KERN & SOHN ABT 220-5DM User Manual

0 (0)

KERN & Sohn GmbH

Ziegelei 1

Tel: +49-[0]7433- 9933-0

D-72336 Balingen

Fax: +49-[0]7433-9933-149

E-Mail: info@kern-sohn.com

Internet: www.kern-sohn.com

Operating instruction

Analytical balance

KERN ABT

Version 1.2

03/2013

GB

ABT-BA-e-1312

 

GB

KERN ABT

 

 

Version 1.2 03/2013

 

 

 

Operating instruction

 

 

 

Analytical balance

 

 

 

 

 

 

 

 

Table of Contents

 

 

1

Technical data

................................................................................................

4

2

Declaration of .............................................................................conformity

7

3

Keyboard and display ...................................................................overview

8

3.1

Keyboard overview ..................................................................................................

8

3.2

Overview of display................................................................................................

10

4

Basic Information ........................................................................(General)

11

4.1

Proper use...............................................................................................................

 

11

4.2

Improper Use ..........................................................................................................

 

11

4.3

Warranty..................................................................................................................

 

11

4.4

Monitoring of Test ...............................................................................Resources

12

5

Basic Safety Precautions ............................................................................

12

5.1

Pay attention to ..................................the instructions in the Operation Manual

12

5.2

Personnel training ..................................................................................................

12

6

Transport and .................................................................................storage

12

6.1

Testing upon acceptance.......................................................................................

12

6.2

Packaging / return ..................................................................................transport

13

7

Unpacking, Setup .....................................................and Commissioning

15

7.1

Installation Site, ..........................................................................Location of Use

15

7.2

Unpacking ...............................................................................................................

 

15

7.2.1

Scope of delivery ......................................................................................................................

 

16

7.2.2

Installation.................................................................................................................................

 

17

7.3

Mains connection ...................................................................................................

18

7.4

Connection of peripheral .........................................................................devices

18

7.5

Initial Commissioning ............................................................................................

19

7.5.1

Turning On the Power...............................................................................................................

19

8

Adjustment ...................................................................................................

 

20

8.1

Automatic adjustment ..............................................................................via PSC

20

8.1.1

PCS function ON/OFF ..............................................................................................................

21

8.2

Automatic adjustment ...................................................................via Clock-CAL

22

8.2.1

Setting the time for .................................................................................................Clock-CAL

23

8.3

Adjustment via preset ..............................................................................process

24

8.3.1

Selecting default adjustment .......................................................................................method

24

8.3.2

Default setting: Adjustment .......................................................................with internal weight

25

8.3.3

Default setting: Adjustment ................................................................test with internal weight

25

8.3.4

Default setting: Adjustment ...............................................................test with external weight

26

8.4

Carrying out alternative ......................................................adjustment methods

27

8.4.1

Adjustment with internal ................................................................................................weight

27

8.4.2

Adjustment test with .........................................................................................internal weight

28

8.4.3

Adjustment test with ........................................................................................external weight

29

9

Verification ...................................................................................................

 

30

10

ISO/GLP log..................................................................................................

 

31

10.1

Setting the log printout .................................................of your adjustment data

31

10.2

Balance ID Number Setting

....................................................................................32

10.3

Setting the date printout ........................................................................................

33

2

 

ABT - BA - e - 1312

10.3.1

Printout Date and Time, without weight value

...................................................................... 33

11

Basic Operation ...........................................................................................

34

11.1

Weighing .................................................................................................................

34

11.2

Taring ......................................................................................................................

34

11.3

Changing the display..............................................................................................

35

11.4

Changing readability ..............................................................................................

36

11.5

Underfloor weighing...............................................................................................

37

12

The menu......................................................................................................

38

12.1

Changing settings ..................................................................................................

38

12.2

How to change settings .........................................................................................

38

12.3

Call up menu ...........................................................................................................

39

12.4

Selecting the menu.................................................................................................

40

12.5

Menu overview........................................................................................................

41

12.6

Menu Lock...............................................................................................................

44

12.7

Resetting the menu ................................................................................................

44

12.8

Settings control display .........................................................................................

45

13

Description of individual functions............................................................

46

13.1

Stability filter...........................................................................................................

46

13.1.1

Standard mode.....................................................................................................................

46

13.1.2

Anti-convection mode...........................................................................................................

47

13.1.3

High-stability Mode...............................................................................................................

47

13.1.4

Apportioning mode ...............................................................................................................

48

13.2

Standstill display ....................................................................................................

49

13.3

Auto Zero.................................................................................................................

50

13.4

Setting date.............................................................................................................

51

13.5

Setting time.............................................................................................................

52

13.6

Capacity display .....................................................................................................

53

14

Application Functions .................................................................................

54

14.1

Parts counting ........................................................................................................

54

14.2

Percent determination............................................................................................

55

14.3

Density determination ............................................................................................

56

14.3.1

Density determination of solids ............................................................................................

56

14.3.2

Determining density of liquids ..............................................................................................

57

14.4

Auto Print ................................................................................................................

59

14.5

Add up mode...........................................................................................................

60

14.6

Recipe mode ...........................................................................................................

62

15

Data output...................................................................................................

64

15.1

RS 232C interface ...................................................................................................

64

15.2

Data Formats...........................................................................................................

64

15.3

Remote control instructions ..................................................................................

65

15.4

Standard Settings...................................................................................................

66

15.5

User Settings ..........................................................................................................

67

15.5.1

Communication speed settings ............................................................................................

68

15.5.2

Delimiter settings..................................................................................................................

68

15.5.3

Parity settings.......................................................................................................................

68

15.5.4

Stop bit settings....................................................................................................................

69

15.5.5

Input-output data format settings .........................................................................................

69

15.5.6

Handshake settings..............................................................................................................

69

16

Service, maintenance, disposal..................................................................

70

16.1

Cleaning ..................................................................................................................

70

16.2

Service, maintenance .............................................................................................

70

16.3

Disposal...................................................................................................................

70

17

Instant help...................................................................................................

71

ABT-BA-e-1312

3

1 Technical data

KERN

ABT 100-5M

 

ABT 120-4M

Readability (d)

0.01 mg

 

0.1 mg

 

 

 

 

Weighing range (max)

101 g

 

120 g

 

 

 

 

Minimum load (Min)

1 mg

 

10 mg

 

 

 

 

Verification value (e)

1 mg

 

1 mg

 

 

 

 

Verification class

I

 

I

 

 

 

 

Reproducibility

0.05 mg

 

0.1 mg

 

 

 

 

Linearity

± 0.15 mg

 

± 0.2 mg

 

 

 

 

Stabilization time

10 sec

 

3 sec

 

 

 

 

Adjustment weight

 

internal

 

 

 

 

Weighing units

 

g, ct

(calibrated appliances)

 

 

 

 

Smallest part weight for piece

1 mg

 

1 mg

counting

 

 

 

 

Reference quantities at

10, 20, 50,100

piece counting

 

 

 

Weighing plate, stainless

 

ø 80mm

steel

 

 

 

 

Dimensions of the housing (B

217 x 356 x 338

x D x H)

 

 

 

Dimensions

Weighing room 168 x172 x223

Glass wind screen [mm]

 

 

 

Net weight (kg)

 

7

 

 

 

 

 

Permitted environmental

+10° C to +30° C

condition

 

 

 

Humidity of air

max. 80 % relative (not condensing)

 

 

AC adapter (Primary)

AC 100 -240 V, 400 mA 50/60Hz

 

 

 

Rated electric power supply

 

DC 12 V, 1 A

 

 

 

Pollution Degree

 

2

 

 

 

Overvoltage Category

 

Category II

 

 

 

Altitude

 

Up to 2000 m

 

 

Installation Site

device may only be used indoors

 

 

 

 

4

ABT-BA-e-1312

KERN

ABT 220-4M

 

ABT 320-4M

Readability (d)

0.1 mg

 

0.1 mg

 

 

 

 

Weighing range (max)

220 g

 

320 g

 

 

 

 

Minimum load (Min)

10 mg

 

10 mg

 

 

 

 

Verification value (e)

1 mg

 

1 mg

 

 

 

 

Verification class

I

 

I

 

 

 

 

Reproducibility

0.1 mg

 

0.1 mg

 

 

 

 

Linearity

± 0.2 mg

 

± 0.2 mg

 

 

 

 

Stabilization time

 

3 sec

 

 

 

Adjustment weight

 

internal

 

 

 

 

Weighing units

 

g, ct

(calibrated appliances)

 

 

 

 

Smallest part weight for

1 mg

 

0,1 mg

piece counting

 

 

 

 

Reference quantities at

10, 20, 50,100

piece counting

 

 

 

Weighing plate, stainless

 

ø 80mm

steel

 

 

 

 

Dimensions of the housing

217 x 356 x 338

(B x D x H)

 

 

 

Dimensions

Weighing room 168 x172 x223

Glass wind screen [mm]

 

 

 

Net weight (kg)

 

7

 

 

 

 

 

Permitted environmental

+10° C to +30° C

condition

 

 

 

Humidity of air

max. 80 % relative (not condensing)

 

 

AC adapter (Primary)

AC 100 -240 V, 400 mA 50/60Hz

 

 

 

Rated electric power supply

 

DC 12 V, 1 A

 

 

 

 

Pollution Degree

 

2

 

 

 

 

Overvoltage Category

 

Category II

 

 

 

Altitude

 

Up to 2000 m

 

 

Installation Site

device may only be used indoors

 

 

 

 

ABT-BA-e-1312

5

KERN

ABT 120-5DM

 

ABT 220-5DM

Readability (d)

0.01/0.1 mg

 

0.01/0.1 mg

 

 

 

 

Weighing range (max)

42 g/120 g

 

82 g/220 g

 

 

 

 

Minimum load (Min)

1 mg

 

1 mg

 

 

 

 

Verification value (e)

1 mg

 

1 mg

 

 

 

 

Verification class

I

 

I

 

 

 

 

Reproducibility

±0.02/ 0.1 mg

 

±0.05/ 0.1 mg

 

 

 

 

Linearity

± 0.05/0.2 mg

 

± 0.1/0.2 mg

 

 

 

Stabilization time

3sec./10 sec.

 

 

 

Adjustment weight

 

internal

 

 

 

 

Weighing units

 

g, ct

(calibrated appliances)

 

 

 

 

Smallest part weight for piece

 

1 mg

counting

 

 

 

 

Reference quantities at

10, 20, 50,100

piece counting

 

 

 

Weighing plate, stainless

 

ø 80mm

steel

 

 

 

 

Dimensions of the housing (B

217 x 356 x 338

x D x H)

 

 

 

Dimensions

Weighing room 168 x172 x223

Glass wind screen [mm]

 

 

 

Net weight (kg)

 

7

 

 

 

 

 

Permitted environmental

+10° C to +30° C

condition

 

 

 

Humidity of air

max. 80 % relative (not condensing)

 

 

AC adapter (Primary)

AC 100 -240 V, 400 mA 50/60Hz

 

 

 

Rated electric power supply

 

DC 12 V, 1 A

 

 

 

 

Pollution Degree

 

2

 

 

 

 

Overvoltage Category

 

Category II

 

 

Altitude

Up to 2000 m

 

 

Installation Site

device may only be used indoors

 

 

 

 

6

ABT-BA-e-1312

2 Declaration of conformity

KERN & Sohn GmbH

D-72322 Balingen-Frommern

Tel: 0049-[0]7433- 9933-0

Postfach 4052

Fax: 0049-[0]7433-9933-149

E-Mail: info@kern-sohn.de

Internet: www.kern-sohn.de

Declaration of conformity

EC-Konformitätserklärung ECDéclaration de conformité

EC-Dichiarazione di conformità ECDeclaração de conformidade EC-Deklaracja zgodności

EC-Declaration of -Conformity EC-Declaración de Conformidad EC-Conformiteitverklaring

ECProhlášení o shode EC-Заявление о соответствии

D

Konformitäts-

Wir erklären hiermit, dass das Produkt, auf das sich diese Erklärung bezieh

 

erklärung

mit den nachstehenden Normen übereinstimmt.

GB

Declaration of

We hereby declare that the product to which this declaration refers conform

 

conformity

with the following standards.

CZ

Prohlášení o

Tímto prohlašujeme, že výrobek, kterého se toto prohlášení týká, je vsouladu

 

shode

s níže uvedenými normami.

E

Declaración de

Manifestamos en la presente que el producto al que se ref

 

conformidad

declaración está de acuerdo con las normas siguientes

F

Déclaration de

Nous déclarons avec cela responsabilité que le produit, auquel se rapporte l

 

conformité

présente déclaration, est conforme aux normes citées ci-après.

I

Dichiarazione di

Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si rifer-

 

conformitá

sce è conforme alle norme di seguito citate.

NL

Conformiteit-

Wij verklaren hiermede dat het product, waarop deze verklaring betrekkin

 

verklaring

heeft, met de hierna vermelde normen overeenstemt.

P

Declaração de

Declaramos por meio da presente que o produto no qual se refer

 

conformidade

declaração, corresponde às normas seguintes.

PL

Deklaracja

Niniejszym oświadczamy, że produkt, którego niniejsze oświadczenie dotyczy,

 

zgodności

jest zgodny z poniższymi normami.

RUS

Заявление о

Мы заявляем, что продукт, к которому относится данная декларация,

соответствии

соответствует перечисленным ниже нормам.

Electronic Balance: KERN ABT

 

 

 

2004/108/EC

 

EN 61326-1:2006

 

 

 

2006/95/EC

 

EN 61010-1: 2010

 

 

 

 

Datum

27.03.2013

Signatur

Date

 

Ort der Ausstellung

72336 Balingen

Signature

 

Albert Sauter

Place of issue

 

 

KERN & Sohn GmbH

 

 

 

Geschäftsführer

 

 

 

Managing director

KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0

Fax +49-[0]7433/9933-149, E-Mail: info@kern-sohn.com, Internet: www.kern-sohn.com

ABT-BA-e-1312

7

3 Keyboard and display overview

3.1Keyboard overview

In weighing mode:

Key

 

Designa-

 

Pressed once and released

 

Keep pressed for about 3 seconds

 

 

tion

 

 

 

 

 

 

 

 

 

 

 

 

 

[ON/OFF]

 

Switches between the opera-

Switches the key notification buzzer on/off.

 

 

 

 

 

tion and standby modes.

 

 

 

 

 

 

 

 

 

 

 

 

 

[CAL]

 

Invokes adjustment or menu

Invokes adjustment or menu selection.

 

 

 

 

selection.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[TARE]

 

Tare or set weight display to zero

 

 

 

 

 

 

 

 

 

 

 

 

[UNIT]

 

Changing the display

 

 

 

 

 

 

 

 

 

 

 

 

 

[PRINT]

 

Issue of weighing value to

Issue of date and time to external applianc-

 

 

 

 

external appliances (printer,

 

 

 

 

es.

 

 

 

 

 

 

PC)

 

 

 

 

 

 

 

 

 

 

 

 

 

ABT 120-4M

For

verified applications cutting off the last

 

 

 

 

ABT 220-4M

 

 

 

 

digit

is only possible for models w

 

 

[1d/10d]

 

ABT 320-4M

 

 

 

readout of 0,01 mg.

 

 

 

ABT 100-5M

 

 

 

 

For all other models the button 1/10d is inop-

 

 

 

 

ABT 120-5DM

 

 

 

 

erable.

 

 

 

 

ABT 220-5DM

 

 

 

 

 

 

 

8

ABT-BA-e-1312

In menu:

Key

 

Designa-

 

Pressed once and released

 

Keep pressed for about 3 se-

 

 

tion

 

 

conds

 

 

 

 

 

 

 

 

 

[ON/OFF]

 

Back to menu

Return to weighing mode

 

 

 

 

 

 

 

 

 

 

[CAL]

 

Menu selection

 

 

 

 

 

 

 

 

 

 

 

 

 

[TARE]

 

Parameter selection

 

 

 

 

 

 

Storing settings

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[UNIT]

 

Entering numeric values Increases the numeric value of flashing digit by 1.

 

 

 

 

 

 

 

[PRINT]

 

Entering numeric values. Shifts flashing digit.

 

 

 

 

 

 

 

 

 

 

[1d/10d]

 

No effect.

 

 

 

 

 

 

 

 

 

 

 

ABT-BA-e-1312

9

3.2Overview of display

 

 

Capacity display

 

 

 

 

 

 

 

 

Units display

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Display

 

Designation

 

Description

 

 

 

Standstill display

Indicates that the weighed value is stable. Highlights current set-

 

 

 

ting during menu item selection

 

 

 

 

 

 

 

 

Appears during adjustment. Flashes prior to start of automatic

 

 

 

Weight symbol

adjustment.

 

 

 

Appears during parameter selection for adjustment. Blinks to ad-

 

 

 

 

 

 

 

 

vise necessity of adjustment.

 

 

 

Number symbol

Indicates numeric value entry.

 

 

 

Menu symbol

Appears during menu selection. Always shown when the menu is

 

 

 

locked.

 

 

 

 

 

 

 

Asterisk

Indicates that the displayed numeric value is not a mass value.

 

 

 

Add-on symbol

Indicates set-up of Add-on mode.

 

 

 

Communication

Is lit up during communication with external appliances via RS-

 

 

 

symbol

232C cable. Shown when communication functions are ON.

 

 

 

Battery symbol

Indicates a low battery voltage when using the balance with the

 

 

 

optional battery pack.

 

 

 

 

 

 

 

Auto Print symbol

Indicates set-up of the Auto Print function.

 

 

 

Standby mark

Appears during standby status of balance.

 

Inverse triangle sym-

Illuminates as part of the solid specific gravity measurement dis-

 

bol

play.

 

 

 

10

ABT-BA-e-1312

4 Basic Information (General)

4.1Proper 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 “nonautomatic“- balance, i.e. the mate-

rial 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.

4.2Improper Use

Do not use balance for dynamic addonweighing 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 conditons. Other areas of use must be released by KERN in writing.

4.3Warranty

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 or damage by media, liquids, natural wear and tear

The appliance is improperly set up or incorrectly electrically connected

The measuring system is overloaded

ABT-BA-e-1312

11

4.4Monitoring 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 pagewww( .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

5.1Pay 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.

5.2Personnel training

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

6 Transport and storage

6.1Testing upon acceptance

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

12

ABT-BA-e-1312

6.2Packaging / 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.

ABT-BA-e-1312

13

KERN & SOHN ABT 220-5DM User Manual

14

ABT-BA-e-1312

7 Unpacking, Setup and Commissioning

7.1Installation 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.

7.2Unpacking

Carefully remove the balance from the packaging, remove plastic cover and setup balance at the intended workstation.

ABT-BA-e-1312

15

7.2.1 Scope of delivery Serial accessories:

Balance

Weighing plate

Carrier of weighing plate

Screening ring

Mains adapter

Adapter cable holder

Protective cover

Operating Manual

16

ABT-BA-e-1312

7.2.2 Installation

• Attach the adapter cable holder. Peel the protective sheet of adhesive of the adapter cable holder, and stick it on the back of the balance as shown in the figure.

• Carrier of weighing plate, attach weighing plate and circular screen in order.

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

• When the key panel and the display must be protected from dirt and wear, place the cover over the key panel.

ABT-BA-e-1312

17

7.3Mains connection

Power is supplied via the external mains power supply. The stated voltage value must be the same as the local voltage. Only use original KERN mains power supplies. Using other makes requires consent by KERN.

7.4Connection 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 andperipheral devices by KERN, as they are ideally tuned to your balance.

Terminal for external devices:

1

2

3

4

1 RS -232 interface

2Mains connector

3 Anti-theft safety device (for chains or other fastenings)

4Connection earthing terminal

18

ABT-BA-e-1312

7.5Initial Commissioning

A warming up time of 4 hours after switching on stabilizes the measuring values. The accuracy of the balance depends on the local acceleration of gravity. Strictly observe hints in chapter Adjustment.

7.5.1 Turning On the Power

1.Supply power to balance via mains adapter. After the balance performs a self check, calibration will be automatically executed. During this process, the display will change as follows. “CHE 5”, “CHE 4”...... “CHE 0”, “CHE 2”, “CHE 1”

, “CAL 2 – CAL 0” , “CAL-End”, “oFF”. This adjustment can be interrupted immediately after switching-on the power

supply by actuating the [ON/OFF]-key.

However, at least one adjustment must be carried out before the balance can be used.

2.Actuate the [ON/OFF] key. After all displays appear, the gram (g) symbol appears.

3.Pressing the [ON/OFF] key again turns on the standby symbol and puts the balance in standby (warm up) status. Current time (see ch. 13.5) will be displayed.

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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. Stabilisation requires a warm-up period of 1 or 4 hours (for models d = 0.01 mg). Ensure that there are no objects on the weighing plate.

8.1Automatic adjustment via PSC

The default setting for balances of the series ABT ("PSC ON") prompts automatic adjustment via the PSC function.

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. If PSC is left ON, when there is a temperature change that would influence sensitivity, span calibration executes automatically to maintain the sensitivity of the balance. Adjustment in weighing mode is carried out automatically under the following conditions:

(1)If a change in environmental temperature (0.5 °C) occurs;

(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.

(4)When balance was disconnected from the mains.

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; afterwards the display will show "PSC run". During operation, the display will automatically change and the motor sound of the weight loading system is heard. 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. The sensitivity before and after adjustment is slightly different. Also, no measurements can be made during adjustment. To prevent a start-up of adjustment during a measuring process you have to actuate the [ON/OFF] key as soon as the weight symbol starts flashing. This will interrupt automatic adjustment.

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8.1.1 PCS function ON/OFF

Press the [CAL] key repeatedly until "SettinG" appears.

Press the [TARE] key. The display shows “CAL dEF”.

Actuate the [CAL] key repeatedly until the current "PSC: " setting appears:

To change the setting, actuate the [TARE] key as soon as

"PSC: " appears.

You can use the [CAL] key to select between the following settings:

“PSC-on” Function activated

“PSC-oF” Function deactivated

The current setting is indicated by the standstill display ().

Confirm your selection by pressing the [TARE] key

To exit the function, press the [ON/OFF] key.

Brief actuation of ON/OFF key:

Back to previous menu.

Long actuation of ON/OFF key:

Back to weighing mode.

PSC and Clock-CAL may be turned on and off separately. The setting control display

(see ch. 12.6) shows the weight symbol (), when PSC or Clock-CAL or both functions are activated.

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8.2Automatic adjustment via Clock-CAL

(only models ABT 100-5M, ABT 120-5DM, ABT 220-5DM)

With the help of its internal adjusting weight and integrated clock the balance can be set to carry out automatic adjustment at set times (up to three times daily). ClockCAL is a very convenient function, when calibration reports are desired to be made for regular calibrations, or when wishing span calibrations during break times to avoid interruption of measurement work.

The weight symbol blinks for about two minutes as notification of span calibration before it begins. Automatic adjustment can be stopped by actuating the [ON/OFF] key during this message.

Clock-CAL function ON/OFF:

Press the [CAL] key repeatedly until "SettinG" appears.

Press the [TARE] key. The display shows “CAL dEF”.

Actuate the [CAL] key repeatedly until the current "tCal: " setting appears:

To change the setting, actuate the [TARE] key as soon as

"tCal: " appears.

You can use the [CAL] key to select between the following settings:

“tCAL-on” Function activated

“tCAL-oF” Function deactivated

The current setting is indicated by the standstill display ().

Confirm your selection by pressing the [TARE] key

To exit the function, press the [ON/OFF] key.

Brief actuation of ON/OFF key:

Back to previous menu.

Long actuation of ON/OFF key:

Back to weighing mode.

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