KERN ALJ, PLJ, ALS, PLS Operating Manual

KERN & Sohn GmbH

Ziegelei 1 D-72336 Balingen email: info@kern-sohn.com

Phone: +49-[0]7433- 9933-0 Fax: +49-[0]7433-9933-149 Internet: www.kern-sohn.com

Operating Manual Analytical and precision balances

KERN ALJ/ALS/PLJ/PLS

Version 3.8 08/2013 GB

ALJ/ALS/PLJ/PLS-BA-e-1338

KERN ALJ/ALS/PLJ/PLS

Version 3.8 08/2013

Operating Manual Analytical and precision balances

Table of Contents 1

Technical Data ............................................................................................... 4

Explanation of graphical symbols .............................................................. 17

Basic Information (General) ........................................................................ 17

3.1 Proper use ................................................................................................................17

3.2 Improper Use ............................................................................................................17

3.3 Warranty ...................................................................................................................17

3.4 Monitoring of Test Resources ...................................................................................17

Basic Safety Precautions ............................................................................ 18

4.1 Pay attention to the instructions in the Operation Manual .........................................18

4.2 Personnel training .....................................................................................................18

Transportation & Storage ............................................................................ 18

5.1 Testing upon acceptance ..........................................................................................18

5.2 Packaging / return transport ......................................................................................19

Unpacking, Setup and Commissioning ..................................................... 21

6.1 Installation Site, Location of Use ...............................................................................21

6.2 Unpacking / placing ..................................................................................................21

6.2.1 Placing ...................................................................................................................................... 22

6.2.2 Scope of delivery / serial accessories ...................................................................................... 24

6.3 Appliance overview ...................................................................................................24

6.3.1 Front side of the balance .......................................................................................................... 24

6.3.2 Back and bottom side of the balance ....................................................................................... 25

6.4 Controls ....................................................................................................................26

6.4.1 Overview of display .................................................................................................................. 26

6.4.2 Keyboard overview ................................................................................................................... 26

6.5 Connect and switch-on power supply ........................................................................27

6.6 Rechargeable battery operation (depends on model, see chp.1) ..............................27

6.7 Connection of peripheral devices ..............................................................................28

6.8 Initial Commissioning ................................................................................................28

6.8.1 Stability display ......................................................................................................................... 28

6.8.2 Balance zero display ................................................................................................................ 28

Adjustment ................................................................................................... 28

7.1 Models with external weight (KERN ALS/PLS)..........................................................29

7.1.1 Adjustment with recommended adjustment weight (factory setting) ........................................ 29

7.1.2 Adjustment with weights of other nominal values .................................................................... 30

7.2 Models with internal weight (KERN ALJ/PLJ) ............................................................32

7.2.1 Adjustment models PLJ-M ....................................................................................................... 33

7.2.2 Overwrite internal adjustment weight ....................................................................................... 34

7.3 Verification ................................................................................................................35

ALJ/ALS/PLJ/PLS-BA-e-1338 3

Basic Operation ........................................................................................... 36

8.1 Underfloor weighing ..................................................................................................37

User menu .................................................................................................... 38

9.1 Weighing unit ............................................................................................................43

9.2 Data output type .......................................................................................................44

9.3 Baud rate ..................................................................................................................45

9.4 Auto Zero ..................................................................................................................46

9.5 Filter .........................................................................................................................48

9.6 Standstill control display ...........................................................................................49

9.7 Setting the contrast of the display .............................................................................50

9.8 Display background illumination ................................................................................51

9.9 Automatic switch- -by mode ...................................52

User menu .................................................................................................... 53

10.1 Parts counting ...........................................................................................................54

10.1.1 Switching over between quantity and weight display ........................................................... 56

10.1.2 Automatic reference optimization ......................................................................................... 56

10.1.3 Numeric entering of the reference weight ............................................................................ 57

10.2 Density determination (Hydrostatic weighing) ...........................................................58

10.2.1 Density determination of solids ............................................................................................ 58

10.2.2 Determining density of liquids .............................................................................................. 60

10.3 Adding function .........................................................................................................62

10.4 Checkweighing .........................................................................................................64

10.5 Percent determination ...............................................................................................66

10.5.1 Entering the reference weight by weighing .......................................................................... 66

10.5.2 Numeric entering of the reference weight ............................................................................ 67

10.6 Animal weighing function ..........................................................................................68

10.7 Peak value function ..................................................................................................69

Data output RS 232C ................................................................................... 70

11.1 Technical Data ..........................................................................................................70

11.2 Pin allocation of balance output plug .........................................................................70

11.3 Interface....................................................................................................................71

11.4 Data transfer .............................................................................................................71

11.5 Format for data transmission ....................................................................................72

11.6 Remote control instructions.......................................................................................74

11.7 Printer mode .............................................................................................................74

Error messages ............................................................................................ 76

Service, maintenance, disposal .................................................................. 76

13.1 Cleaning ...................................................................................................................76

13.2 Service, maintenance ...............................................................................................76

13.3 Disposal ....................................................................................................................76

Instant help ................................................................................................... 77

Declaration of Conformity ........................................................................... 78

ALJ/ALS/PLJ/PLS-BA-e-1338

1 Technical Data

KERN ALJ 160-4A ALJ 250-4A ALJ 310-4A

Weighing range (max) 160 g 250 g 310 g Readability (d) 0.1 mg 0.1 mg 0.1 mg Reproducibility 0.1 mg 0.1 mg 0.1 mg Linearity ± 0.3 mg ± 0.3 mg ± 0.3 mg Stabilization time (typical) 4 sec. 4 sec. 4 sec. Minimum unit weight at

piece counting

> 0.5 mg > 0.5 mg > 0.5 mg

Warm-up time 8 hours Adjustment weight internal Reference quantities at

piece counting

10, 25, 50, 100 freely selectable

Weighing Units

ct, g, gn, lb, mo, oz, ozt,

tl (HK), tl (Singap. Malays), tl (Tw), pen Electric Supply 24 V AC, 500mA Operating temperature Humidity of air max. 80 % (not condensing) Housing (B x D x H) mm 210 x 340 x 330 Dimensions of windshield

(B x D x H) mm

160 x 140 x 205 (inside)

190 x 195 x 225 (outside)

Weighing plate (stainless steel)

Ø 80 mm

Weight kg (net) 6.5 kg Interface RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1338 5

KERN ALJ 160-4AM ALJ 250-4AM ALJ 310-4AM

Weighing range (max) 160 g 250 g 310 g Readability (d) 0.1 mg 0.1 mg 0.1 mg Reproducibility 0.1 mg 0.1 mg 0.1 mg Linearity ± 0.3 mg ± 0.3 mg ± 0.3 mg Verification value (e) 1 mg 1 mg 1 mg Verification class I I I Minimum load (Min) 10 mg 10 mg 10 mg Stabilization time (typical) 4 sec. 4 sec. 4 sec. Minimum unit weight at

piece counting

> 0.5 mg > 0.5 mg > 0,5 mg

Warm-up time 8 hours Adjustment weight internal Reference quantities at

piece counting

10, 25, 50, 100 freely selectable

Weighing Units

ct, g, gn, lb, mo, oz, ozt,

tl (HK), tl (Singap. Malays), tl (Tw), pen Electric Supply 24 V AC, 500 mA Operating temperature Humidity of air max. 80 % (not condensing) Housing (B x D x H) mm 210 x 340 x 330 Dimensions of windshield

(B x D x H) mm

160 x 140 x 205 (inside)

190 x 195 x 225 (outside)

Weighing plate (stainless steel)

Ø 80 mm

Weight kg (net) 5.7 kg 6.7 kg 5.7 kg Interface RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1338

KERN ALS 160-4A ALS 250-4A

Weighing range (max) 160 g 250 g Readability (d) 0.1 mg 0.1 mg Reproducibility 0.1 mg 0.1 mg Linearity ± 0.3 mg ± 0.3 mg Stabilization time (typical) 4 sec. 4 sec. Minimum unit weight at

piece counting

> 0.5 mg > 0.5 mg

Warm-up time 8 hours

Recommended adjustment weight,

not added (class)

150 g (E2) 200 g (E2)

Reference quantities at piece counting

10, 25, 50, 100 freely selectable

Weighing Units

ct, g, gn, lb, mo, oz, ozt,

tl (HK), tl (Singap. Malays), tl (Tw), pen Electric Supply 24 V AC, 500 mA Operating temperature Humidity of air max. 80 % (not condensing) Housing (B x D x H) mm 210 x 340 x 330 Dimensions of windshield

(B x D x H) mm

160 x 140 x 205 (inside)

190 x 195 x 225 (outside) Weighing plate (stainless steel) Ø 80 mm Weight kg (net) 5.7 kg Interface RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1338 7

KERN PLJ 310-3F PLJ 420-3F PLJ 720-3A

Weighing range (max) 310 g 420 g 720 g Readability (d) 0.001 g 0.001 g 0.001 g Reproducibility 0.001 g 0.001 g 0.001 g Linearity ± 0.003 g ± 0.003 g ± 0.002 g Stabilization time (typical) 3 sec. 2 sec. 2 sec. Minimum unit weight at

piece counting

> 5 mg > 5 mg > 5 mg

Warm-up time 4 hours 4 hours 4 hours Adjustment weight internal Reference quantities at

piece counting

10, 25, 50, 100 freely selectable

Weighing Units

ct, g, gn, lb, mo, oz, ozt,

tl (HK), tl (Singap. Malays), tl (Tw), pen

Electric Supply 230V/50 Hz

(Euro) 9V DC

230V/50 Hz

(Euro) 9V DC

230V/50 Hz

(Euro) 24V AC Operating temperature + 5° C / + 35° C Humidity of air max. 80 % (not condensing) Underfloor weighing

Clevis type

eyelet, standard

Housing (B x D x H) mm 210 x 340 x 160 Windshield mm

inside Ø 150, 60 high outside Ø 160, 70 high

yes yes yes

Weighing plate (stainless steel)

Ø 11 cm Ø 11 cm Ø 11 cm

Weight kg (net) 4 kg 4.5 kg Interface RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1338

KERN PLJ 1200-3A PLJ 1200-3DA

PLJ 3100-2F

Weighing range (max) 1200 g 720 g/1200 g

3100 g

Readability (d) 0.001 g 0.001 g/0.01 g

0.01 g

Reproducibility 0.001 g 0.001 g/0,01 g

0.01 g

Linearity ± 0.003 g

± 0.003 g/0.03 g

± 0.03 g Stabilization time (typical) 2 sec. 2 sec. 2 sec. Minimum unit weight at

piece counting

> 5 mg > 5 mg > 50 mg

Warm-up time 8 hours 4 hours 4 hours Adjustment weight internal Reference quantities at

piece counting

10, 25, 50, 100 freely selectable

Weighing Units

ct, g, gn, lb, mo, oz, ozt,

tl (HK), tl (Singap. Malays), tl (Tw), pen

Electric Supply

230V/50 Hz (Euro)24 V AC

230V/50 Hz

(Euro)9 V DC Operating temperature Humidity of air max. 80 % (not condensing) Underfloor weighing

Clevis type eyelet,

standard

Clevis type eyelet,

standard

Housing (B x D x H) mm 210 x 340 x 160 Windshield mm

inside Ø 150, 60 high outside Ø 160, 70 high

yes yes no

Weighing plate (stainless steel)

Ø 11 cm Ø 11 cm Ø 16 cm

Weight kg (net) 4.5 kg Interface RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1338 9

KERN PLJ 4200-2F

PLJ 6200-2A PLJ 6200-2DA

Weighing range (max) 4200 g 6200 g 4200 g /6200 g Readability (d) 0.01 g 0.01 g 0.01 g /0.1 g Reproducibility 0.02 g 0.01 g 0.01 g /0.1 g Linearity ± 0.04 g ± 0.03 g ± 0.03 g / 0.3 g Stabilization time (typical) 2 sec. 2 sec. 2 sec. Minimum unit weight at

piece counting

> 50 mg > 50 mg > 50 mg

Warm-up time 4 hours Adjustment weight internal Reference quantities at

piece counting

10, 25, 50, 100, freely selectable

Weighing Units

ct, g, gn, lb, mo, oz, ozt,

tl (HK), tl (Singap. Malays), tl (Tw), pen

Electric Supply 230V/50 Hz

(Euro)9V DC

230V/50 Hz (Euro)24V AC

Operating temperature Humidity of air max. 80 % (not condensing) Underfloor weighing

Clevis type

eyelet, standard

Clevis type

eyelet, standard

Housing (B x D x H) mm

210 x 340 x 100

210 x 340 x

100 210 x 340 x 100

Windshield mm inside Ø 150, 60 high outside Ø 160, 70 high

no no no

Weighing plate (stainless steel)

Ø 16 cm Ø 16 cm Ø 16 cm

Weight kg (net) 4.5 kg 5 kg 5.0 kg Interface RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1338

KERN PLJ 300-3FM PLJ 720-3AM

Weighing range (max) 320 g 720 g Readability (d) 0.001 g 0.001 g Reproducibility 0.001 g 0.001 g Linearity ± 0.003 g ± 0.002 g Verification value (e) 10 mg 10 mg Verification class II II Minimum load (Min) 20 mg 20 mg Stabilization time (typical) 3 sec. 2 sec. Minimum unit weight at

piece counting

> 5 mg > 50 mg

Warm-up time 4 hours Adjustment weight internal Reference quantities at

piece counting

10, 25, 50, 100, freely selectable

Weighing Units ct, g Electric Supply 220V 240 V AC, 50 Hz Operating temperature Humidity of air max. 80 % (not condensing) Underfloor weighing Clevis type eyelet, standard Housing (B x D x H) mm 210 x 340 x 100 Windshield mm

inside Ø 150, 60 high outside Ø 160, 70 high

yes

Weighing plate (stainless steel)

Ø 11 cm Ø 11 cm

Weight kg (net) 4 kg 4.5 kg Interface RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1338 11

KERN PLJ 3000-2FM PLJ 6200-2AM

Weighing range (max) 3200 g 6200 g Readability (d) 0.01 g 0.01 g Reproducibility 0.01 g 0.01 g Linearity ± 0.03 g ± 0.02 g Verification value (e) 100 mg 100 mg Verification class II II Minimum load (Min) 20 mg 50 mg Stabilization time (typical) 3 sec. 2 sec. Minimum unit weight at

piece counting

> 50 mg > 50 mg

Warm-up time 4 hours Adjustment weight internal Reference quantities at

piece counting

10, 25, 50, 100, freely selectable

Weighing Units ct, g Electric Supply 220V 240 V AC, 50 Hz Operating temperature Humidity of air max. 80 % (not condensing) Housing (B x D x H) mm 210 x 340 x 100 Windshield mm

inside Ø 150, 60 high outside Ø 160, 70 high

yes

Weighing plate (stainless steel)

Ø 16 cm Ø 16 cm

Weight kg (net) 4.0 kg 4.5 kg Interface RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1338

KERN PLS 310-3F PLS 420-3F PLS 510-3A

Weighing range (max)

310 g 420 g 510 g

Readability (d)

0.001 g 0.001 g 0.001 g

Reproducibility

0.002 g 0.002 g 0.001 g

Linearity

± 0.003 g ± 0.004 g ± 0.002 g

Stabilization time (typical)

3 sec. 3 sec. 2 sec.

Minimum unit weight at piece counting

> 5 mg > 5 mg > 5 mg

Warm-up time

4 hours 4 hours 4 hours

Recommended adjustment weight, not added (class)

300 g (E2) 400 g (E2) 500 g (E2)

Reference quantities at piece counting

10, 25, 50, 100, freely selectable

Weighing Units

ct, g, gn, lb, mo, oz, ozt,

tl (HK), tl (Singap. Malays), tl (Tw), pen

Electric Supply

230V/50 Hz (Euro)9V DC

230V/50 Hz

(Euro)24V AC

Operating temperature

Operation period 30 h

Loading time 10 h

Operating temperature Humidity of air

max. 80 % (not condensing)

Underfloor weighing

Clevis type eyelet, standard

Housing (B x D x H) mm 210 x 340 x 160 Windshield mm

inside Ø 150, 60 high

outside Ø 160, 70 high

Weighing plate (stainless steel)

Ø 11 cm

Weight kg (net)

4 kg 4.5 kg

Interface

RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1338 13

KERN PLS 720-3A PLS 1200-3A PLS 1200-3DA

Weighing range (max)

720 g 1200 g

720 g /1,200 g

Readability (d)

0.001 g 0.001 g

0.001 g /0.01 g

Reproducibility

0.001 g 0.001 g

0.001 g /0.01 g

Linearity

± 0.002 g ± 0.003 g

± 0.002 g / 0.02 g

Stabilization time (typical)

2 sec. 2 sec.

2 sec.

Minimum unit weight at piece counting

> 5 mg > 5 mg

> 5 mg

Warm-up time

4 hours 8 hours 4 hours

Recommended adjustment weight, not added (class)

600 g (E2) 1 kg (E2)

1 kg (E2)

Reference quantities at piece counting

10, 25, 50, 100, freely selectable

Weighing Units

ct, g, gn, lb, mo, oz, ozt,

tl (HK), tl (Singap. Malays), tl (Tw), pen

Electric Supply

230V/50 Hz (Euro)24V AC

Rechargeable battery

- -

Operating temperature Humidity of air

max. 80 % (not condensing)

Underfloor weighing

Clevis type eyelet, standard

Housing (B x D x H) mm

210 x 340 x 160

Windshield mm inside Ø 150, 60 high outside Ø 160, 70 high

yes yes yes

Weighing plate (stainless steel)

Ø 11 cm Ø 11 cm Ø 11 cm

Weight kg (net)

4.5 kg 4.5 kg 4.5 kg

Interface

RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1338

KERN PLS 3100-2F PLS 4200-2F

PLS 4200-2A

Weighing range (max)

3100 g 4200 g

4200 g

Readability (d)

0.01 g 0.01 g

0.01 g

Reproducibility

0.02 g 0.02 g

0.01 g

Linearity

± 0.03 g ± 0.04 g

± 0.02 g

Stabilization time (typical)

3 sec. 3 sec.

2 sec.

Minimum unit weight at piece counting

> 50 mg > 50 mg

> 50 mg

Warm-up time

4 hours 4 hours 4 hours

Recommended adjustment weight, not added (class)

3 kg (E2) 4 kg (E2)

4 kg (E2)

Reference quantities at piece counting

10, 25, 50, 100 freely selectable

Weighing Units

ct, g, gn, lb, mo, oz, ozt,

tl (HK), tl (Singap. Malays), tl (Tw), pen

Electric Supply

230V/50 Hz (Euro)9V DC

230V/50 Hz

(Euro)24V AC

Rechargeable battery

Operation period 30 h

Loading time 10 h

Operating temperature Humidity of air

max. 80 % (not condensing)

Underfloor weighing

Clevis type eyelet, standard

Housing (B x D x H) mm

210 x 340 x 160 210 x 340 x 100 210 x 340 x 100

Windshield mm inside Ø 150, 60 high outside Ø 160, 70 high

no no no

Weighing plate (stainless steel)

Ø 16 cm Ø 16 cm Ø 16 cm

Weight kg (net)

4 kg 4 kg 4.5 kg

Interface

RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1338 15

KERN PLS 6200-2A PLS 6200-2DA

Weighing range (max)

6200 g 4200 g/6200 g

Readability (d)

0.01 g 0.01 g/0.1 g

Reproducibility

0.01 g 0.01 g/0.1 g

Linearity

± 0.03 g ± 0.02 g / 0.2 g

Stabilization time (typical)

2 sec. 2 sec.

Minimum unit weight at piece counting

> 50 mg > 50 mg

Warm-up time

4 hours 4 hours

Recommended adjustment weight, not added (class)

5 kg (E2) 5 kg (E2)

Reference quantities at piece counting

10, 25, 50, 100, freely selectable

Weighing Units

ct, g, gn, lb, mo, oz, ozt,

tl (HK), tl (Singap. Malays), tl (Tw), pen

Electric Supply

230V/50 Hz (Euro)

24V AC

230V/50 Hz (Euro)

9V DC

Operating temperature Humidity of air

max. 80 % (not condensing)

Underfloor weighing

Clevis type eyelet, standard

Housing (B x D x H) mm

210 x 340 x 100 210 x 340 x 100

Windshield mm no no Weighing plate

(stainless steel)

Ø 16 cm Ø 16 cm

Weight kg (net)

4.5 kg 4.5 kg

Interface

RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1338

KERN PLS 8000-2A

PLS 20000-1F

Weighing range (max)

8200 g 20 kg

Readability (d)

0.01 g 0.1 g

Reproducibility

0.01 g 0.1 g

Linearity

± 0.03 g ± 0.4 g

Stabilization time (typical)

2 sec. 3 sec.

Minimum unit weight at piece counting

> 50 mg > 500 mg

Warm-up time

4 Stunden 4 hours

Recommended adjustment weight, not added (class)

5 kg (E2) 20 kg (E2)

Reference quantities at piece counting

10, 25, 50, 100, freely selectable

Weighing Units

ct, g, gn, lb, mo, oz, ozt,

tl (HK), tl (Singap. Malays), tl (Tw), pen

Electric Supply

230V/50 Hz (Euro)

24V AC

230V/50 Hz (Euro)

9V DC

Operating temperature Humidity of air

max. 80 % (not condensing)

Underfloor weighing

Clevis type eyelet, standard

Housing (B x D x H) mm

210 x 340 x 100 210 x 340 x 100

Windshield mm no no Weighing plate

(stainless steel)

Ø 16 cm 200 x 175 mm

Weight kg (net)

4.75 kg 4 kg

Interface

RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1338 17

2 Explanation of graphical symbols

Note: follow the directions included in the attached document or Follow the Operating Instructions

3 Basic Information (General)

3.1 Proper use

The balance you purchased is intended to determine the weighing value of material

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 weighing. In the event that small quantities are removed or added to the material to be weighed, incorrect weighing results can be

e. (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 or damage 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.

www.kern-sohn.com with regard to

the monitoring of balance test substances and the test weights required for this. In calibrated (return to the national standard) fast and at moderate cost.

ALJ/ALS/PLJ/PLS-BA-e-1338

4 Basic Safety Precautions

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.

Versions in other languages are non-binding translations. The only binding version is the original document in German.

4.2 Personnel training

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

5 Transportation & Storage

5.1 Testing upon acceptance

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

ALJ/ALS/PLJ/PLS-BA-e-1338 19

5.2 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.

ALJ/ALS/PLJ/PLS-BA-e-1338

Models ALJ/ALS:

ALJ/ALS/PLJ/PLS-BA-e-1338 21

6 Unpacking, Setup and Commissioning

6.1 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:

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, vapors 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.

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 Unpacking / placing

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

ALJ/ALS/PLJ/PLS-BA-e-1338

6.2.1 Placing

Design layout of weighing balance:

Models ALS/ALJ Models PLS/PLJ, d = 1 mg

ALJ/ALS/PLJ/PLS-BA-e-1338 23

Models PLS/PLJ, d = 100 mg Models PLS/PLJ, d = 10 mg

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

ALJ/ALS/PLJ/PLS-BA-e-1338

Remove the transportation lock: On the left lower side of the balance replace the golden-coloured screw with the

silver-coloured one (see sticker).

6.2.2 Scope of delivery / serial accessories

Balance (See chpt. 6.2.1) Mains power supply Operating Manual

6.3 Appliance overview

6.3.1 Front side of the balance

1 Cover windshield 2 Bubble level 3 Windshield 4 LCD display 5 Function keys 6 Adjustable feet

+ 54 hidden pages

KERN ALJ, PLJ, ALS, PLS Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual