EW 22002NM - Kitchen scales Kern - Free user manual and instructions

USER MANUAL EW 22002NM Kern

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

(Singapore,Malaysia)

(Singapore,Malaysia)

(Singapore,Malaysia)

Pcs M on 30 Pcs M on 30 ο 0 I I I F Pcs

P. SEt % ο 0 I I I F

(tl Singapore,Malaysia)

5.2.6 Draft shield with glass sliding doors (only model KERN EW 120-4NM standard) .............. 17

Recommended adjusting weight, not included (class)

• Minimum unit weight at piece counting under laboratory conditions: ➢ Perfect ambient conditions to perform high resolution counting ➢ No dispersion of counted parts weight **Minimum unit weight at piece counting under normal conditions: ➢ Unstable ambient conditions (wind gusts, vibrations) ➢ Dispersion of counted parts weightEW/EG-N-def-2431

1.1 Read-off of the various weighing units

(Singapore,Malaysia)

(Singapore,Malaysia)

(Singapore,Malaysia)

The balance you have acquired serves to determine the weighing value of the 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. The weighing value can be read off after a stable weighing value has been obtained.

2.2 Inappropriate use

Do not use the balance for dynamic weighing. 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 a permanent load on the weighing plate. This can damage the measuring equipment. Be sure to avoid impact shock and overloading the balance in excess of the prescribed maximum load rating (max.), minus any possible tare weight that is already present. This could cause damage to the balance. Never operate the balance in hazardous locations. The series design is not explosion- proof. Structural alterations may not be made to the balance. This can lead to incorrect weigh- ing results, faults concerning safety regulations as well as to destruction of the balance. The balance may only be used in compliance with the described guidelines. Varying areas of application/planned use must be approved by KERN in writing.

The guarantee is not valid following - non-observation of our guidelines in the operating instructions - use outside the described applications - alteration to or opening of the device - mechanical damage and damage caused by media, liquids - natural wear and tear - inappropriate erection or electric installation - overloading of the measuring equipmentEW/EG-N-def-2431

The metrology features of the balance and any possible available adjusting weight must be checked at regular intervals within the scope of quality assurance. For this purpose, the answerable user must define a suitable interval as well as the nature and scope of this check. 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. Test weights and balances can be adjusted quickly and at a reasonable price in KERN’s accredited DKD calibration laboratory (return to national normal). 3 Fundamental safety information

3.1 Observe the information in the operating instructions

Please read the operating instructions carefully before erecting and commissioning, even if you already have experience with KERN balances.

The device may only be operated and looked after by trained members of staff. 4 Transport and storage

4.1 Acceptance check

Please check the packaging immediately upon delivery and the device during unpack- ing for any visible signs of external damage.

Keep all parts of the original packaging for a possibly required re- turn. 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 plat- form, power unit etc. against shifting and damage.EW/EG-N-def-2431

5 Unpacking, installation and commissioning

5.1 Place of installation, place of use

The balance is constructed in such a way that reliable weighing results can be achieved under normal application conditions. By selecting the correct location for your balance, you will be able to work quickly and precisely. Therefore please observe the following at the place of installation: - 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. In- admissible bedewing (condensation of air moisture on the device) can occur if a cold device is taken into a significantly warmer environment. In this case, please acclimatise the device for approx. 2 hours at room temperature after it has been disconnected from the mains. - Avoid static charging of the material to be weighed, weighing container and windshield. Major display deviations (incorrect weighing results) are possible if electromagnetic fields occur as well as due to static charging and instable power supply. It is then nec- essary to change the location.EW/EG-N-def-2431

Carefully remove the balance from its packaging, remove the plastic wrapping and position the balance in its intended working location.

Use the foot screws to level the balance until the air bubble in the bubble level is in the prescribed circle.

5.2.2 List of items supplied

Standard accessories: (1) Balance

(3) Weighing plate bracket

(5) Operating instructions

5.2.3 Positioning the weighing plate

Screw the bracket on tightly according to the drawing and subsequently attach the weighing plate.EW/EG-N-def-2431

5.2.4 Serial draft shield installation

(Only for models with readout d = 0,001 g standard)

Cover Sides (2 large, 2 small)

Slide the small side (1) into the large side (2)

Properly attach another large side to both sides.

Install the fourth side as shown in the figure.

Put the cover on the assembled sides.EW/EG-N-def-2431

Remove the weighing plate and loosen the screws to remove the bracket. Use a screwdriver to loosen both screws to the left and right of the bracket guide and re- move. Now place the draft shield to fit on the housing and and secure through the opened sliding doors using both screws. Screw the bracket on tightly according to the drawing and subsequently attach the weighing plate.

5.2.6 Draft shield with glass sliding doors

Electric power supply is by means of the external mains supply circuit. The printed voltage level must comply with the local voltage. Only use original KERN mains supply circuits. The use of other makes is subject to approval by KERN. Mains adaptor connection:

5.4 Operation using a rechargeable battery (optional)

Take off the weighing plate and remove the bracket by loosening the screw. Use a screwdriver to loosen both screws to the left and right of the bracket guide and re- move. Release both retaining hooks on the lower housing section and carefully remove the lower housing section to the rear (please observe the upper housing section guides on the back of the balance). Loosen and remove both fastening screws as shown on the illustration. Remove the rechargeable battery from the packaging and begin by connecting the electric power supply to the circuit board of the rechargeable battery. Subsequently set up the plug-in connection to the computer circuit board of the balance (CN5). The rechargeable battery is placed on the left side of the housing in such a way that it can be screwed onto the balance through the existing mounting using the screw loos- ened previously. Press lightly into the housing prior to this, (there is only one correct installation possibility). Now also re-attach the display using the loosened screw. Place the upper housing section on the rear guides and tilt forward until both retaining hooks on the lower housing section audibly lock into place. Screw down both screws to the left and right of the bracket guide tightly and re-se- cure the bracket. Attach the weighing plate. Information: Though the rechargeable battery is immediately operative, it should be charged for at least 8 hours using the mains adaptor before being used for the first time. Mains adaptor connectionEW/EG-N-def-2431

5.5 Connecting peripheral equipment

The balance must be disconnected from the mains before connecting or disconnecting additional equipment (printer, PC) to or from the data interface (see chap. 8.) Only use KERN accessories and peripheral equipment with your balance. These have been ideally coordinated to your balance.

5.6 Initial start-up

A warm-up time of 10 minutes stabilises the measured values after switching on. The accuracy of the balance depends on the local acceleration of the fall. Please be sure to observe the information in the chapter on adjusting (chap. 5.7).

If the (*) sign can be seen, the balance is being supplied with power via the mains adaptor. The balance is in weighing mode when the key is operated. The power display is then no longer to be seen on the display overview.

weighing dish unloaded half of weighing range weighing range is used to full capacity The weighing range of the balance is divided into 20 graphic cuboids. Zero (0) will appear on the graphic display if there is no weighing value on the balance. 10 graphic cuboids are displayed if the balance is loaded up to one half of its weighing range. Information: If tare weighing is being carried out, the graphic weight display will continue to indicate the number of cuboids of the tare weight. *EW/EG-N-def-2431

Unstable The balance is in a stable condition if the [ο] stability indication appears on the dis- play. The [ο] indication disappears if the condition is unstable. Stable ambient condi- tions can be achieved by using the draft shield (See chap. 5.2.4 for installation)

5.6.4 Zero display on the balance

Environmental influences can lead to the exact figure of “0.000“ not being displayed in spite of an empty weighing dish. It is, however, possible to reset your balance to zero at any time and thus ensure that weighing really does commence at zero. Setting to zero when a weight is applied is only possible within a certain type-dependent range. In the event that the balance cannot be reset to zero with an applied weight, this range has been exceeded. [o - Err ] will appear on the display. Operation Display If an exact zero reading is not displayed on the balance in spite of the weighing dish being empty, press the key and the balance will start resetting to zero.

Your balance will be set to zero after a short standby time. In addition to this, the sign for the balance zero setting will be displayed [→0].

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 weigh- ing 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 adjust- ment process must be carried out at every start-up, after every change of location as well as in case of fluctuating environment temperature. It is also recommendable to adjust the balance periodically during weighing operation in order to obtain exact measured values.

5.8.1 Adjusting with externall weight (only KERN EW-N)

For verified balances the verification switch is locked (except for class of accuracy I). In order to proceed with the verification, please unlock the verification switch (except for class of accuracy I).

5.8.2 Adjusting with internal weight (only KERN EG)

Adjust the balance prior to any start-up. If the supply voltage is disconnected, the scale must be calibrated. It is not possible to use the scale without prior adjustment. Using a precision weight, the accuracy of the balance can be checked at any time and adjusted. Adjustment procedure: Check that the surrounding conditions are stable. A short warm-up time of about 10 minutes is recommended for stabilisation. Operation Display Switch-on balance with button , after a short time [S.A. CAL] will appear.

Press buttons and at the same time and release at the same time, [WAIt]] is briefly displayed.

After that [CAL.0] will appear flashing, Zero point will be saved.

After that [CAL.on] will appear.

Rotate the turn knob on the right side of the bal- ance in to position CAL.

Adjustment is carried out automatically. [CAL.on] will appear flashing.

The display changes automatically from [CAL.on] to [CAL.oFF] The process of adjustment is completed.

Turn the adjusting knob on the right side of the balance to the WEIGH position.

Calibration is now finalised. The balance will automatically return to weighing mode.

5.8.3 Adjusting with external weight (only KERN EW)

Carry out adjustment with the recommended adjusting weight (see Chapter 1 „Tech- nical Data“). The adjustment can also be carried out with different adjusting weights (see table), but not ideal from a metrological point of view. Information concerning the adjusting weights is available at: http://www.kern-sohn.com

Adjustment procedure: Check that the surrounding conditions are stable. A short warm-up time of about 10 minutes is recommended for stabilisation. Operation Display Switch on the balance using the key

Press and hold the key until [ CAL] appears. Now release the key.

Press the key while holding down the key. Subsequently release both keys sim- ultaneously.

The zero point will be stored.

Place the adjusting weight carefully on the centre of the weighing plate. Display flashing [on F.S ] then a moment later the weight value of the adjusting weight will be indicated.Remove the adjusting weight, the ad- justing is terminated. The balance will automatically return to weigh- ing mode. In case of an adjusting error or a wrong adjust- ing weight [- Err] appears in the display, re- peat the adjustment procedure.

General: According to the EU guideline 2014/31/EU balances must be verified if they are to be used as follows (legally regulated area): a) For commercial transactions if the price of goods is determined by weighing b) For the production of medines in pharmacies as well as for analyses in the med- ical and pharmaceutical laboratory c) For official purposes d) For the production of finished packages In case of doubt, please contact your local office of weights and measures. Verification information An EU qualification approval is available for those balances marked as appropriate for verification in the technical data. In the event that the balance is applied in an area subject to verification as described above, it must be verified and re-verified at regular intervals. Re-verification of a balance is carried out in compliance with the respective legal pro- visions of the states. The term of verification validity for balances in Germany, for example, is normally 2 years. The legal provisions of the country of use are to be observed.EW/EG-N-def-2431

5.10 Verification switch and official seal

Prior to verification the verification switch must be moved from the displayed position (see direction of arrow) to verification position. Once in this position, a parenthesis will be displayed around the last display point. Following calibration the balance is sealed at the marked position. Balance calibration is not valid without the “official seals“. Position of the “official seals“:

Balances that are subject to compulsory verification must be taken out of oper- ation if:

• The weighing result of the balance is outside the error limit. Therefore, apply a known test weight (approx. 1/3 of the nominal load) to the balance at regular inter- vals and compare with the display value.

• The reverification deadline has been exceeded.

• Output of weight value on an external device (printer) or PC

• Save the respective mode settings (unit counter, per- cent weighing, tolerance weighing)

• Unit counter and percent mode: Choice menu for unit and %

• Save function parameters

• Call up lower and upper tolerance levels

• Key to alter the weight unit (g, ct, Pcs, %)

• Entry of lower and upper tolerance levels

• Choosing the function values within the function

• Call up individual functions (multiple print)

• Call up adjusting functions (permanent print)

• The entry point is moved to the left each time by one step (chap. 6.2.4.3).

Stability indication

(upper right) ] grain [ ](tl)Tael (Hong Kong)

lower right) Tael (Taiwan) [ ] (to) Tola

Rechargeable battery mode (optional). [ ] Display changes to mains-powered mode if the voltage falls below the prescribed minimum.

Indication of weighing unitsEW/EG-N-def-2431

Display symbol: g Operation Display Press the key to switch on the balance. The balance will carry out a self-test.

Your balance is ready to weigh as soon as the “0.000" display appears. Apply the item to be weighed. The weight value is displayed.

A switch can be made from one unit to another, e.g. from ”g“ to another unit, for example ”ct“, by repeatedly pressing the key. Setting – see chapter 7 on “Functions“. [g] → [ct] → [Pcs] → [%] → [g] → …….

Press the key to switch the balance off.

ο 0 I I I F 0.00%EW/EG-N-def-2431

Objects which, because of their size or shape, cannot be put on the scale, can be weighed by means of underfloor weighing. Proceed as follows:

• Switch off the balance.

• Turn the balance over.

• Open the cover plate (1) on the base of the balance.

• Hang on the hanging loop (optional) completely for underfloor weighing.

• Place the balance over an opening.

• Hang the item to be weighed on the hanging loop and carry out weighing.

CAUTION Take care that the hooks used for the underfloor weighing are stable enough to hold the goods which you wish to weigh (risk of breakage). Always make sure that there are no living beings or materials below the load that could be injured or damaged.

NOTE After completing the underfloor weighing, the opening in the floor of the balance must be closed again (dust protection).

6.2.1.2 Tare weighing (tare)

The empty weight of any weighing container can be tared at the push of a button, so that the net weight of the item to be weighed is displayed during subsequent weigh- ings. Operation Display Place the empty tare container on the weighing plate. The total weight of the applied container is displayed.

Press the key to start the tare proce- dure.

The weight of the container is now stored internally.

Place the items to be weighed in the tare container.

Now read off the weight of the items on the display.

The tare procedure can be repeated as often as desired, for example when weighing several components into a mixture (weighing in). Press the key to set the display to ”0.000".

The total weight of the container is re- moved by taring.

Apply further components to the weigh- ing container (weighing in).

Now read off the weight of the added item to be weighed on the display.

Information: The balance is only ever able to store one tare value. The stored tare value is displayed prefixed by a minus sign when the balance is empty. Remove all items from the weighing plate in order to delete the stored tare value and subsequently press the key. The tare procedure can be repeated as often as desired. The limit has been reached when the entire weighing range is used to full capacity.

6.2.2 Piece counting

(excl. model KERN EW120-4NM) Display symbol: PCS When counting units you can either count items into or out of the container. In order to be able to count a substantial number of items, the average weight per item must be determined using a small quantity (reference units). The greater the reference unit, the greater the counting accuracy. A particularly high reference must be chosen for small or greatly varying parts. The work cycle is divided into four stages:

• Tare the weighing container

• Determine the reference unit

• Weigh in the reference unit

• Count the items Operation Display

ance on. Use the key to select unit change-over Pcs (see chap. 6.2.2).

2. Tare containers can also be used dur-

ing unit counting. Before starting unit counting use the key to tare out the container.

The reference unit will flash on the dis- play.

4. Further reference units of 10, 30, 50

and 100 can be called up by repeatedly operating the key. Important: The greater the reference unit, the more accurate the unit count.

5. Place as many items to be counted

on the balance as required by the set reference unit.

The reference unit is stored.

Now place the items to be counted in the container. The appropriate number of items will be shown on the display.

7. Use the key to return to the de-

sired weighing mode.

Information: If the“L-Err “ error message is displayed, the smallest counting weight has been fallen short of – see chap. 1 ”Technical Data“.

Pcs M on 30 Pcs M on 30 0 I I I F Pcs

This function is used to increase the counting accuracy by increasing the reference quantity. It can thereby be avoided that an inadequate reference unit is used, as this could lead to inaccurate results. When applying this function, the necessary minimum number of items is automati- cally ensured. Operation Display

1. Carry out item 1-5 as in

e.g. place 10 items on the weighing plate.

The reference weight of the 10 items is stored.

Counting accuracy can be increased by carrying out the following steps.

3. Doubling the items to be weighed:

Apply a further 10 items (approx.).

Operate the key The reference weight of the 20 items is stored.

Information: Every additionally applied number of items increases the reference and im- proves the counting accuracy. A particularly high quantity of reference units must be chosen for small items or items with greatly varying own weight.

The reference unit is stored.

Now place the items to be counted in the container. The appropriate number of items will be shown on the display

Use the key to return to the desired weighing mode.

• If the “Add“ error message appears, the applied number of items is too small for correct determination of the reference. Place further items on the balance to determine the reference.

• The determined reference is preserved until the balance is disconnected from the mains. Pcs M 40 Pcs M 125

6.2.3 Percent weighing

(excl. model KERN EW120-4NM) Display symbol: % Percent weighing allows the weight to be displayed as a percentage in relation to a reference weight. The displayed weight value is adopted as a fixed prescribed per- cent value. (Standard setting: 100%). Operation Display

1. Use the key to switch the bal-

ance on. Use the key to select unit change-over [ % ] (see chap. 6.2.1).

Information: Tare containers can also be used during percent weighing. Before starting per- cent weighing use the key to tare out the container.

3. Place the reference weight = 100%

in the balance dish.

The reference weight is stored.

P. SEt % ο 0 I I I F

From now on the applied weight is shown as a percentage.

Use the key to return to the desired weighing mode.

• If the “o-Err “ error message appears: - the reference weight is outside the weighing range (see chap. 1 ”Tech- nical Data“). - the set key was operated during step 2 when the weight had been ap- plied.

• The 100% reference is preserved until the balance is disconnected from the mains.

(excl. model KERN EW120-4NM) This balance can be used as a measuring and sorting balance, whereby the respective lower and upper tolerance limits are programmable. Limit values can be entered in the following operating modes:

• Percent weighing 0 I I I F

Call up the function menu: Press the key until [Func] appears, then release.

The first balance mode will appear:

2. Tolerance weighing

Operate the key to call up tolerance weighing mode. 2.SEL 0 (Off) 2.SEL 1 (ON) Use the key to change the standard factory configuration.

Operate the key. The tolerance mark is always displayed (factory set- ting).

Use the key to change the setting (1 / 2). The tolerance mark is only displayed when the balance display is at a stand- still.

The tolerance mark is displayed in all ranges.

Use the key to change the setting: Tolerance mark is only displayed above a zero point range (+5).

Use the key to set the tolerance mark. 1 tolerance mark can be displayed:

Use the key to change the setting: 2 tolerance marks can be displayed:

Operate the key: You will now leave the function menu and return to weighing mode.

6.2.4.2 Entering the limit values by weighing

Important information ! Always begin by entering the lower limit value, followed by the upper limit value. Operation Display

Set to tolerance weighing: Press the key until [L. SEt] appears and then release.

will flash [ - ]. The lower limit value can be set. Place a sample for the lower (i.e. smaller) limit value on the weighing plate:

Store using the key. The stored lower weight value is displayed briefly. Entry is now completed if 1 tolerance mark was selected in the basic setting (see chap. 7.2.1).

4. If 2 tolerance marks have been se-

lected, the upper limit value must now be determined. The tolerance mark

is flashing [ + ], and the upper limit value can be set. Place a sample for the upper (i.e. larger) limit value on the weighing plate:

upper weight value is displayed briefly; entry is completed.

Set tolerance weighing: Press the key until [L. SEt] appears and then release.

the currently stored lower limit value. Press the key: The last digit in the display starts to flash.

3. Use the key to increase the nu-

wish to alter (from right to left).

5. Further entries as described in items

lower weight value is displayed briefly. Entry is now completed if 1 tolerance mark was selected in the basic setting (chap. 7.2.1).

7. If 2 tolerance marks have been

selected, the upper limit value must now be determined.

Please proceed as described in item 2, starting with the last display digit.

7.1 Access and changing of numerous functions:

The balance has been set to a certain standard configuration in the factory. This con- figuration is marked by a ☆. The configuration can be changed as follows: Operation Display

1. Access to the functions.

Switch on the balance:

When released the following will appear : (possible configurations are listed in chap. 7.2.2).

2. Changing the functions

Run through the various functions for configuration by continuing to press the key.

Operate the key in order to change the last position in the parameter.

Store the chosen function by operating the key. You will now leave the function menu and return to weighing mode.

The balance has been set to a certain standard configuration in the factory. This is marked by a ☆.

Description of the choice possibilities Bar graph

On (chap. 7.2.1) Only displayed when tolerance weighing is active: Weighing with a tolerance range Precondition

Checked also when the balance is unsta- ble

Checked also when the balance is stable Weighing with a tolerance range Range

Checked also when the balance is stable

The entire range is checked (including negative values) Number of adjustment points for tolerance weighing

Single point setting (the range between OK and LO is checked)

Values above the upper limit and values below the lower limit are configurable (i.e. range between HI, OK and LO) Zero alignment

Automatic zero point correction activated. Automatic shutoff after 3 min. for rechargeable battery op- eration (function is only avail- able in rechargeable battery mode)

Automatic shutoff deactivated for re- chargeable battery operation (optional).

Automatic shutoff activated for rechargea- ble battery operation (optional). Display speed

Setting for metering

Non-sensitive but slow Vibratory filter

Non-sensitive but slow (very unsettled in- stallation location).

Extended printout of the cali- bration protocol (function selectable in EG models only)

Data output (only selectable, if the cali- bration switch is not in the calibration position, see Ch. 5.10)

No printout possible if the last display location is enclosed in brackets.

Printout possible even if the last display loca- tion is enclosed in brackets. Note: Always select this setting before balance calibration because this menu item can no longer be called up after calibration

Printout possible only when the calibration switch is not in the calibration position, see Ch. 5.10.

7-digit data format Weight unit (only selectable, if the cali- bration switch is not in the calibration position see Ch. 5.10)

(tl Singapore,Malaysia)

7.2.1 Parameters when weighing with a tolerance range

(excl. model KERN EW120-4NM) Settings 21. Co. to 23. P I. can only be set if the tolerance weighing function has been activated. Function

Description of the choice possibilities

Display conditions of the tolerance mark

Tolerance mark is always dis- played, even if standstill check not yet indicated.

Tolerance mark only displayed in connection with standstill check. Tolerance range

Tolerance mark displayed throughout entire range. Setting the tolerance mark

1 tolerance step is displayed: “-“ or “+”

2 tolerance steps are displayed: “- “ and “+”EW/EG-N-def-2431

Description of the choice possi- bilities Output format at inter- face

No data issued. (Menu setting “7 I.F. [1] or [2]“ only )

Continuous serial output.

Output following printing of PRINT/M.

Automatic output upon stable weighing value. The first value to stabilise is adopted if this is -0.00 or less. No new output until weight is removed and a new load ap- plied.

Output following printing of PRINT/M. Baud rate

No parity bit (Menu setting

Press and the at the same time and keep them pressed until „Func2“ will be displayed.

When released, „1.CrC. 0.“ is displayed.

Press . Wait until the software status of the balance is displayed.

Return to weighing mode: Press or .EW/EG-N-def-2431

8 Data output (excl. EWB models) The balance is supplied as standard with an interface RS 232C.

8.1 Description of the serial data output (RS 232C)

The data output is placed at the rear side of the balance. It is a 5-pole standard socket. Pin description see following illustration

The output format, output control, transfer speed and parity bit can be set following the choice of a certain operating mode. The various possibilities are described in chap.

By selecting the corresponding function at your balance one of the two following data formats can be set:

• 6-digit data format (excl. model KERN EW-120-4NM) Consisting of 14 words including the final signal; CR=0DH, LF=0AH (CR=return travel / LF=line feed)

Note: The 7-digit format is identical with the 6-digit format except for the addi- tional signal D8. Calibration mark data format The calibration mark “/” is used to mark the following positions as “non-calibrated”.

• 6-digit data format 6-digit data format for3 the selection of “A.PrF.3” (Printout possible only when the calibration switch is not in the calibration position, see Ch. 5.10.) Consisting of 15 words including the final signals; CR=0DH, LF=0AH and the cali- bration mark “/”.

7- digit data format for the selection of “A.PrF.3” (Printout possible only when the

calibration switch is not in the calibration position, see Ch. 5.10.) Consisting of 16 words including the final signals; CR=0DH, LF=0AH and the cali- bration mark “/”.

8.4.2 Algebraic sign

P 1 = 1 word P 1 Code Meaning

2 B H Data are 0 or positive

2 D H Data are negative

20 H Date are 0 or positive

D 1 to D 7 7 words with 6-digit format (excl. model KERN EW-120-4NM) D 1 to D 8 8 words with 7-digit format D * Code Meaning

30 H – 39 H Data 0 to 9 (max. 6 characters in 6-type format) . (Point) 2 EH Decimal point, position not fixed

20 H Space character, leading zero oppressedEW/EG-N-def-2431

U 1, U 2 = 2 words as ASCII codes

Code Meaning Symbol (SP)

8.4.5 Result of the evaluation / Type of data

S 1 = 1 Word S 1 Code Meaning When weighing using tolerance range:

47 H Weighing value within the tolerance range Result of the evaluation issued at two points: Low / high

S 2 = 1 Word S 2 Code Meaning

55 H Data not stabilised (fluctuating) *

is made up of 4 characters, CR=0DH, LF=0AH

8.5.3 External control commands

4FH 32H Continuous output of stable weight value data

4FH 33H Output of stable and unstable weight values after pressing the PRINT button

4FH 34H Data output upon stable weight value, having previously unloaded the weighing scale

4FH 35H Data output upon stable weight value. No data output at unstable weight value. Data output again, after stabilization has been reached

4FH 36H Data output upon stable weight value. Continuous data outputting at unstable weight value.

4FH 37H Output of stable weight values after pressing the PRINT button

4FH 38H One-time immediate data output*

4FH 39H One-time data output after stabilization has been reached*

4FH 41H One-time, immediate data output after lapse of a defined period of time*

4FH 42H One-time, immediate data output after lapse of a defined period of time and upon stable weight value*

• While using these commands for remote control purposes, do not press the PRINT button (data transmission error). In case data transmission error occurs, briefly cut off the weighing scale from its power supply source.EW/EG-N-def-2431

• Control of data output through “O0~O7” commands as well as setting up weighing scale’s functions, are actions that bring about similar effects.

• Implementation of commands “O8 and O9" is connected with data input com- mands.

• If any command from the “O0~O9” range has been carried out, then its status will remain active until the next command is inputted. If, however, the weighing scale is switched off, then the output data control system will return to its previ- ous setup.

8.6 Feedback message after data transmission

is made up of 5 characters, CR=0DH, LF=0AH

Types of feedback messages:

9 Maintenance, upkeep, disposal

Please disconnect the device from the operating voltage before cleaning. Only use a cloth dampened with mild suds and not aggressive cleaning agents (sol- vents or similar). Please ensure that fluids are not able to get into the device and rub off using a clean, soft cloth. Loose sample residue/powder can be removed carefully using a brush or hand vac- uum cleaner. Remove any spilt material to be weighed immediately.

9.2 Maintenance, upkeep

The device may only be opened by trained service engineers authorised by KERN. Disconnect from the mains supply before opening.

The operating company shall dispose of the packaging and the device in compliance with the valid national or regional law of the operating location.EW/EG-N-def-2431

10 Troubleshooting The balance should be switched off for a short time following an interruption in the programme sequence and disconnected from the mains supply. It is then necessary to repeat the weighing process from the beginning. Help: Interruption Possible cause

Weight display is not illuminated.

• The balance is not switched on.

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

• Power supply interrupted.

• Draught/air movement

• Table/floor vibrations

• The weighing plate is in contact with for- eign matter.

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

The weighing result is obviously incorrect

• The balance display is not set to zero

• Adjustment is no longer correct.

• Great fluctuations in temperature.

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

Switch the balance off if other error messages should appear and then switch on again. Contact the manufacturer if the error message does not disappear.EW/EG-N-def-2431

11 Declaration of Conformity

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

The scope of delivery for verified weighing balances (= conformity- rated weighing balances) includes a Declaration of Conformity.EW/EG-N-BA-def-2431

(Singapore,Malaysia)

(Singapore,Malaysia)

(Singapore,Malaysia)

Pcs M on 30 Pcs M on 30 ο 0 I I I F Pcs

P. SEt % ο 0 I I I F

(tl Singapore,Malaysia)