIT

THE DISPLAY

The three displays provide the following information:

The weighing system (incl. load) is stable

— The indicated weight has a negative value

NET

The indicated value is a net weight

DISPLAY-MESSAGES

The following messages may appear on the display:

HELP 1 Weighing system overloaded

HELP 2 Taring impossible due to negative gross weight

HELP 3 Negative signal of load cells to A-D converter / slant

HELP 4 Entered tare weight is too high. Press the 📄 key again in order to cancel the HELP display and enter a new, reduced tare weight.

HELP 7 The signal of the load cells on the A-D converter is too high.

LO-BA The storage battery status is too low; charge storage battery.

6.6 Keyboard overview

Each key provides an operating as well as an input function.

Operating function

	Zero setting and automatic tare	Confirm and enter numeric values. Shifts the flashing digits to the left
	Input of tare	Entering numeric values: Decreases the numeric value of flashing digit by 1.
	Adding	Entering numeric values: Increases the numeric value of flashing digit by 1.
	On / Off	Delete

IMPORTANT

The actuation of a key will only be accepted if the load is stable and the message "load stable" is lit up. The display unit only carries out functions as long as the load is stable.

WARNING

If the weighed weight exceeds the set maximum, the display will show: "ERRO2". To prevent damage to the display unit or the weighing cells, please lighten the load of the weighing system instantly.

SLANT

The verifiable model of the weighing system will display stripes only if a slant exceeds 2^ . If this is the case, place the weighing system on an even base.

7 Functions of display unit

7.1 Prior to weighing: ZERO-POINT CHECK

Prior to each weighing process ensure that the system is unloaded and clear of obstructions. The display unit provides automatic zero adjustment. This means, that small deviations from the zero-point are corrected automatically. If the display unit does not correct the zero-point automatically you will have to carry out a manual correction with the help of the key.

7.2 Gross weighing

After the load was lifted, the display shows the gross value of the weighed weight.

7.3 Net weighing: TARING BY PRESSING A BUTTON

The display unit offers an option that allows tare weights to be reset to zero by pressing a button. In this way net weight changes can be traced. After taring, the display unit will once again start at the smallest display step.

Lift the load.
Press TARE button

☐ The display unit shows zero.
☐ The lit up display "NET", indicates that a tare weight is active.

- Loading and unloading the net load.

☐ The net value for the weighed weight is shown on the display.

☐ For unloading this will be a negative value.

The system reverts to standard weighing mode when a zero adjustment is carried out in an unloaded state.

7.4 Net weighing: MANUAL TARE INPUT

You may enter the tare weight at any time, that is, regardless whether the scales are in a loaded or unloaded state. To achieve higher accuracy, a tare weight with a higher resolution may be entered, regardless of the size of the weight and the display steps of the indicator.

Press button

☐ The most recently used tare value appears.
☐ The segment on the right is flashing.

➢ Press the ☐key for three seconds if the indicated tare value is to be used again

or

Press button

➢ Press the numeric or down the desired value.

PRE-TARE until the flashing number has reached

To move to the next segment, press the key

➢ Repeat this action until the display shows the desired tare value.

To activate the tare weight (but not for storing): Press the seconds, to confirm the value.

☐ The tare weight is now activated.
□ “NET” appears.
☐ If the system is loaded at this moment, the net value of the weighed weight appears on the display.
☐ If the system is unloaded, the system indicates the entered tare value negative.
☐ The entered value remains active until the weighing system is turned off, a new tare weight entered, a new load tared (See 7.3.) or if a reset to zero is carried out:

The weighing system is loaded: Press the

for two seconds. The tare

value will be reset to zero and the system reverts to standard weighing mode.

or

The weighing system is unloaded: Press

ton A reset to zero is

carried out and the system reverts to standard weighing mode.

To activate and store the tare weight: Confirm all segments by pressing the key.

☐ The tare weight is now activated and stored.
□ “NET” appears.
☐ If the system is loaded at this moment, the net value of the weighed weight appears on the display.
☐ If the system is unloaded, the entered tare value is shown negative.
☐ The entered value remains active even after the system was turned off, until a new tare weight is entered, a new load tared (See 7.3.) or a reset to zero is carried out.

The weighing system is loaded: Press the

for two seconds. The tare

value will be reset to zero and the system reverts to standard weighing mode.

or

The weighing system is unloaded: Press button. A reset to zero is carried out and the system reverts to standard weighing mode.

7.5 Addition of individual weighings

The display unit offers an option that allows the addition of weighings and the display of the total weight. When the tare weight is active, the net weight is automatically added up.

• Loading the system with the load to be added
  To add the weighed weight to the memory, press the ^TOTAL key.

☐ The displayed value is stored and simultaneously added to the summation memory.
☐ The display alternately shows consecutive numbers (number of weighings) and the total value (summation memory).
☐ If the weighing system has been equipped with a printer, the value shown is printed at the same time (KERN VHS).
☐ After a few seconds the system automatically reverts to standard weighing mode.

or

To read the total weight calculated so far, press the ^TOTAL key for three seconds.

☐ The display alternately shows the consecutive numbers (number of weighings) and the total.
☐ After a few seconds the system automatically reverts to standard weighing mode.

Whilst the total value is displayed, you may delete the memory by pressing the key.

☐ If the system is equipped with a printer, an overview print is made (KERN VHS)
☐ The display shows the sequence number 00 and the initial value 0.0 kg.
☐ The system automatically reverts to standard weighing mode.

Important:

➢ Please note that the balance must be unloaded between the individual weighing procedures.
Additional summation is also possible after the scales were turned on or off. The stored values are kept after the scales were turned off.

8 Service, maintenance, disposal

8.1 Cleaning

Please do not use aggressive cleaning agents (solvents or similar agents), but a cloth dampened with mild soap suds. Ensure that no liquid penetrates into the device and wipe with a dry soft cloth.

8.2 Service, maintenance

The appliance may only be opened by trained service technicians who are authorized by KERN.

The same maintenance guidelines apply to the chassis of the mobile weighing system as those for simple manual pallet trucks. Experience has taught us that the integrated weighing system continues to function even if the chassis was damaged by overloading.

General rules:

• As the steering wheels are mounted at the front, it is better to pull rather than push the manual pallet truck.
• If the lifting device is not used, the manual lever should be left in centre position. This prolongs the life span of the seals.
• To prevent damages to the electronic system and weighing cells it is necessary that welding work on the entire weighing system is carried out exclusively by technical specialists.
• The bearings of the wheels (with the exception of polyurethane) as well as the joints in the load roller section should be regularly cleaned and greased.

8.3 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.

9 Error messages

The battery symbol flashes: The battery is almost empty and must be replaced.

Low bat

Critical error message:

The battery is almost empty.

Replace it immediately.

Otherwise the weighing system will turn off. All data will be deleted and you will have to readjust the system.

10 Instant help

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.

Help:

Fault Possible cause

The displayed weight does not glow.

- The balance is not switched on.

- The batteries are empty

The displayed weight is permanently changing

- Draught/air movement

- Sites with vibration.

- The weighing plate is in contact with foreign matter.

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

The weighing value is obviously wrong

• The display of the balance is not at zero

- Adjustment is no longer correct.

• Great fluctuations in temperature.

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

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

KERN VHB

Version 1.4 2018-03

Diagram of a forklift lifting stacked boxes (no text or symbols)

Line drawing of a forklift carrying stacked boxes (no text or symbols)

Levage correct de la charge

KERN VHB Max 2000 kg d = 1 kg NET PRE- TARE ↓ TOTAL ↑ TARE ← ON/OFF UNIT

L'AFFICHAGE