KERN ALJ, PLJ, ALS, PLS Operating Manual

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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

ALJ/ALS/PLJ/PLS-BA-e-1338 25

6.3.2 Back and bottom side of the balance

1. Weighing plate

2. RS232C interface

3. Foot screws

4. Mains adapter connection

5. Housing screws

(in models with four feet

first screw out the two rear feet)

6. Underfloor weighing device

2 3 1 4 5 6 5

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

6.4 Controls

6.4.1 Overview of display

6.4.2 Keyboard overview

Key Designation Short key pressing

longtime pressed button

until the acoustic signal gets mute

MENU button/

Call-up application

Select menu items

scroll forward

Call-up user menu Exit user menu Switch-over display

Arrow button

numerical input scroll backward

ON/OFF switch

Turn on/off Exit user menu

CAL button/

Adjustment Select menu items scroll backward

Arrow button

Numerical input scroll forward

PRINT button

Calculate weighing data via interface Confirm / store settings

Arrow button

Numerical input cipher selection

TARE button

Taring Zeroing

ALJ/ALS/PLJ/PLS-BA-e-1338 27

6.5 Connect and switch-on power supply

Before connecting the mains adapter check if the printed voltage value is the same as the local supply voltage. Only use KERN original mains adapter. Using other makes requires consent by KERN.

Plug-in mains adapter in mains adapter bushing of the balance and connect to

the mains.

The balance will carry out a self-test Then the balance is set into stand-by mode.

Press the ON/OFF key. When the zero display appears, the balance is ready for

operation. When weighing with internal adjustment weight, adjustment first occurs

Press the ON/OFF key anew. The balance is now in stand-by mode

For verified balances a warming-up time of 30 minutes must be observed. After connecting the mains adapter a countdown starts.

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

The rechargeable battery is charged via the delivered power supply.

The operating time of the rechargeable battery is about 30h; charging time until complete recharging ca. 10h.

In the menu you can activate the AUTO-OFF function time off], see chp. 9.8. According to menu settings, the balance switches automatically off in order to spare the battery.

When the balance is in battery mode the following symbols appear on the display:

Battery charge sufficient Battery very low. Connect mains adapter as soon as possible

to load the rechargeable battery.

Voltage has dropped below prescribed minimum. Connect mains adapter to load the rechargeable battery.

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

6.7 Connection of peripheral devices

Before connecting or disconnecting of additional devices (printer, PC) to the data interface, always disconnect the balance from the power supply. With your balance, only use accessories and peripheral devices by KERN, as they are ideally tuned to your balance.

6.8 Initial Commissioning

In order to obtain exact results with the electronic balances, your balance must have reached the operating temperature (see warming up time chap. 1). During this warming up time the balance must be connected to the power supply (mains, accumulator or battery). The accuracy of the balance depends on the local acceleration of gravity. Strictly observe hints in chapter Adjustment.

6.8.1 Stability display

If the display shows the stability display [ ] the balance is in a stable status. If the status is instable the [ ] display disappears.

6.8.2 Balance zero display

If an exact zero reading is not displayed on the balance in spite of the weighing dish being empty, press the TARE button and the balance will start resetting to zero [ O ] .

7 Adjustment

As the acceleration value due to gravity is not the same at every location on earth, each balance must be coordinated - in compliance with the underlying physical weighing principle - to the existing acceleration due to gravity at its place of location (only if the balance has not already been adjusted to the location in the factory). This adjustment process must be carried out for the first commissioning, after each change of location as well as in case of fluctuating environment temperature. To receive accurate measuring values it is also recommended to adjust the balance periodically in weighing operation.

Observe stable environmental conditions. A warming up time (see chapter 1)

is required for stabilization.

Ensure that there are no objects on the weighing plate.

ALJ/ALS/PLJ/PLS-BA-e-1338 29

7.1 Models with external weight (KERN ALS/PLS)

The adjustment is locked for verified balances.

7.1.1 Adjustment with recommended adjustment weight (factory setting)

Ensure that there are no objects on the weighing plate. Press the CAL key

Wait until the weighed value for the required adjustment weight appears

flashing.

During the flashing display put the required adjustment weight carefully in the

center of the weighing plate. The flashing display disappears.

After successful adjustment the balance automatically returns to weighing mode.

Take away adjustment weight

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

7.1.2 Adjustment with weights of other nominal values

Weights of different nominal values may be used for adjustment but are not optimal for technical measuring, possible adjustment points see table 1. Info about adjustment weights can be found on the Internet at: http://www.kernsohn.com

Ensure that there are no objects on the weighing plate. Press the CAL button

and keep it pressed until the acoustic signal gets mute.

During the flashing display put the adjustment weight carefully in the center of

the weighing plate. The flashing display disappears.

After successful adjustment the balance automatically returns to weighing mode.

Take away adjustment weight

An error message will be displayed in the event of an adjustment error or

incorrect adjustment weight. Wait until the balance is again in weighing mode

and repeat the adjustment procedure.

ALJ/ALS/PLJ/PLS-BA-e-1338 31

Model

Recommended

adjustment weight

(see chap. 7.1.1).

Other measurement-technically not optimal nominal values for adjustment (see chap. 7.1.2)

A-models

ALJ 160-4A ALJ 250-4A

ALS 160-4A 150g 100g ALS 250-4A 200g 100g

PLJ-720-3A PLJ 1200-3A PLJ 1200-3DA PLJ 6200-2A PLJ 6200-2DA PLJ 720-3AM PLJ 6200-2AM

PLS 510-3A

500g 100g, 200g, 300g, 400g

PLS 720-3A 600g

100g, 200g, 300g, 400g, 500g

PLS 1200-3A 1000g

PLS 1200-3DA 1000g PLS 4200-2A

4000g

1000g, 2000g, 3000g

PLS 6200-2A

5000g

1000g, 2000g, 3000g, 4000g, 6000g

PLS 6200-2DA 5000g

1000g, 2000g, 3000g, 4000g, 6000g

F-models

PLJ 310-3F PLJ 420-3F PLJ 3100-2F PLJ 4200-2F

PLS 310-3F 300g 100g, 200g PLS 420-3F PLS 3100-2F 3000g 1000g, 2000g PLS 4200-2F PLS 20000-1F 20000g 10 kg

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

7.2 Models with internal weight (KERN ALJ/PLJ)

For non verified balances four adjustment possibilities are available in the menu.

Menu settings In weighing mode press the MENU button and keep it pressed until

the acoustic signal gets mute.

displayed.

Press MENU

PRINT button.

Use the MENU key to choose between the following settings:

AUT-CAL

Automatic adjustment with internal weight. Factory settings of models with type approval.

I-CAL

Adjustment with internal weight after having pressed CAL; not available for models with settings appropriate for verification.

E-CAL

Adjustment with external weight not available for models with settings appropriate for verification.

TEC-CAL not documented

Take over selection using the PRINT button.

The balance returns to menu.

To finish the menu press the MENU button and keep it pressed until

the acoustic signal gets mute. The balance returns automatically into weighing mode.

AUT-CAL

Factory setting of verified balances

With activated AUT-CAL function the internal adjustment is automatically started when the balance

after the weighing balance was disconnected from

the mains after pressing ON/OFF in stand-by mode after a temperature change of 1.5 °C

with non loaded weighing plate / zero display after a time interval of 20 min

with non loaded weighing plate / zero display

The automatic adjustment function is always enabled. You can start adjustment at any time by pressing the CAL-key manually.

ALJ/ALS/PLJ/PLS-BA-e-1338 33

I-CAL When the I-CAL function is activated, the internal adjustment is

started only by pressing the CAL button. Before pressing CAL ensure that there are no objects on the weighing plate.

E-CAL

At the models with internal adjustment weight the adjustment with external weight is not recommended. Procedure see chapter 7.1.

7.2.1 Adjustment models PLJ-M

Menu settings In weighing mode press the MENU button and keep it pressed until

the acoustic signal gets mute.

Press MENU

PRINT button.

Use the MENU key to choose between the following settings:

AUT-CAL

Automatic adjustment with internal weight. Factory setting for models with type approval.

Take over selection using the PRINT button.

The balance returns to menu.

To finish the menu press the MENU button and keep it pressed until

the acoustic signal gets mute. The balance returns automatically into weighing mode.

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

7.2.2 Overwrite internal adjustment weight

(Models with settings not appropriate for verification only)

Overwriting is restricted to specialist staff possessing well acquainted with the workings of weighing scales.

Press the MENU button and keep it pressed until the acoustic signal gets mute.

Press the MENU appears Operate the PRINT key Press the MENU TEC- appears

Press the PRINT button and keep it pressed until the acoustic signal gets mute.

Press the MENU button and keep it pressed until the acoustic signal gets mute. The

balance changes automatically into weighing mode Ensure that there is no load on the weighing plate Press the CAL key

Wait until the exact value of the adjustment weight will be shown flashing

(Example)

Place the displayed adjusting weight on the weighing plate.

The flashing display extinguishes and the balance changes into weighing mode.

Remove adjustment weight from weighing plate Press the PRINT button and keep it pressed until the acoustic signal gets mute.

The calibrating process is started During this tEc MEM

After having automatically saved the value of the internal adjustment weight, the balance will return into weighing mode.

Carry out the adjustment process as described in chapter 7.2

ALJ/ALS/PLJ/PLS-BA-e-1338 35

7.3 Verification

General introduction: According to EU directive 90/384/EEC balances must be verified if they are used as

follows (legally controlled area):

a) For commercial transactions if the price of goods is determined by weighing.

b) For the production of medicines in pharmacies as well as for analyses in the

medical and pharmaceutical laboratory. c) For official purposes. d) For manufacturing final packages.

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

An EU type approval exists for balances described in their technical data as verifiable. If a balance is used where obligation to verify exists as described above, it must verified and re-verified in regular intervals. Re-verification of a balance is carried out according to the respective national regulations. The validity for verification of balances in Germany is e.g. 2 years. The legal regulation of the country where the balance is used must be observed! After verification the balance is sealed at the indicated positions.

Verification of the balance is invalid without the "seal".

Balances with obligation to verify must be taken out of operation if:

The weighing result of the balance is outside the error limit.

Therefore, in regular intervals load balance with known test weight (ca. 1/3 of the max. load) and compare with displayed value.

The reverification deadline has been exceeded.

Position of the seal mark (models PLJ)

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

8 Basic Operation

Start-up

In stand-by mode (see chap. 6.5) press ON/OFF button. The balance is ready for weighing when the weight display appears.

For models PLJ-M

balance requires 30 minutes to reach stabilisation. Afterwards it will automatically change into weighing mode at which point it will be ready for operation.

Switching Off

Press ON/OFF button, the balance returns to the stand-by mode (see chap. 6.5).

Simple weighing

Place goods to be weighed on balance Wait until the stability display appears [ ]

Read weighing result.

Taring

Place the weighing box and press the TARE button.

After standstill control the zero display appears.

The weight of the container is now internally saved.

Weigh the material, the net weight will be indicated.

The weight of the weighing container will be displayed as a minus number after removing the weighing container.

The tare weight is saved until it is deleted. Remove the load from

the balance and press the TARE - until the zero display appears.

The tare procedure can be repeated as many times as necessary, for example with initial weighing of several components for a mix (add-on weighing). The limit is reached when the total weighing range capacity is full.

ALJ/ALS/PLJ/PLS-BA-e-1338 37

8.1 Underfloor weighing

Objects unsuitable for placing on the weighing scale due to size or shape may be weighed with the help of the flush-mounted platform. Proceed as follows:

Switch off the balance Open closing cover (1) at the balance bottom.

Suspend hook for underfloor weighing carefully and completely. Place weighing balance over an opening. Attach load to hook and carry out weighing procedure.

Fig. 1: Setup of balance for underfloor weighing

CAUTION

Always ensure that all suspended objects are stable enough to hold

the desired goods to be weighed safely (danger of breaking).

Never suspend loads that exceed the stated maximum load (max)

(danger of breaking)

Always ensure that there are no persons, animals or objects that

might be damaged underneath the load.

After completing the underfloor weighing the opening on the bottom

of the balance must always be closed (dust protection).

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

9 User menu

The settings of the balance can be changed in the user menu. This way, the balance can be adjusted to individual weighing requirements. By the factory the user menu has been set in a way that normally no more changes must be made, only at special conditions of use.

Navigation in the menu Access to menu In weighing mode press the MENU

button and keep it pressed

until the acoustic signal gets mute. is displayed.

How to select menu items

Using the MENU button the individual menu items can be selected one after the other.

Scroll forward using MENU button Scroll backward using CAL button

Change settings Acknowledge selected menu item using PRINT button, the

current setting is displayed. Each time the arrow buttons are pressed the next setting will be displayed.

Scroll forward using MENU button Scroll backward using CAL button

Save settings Take over selection using the PRINT button.

Weighing balance returns to menu. Either make more settings in the menu or go back to menu mode as follows.

Exit menu/ back to weighing mode

Press the MENU button and keep it pressed until the acoustic signal gets mute. The balance returns automatically into weighing mode.

ALJ/ALS/PLJ/PLS-BA-e-1338 39

Menu overview

Menu item Display Selection

Description

Weighing unit (see chap. 9.1)

Units

Gram

Gramm

* Carat

Carat

* Ounce

Unze

* Pound

Pound

* PEnn

Pennyweight

* OuncEtr

Troy Unze

* GrAin

Grain

* tAEL Hon

Tael Hongkong

* tAEL SGP

Tael Singapore

* tAEL roc

Tael R.O.C.

* Momme

Momme

Data output type (see chap. 9.2)

PC-Prtr

PC cont Continuous output

PC CMd

Manual issue after pressing the

PRINT button

tlP50 not documented

Print not documented

Baudrate (see chap. 9.3)

baud rt

br 1200 br 2400 br 4800 br 9600

Aukto zero (see chap. 9.4)

Auto 0

Au0 OFF Auto Zero switched off

Au0 1 Auto Zero range ± ½ digit Au0 2 Auto Zero range ± 3 digits Au0 3 Auto Zero range ± 7 digits

Au0 3E

Auto Zero range ± 7 digits in the

whole weighing range

Filter (see chap. 9.5)

Filter

Filt 1 Setting for dispensing Filt 2

Sensitive and fast, very quiet set-up location

Filt 3

Robust but slow, busy set-up locatio

Standstill control display (see chap. 9.6)

Stabil

Stab 1

Standstill control fast very quiet set-up location

Stab 2

Standstill control fast + exact quiet set-up location

Stab 3

Standstill control exact very set-up location

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

Contrast of the display (see chap. 9.7)

Contr 1-15 Select contrast

Backlight (see chap. 9.8) Blt

on Backlight on off Backlight off

Auto

Backlight

automatically switched

off 3 seconds after achieving

stable weighing value. Changes

in weight or pressing of keys will

automatically result in backlight switching on again.

AUTO OFF in stand-by mode (see chap. 9.9)

time off

disab AUTO-OFF off

2 Min

AUTO-OFF after 2 minutes without changing the weight

5 Min

AUTO-OFF after 5 minutes without changing the weight

15 Min

AUTO-OFF after 15 minutes without changing the weight

Adjustment (see chap. 7)

Calib

*E-Cal

Adjustment with external weight,

locked for verifiable units

*Tec Cal not documented

*Aut Cal

Automatic adjustment with internal weight.

*I-Cal

Adjustment with internal weight after having pressed CAL, locked in verifiable units.

End

* = not available in all models

ALJ/ALS/PLJ/PLS-BA-e-1338 41

Menu overview models PLJ-M:

Menu item Display Selection

Description

Weighing unit (see chap. 9.1)

Units

Gram

Gramm

* Carat

Carat

* Ounce

Unze

* Pound

Pound

* PEnn

Pennyweight

* OuncEtr

Troy Unze

* GrAin

Grain

* tAEL Hon

Tael Hongkong

* tAEL SGP

Tael Singapore

* tAEL roc

Tael R.O.C.

* Momme

Momme

Data output type (see chap. 9.2)

PC-Prtr

PC cont Continuous output

PC CMd

Manual issue after pressing the

PRINT button

tlP50 not documented

Print not documented

Baudrate (see chap. 9.3)

baud rt

br 1200 br 2400 br 4800 br 9600

Aukto zero (see chap. 9.4)

Auto 0

Au0 OFF Auto Zero switched off

Au0 1 Auto Zero range ± ½ digit

Filter (see chap. 9.5)

Filter

Filt 1 Setting for dispensing Filt 2

Sensitive and fast, very quiet set-up location

Filt 3

Robust but slow, busy set-up locatio

Standstill control display (see chap. 9.6)

Stabil

Stab 1

Standstill control fast very quiet set-up location

Stab 2

Standstill control fast + exact quiet set-up location

Stab 3

Standstill control exact very set-up location

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

Contrast of the display (see chap. 9.7)

Contr 1-15 Select contrast

Backlight (see chap. 9.8) Blt

on Backlight on off Backlight off

Auto

Backlight

automatically switched

off 3 seconds after achieving

stable weighing value. Changes

in weight or pressing of keys will

automatically result in backlight switching on again.

AUTO OFF in stand-by mode (see chap. 9.9)

time off

disab AUTO-OFF off

2 Min

AUTO-OFF after 2 minutes without changing the weight

5 Min

AUTO-OFF after 5 minutes without changing the weight

15 Min

AUTO-OFF after 15 minutes without changing the weight

Adjustment (see chap. 7)

Calib

*Aut Cal

Automatic adjustment with internal weight.

End

* = not available in all models

ALJ/ALS/PLJ/PLS-BA-e-1338 43

9.1 Weighing unit

According to requirements the balance can be switched-over into different units (in verified balances specifications). Selected weighing unit will be retained even after disconnection from the mains.

In weighing mode press the MENU

button and keep it pressed until the acoustic

signal gets mute. The

Acknowledge using PRINT button, the current setting is displayed.

Press the arrow keys to select desired setting.

Scroll forward using MENU button Scroll backward using CAL button

Take over selection using the PRINT button.

Weighing balance returns to menu. Either make more settings in the menu or

back to weighing mode as follows.

Press the MENU button and keep it pressed until the acoustic signal gets mute.

The balance returns automatically into weighing mode.

Symbol Weighing unit Conversion

factor 1g =

Gram GRAMS 1.

* Carat CARATS 5. * Ounce OUNCE 0.035273962 * Pound POUNDS 0.0022046226

* PEnn PENNYWEIGHTS 0.643014931

* OuncEtr OUNCE TROY 0.032150747

* GrAin GRAIN 15.43235835

* tAEL Hon HONG KONG TAEL

0.02671725

* tAEL SGP SYNGAPORE TAEL

0.02646063

* tAEL roc R.O.C. TAEL 0.02666666

* Momme MOMME 0.2667

* not available in all models

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

9.2 Data output type

In weighing mode press the MENU

button and keep it pressed until the acoustic

signal gets mute.

Press MENU button

Acknowledge using PRINT button, the current setting is displayed. Press the arrow keys to select desired setting.

Scroll forward using MENU button Scroll backward using CAL button

= Continuous output

= Manual issue after pressing the PRINT button

= not documented

Take over selection using the PRINT button.

Weighing balance returns to menu. Either make more

settings in the menu or go

back to weighing mode as follows.

Press the MENU button and keep it pressed until the acoustic signal gets mute.

The balance returns automatically into weighing mode.

ALJ/ALS/PLJ/PLS-BA-e-1338 45

9.3 Baud rate

In weighing mode press the MENU

button and keep it pressed until the acoustic

signal gets mute.

Press MENU button repeatedly

Acknowledge using PRINT button, the current setting is displayed. Press the arrow keys to select desired setting.

Scroll forward using MENU button Scroll backward using CAL button

Take over selection using the PRINT button.

Weighing balance returns to menu. Either make more settings in the menu or go

back to weighing mode as follows.

Press the MENU button and keep it pressed until the acoustic signal gets mute.

The balance returns automatically into weighing mode.

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

9.4 Auto Zero

Under this menu item the automatic zero point correction can be switched on or off. In switched-on-state the zero point is automatically corrected at drift or when dirty.

Information: In the event that small quantities are removed or added to the material to be

ced on the balance, evaporating processes). When apportioning involves small variations of weight, it is advisable to switch off this function.

In weighing mode press the MENU

button and keep it pressed until the acoustic

signal gets mute.

Press MENU button repeatedly

Acknowledge using PRINT button, the current setting is displayed.

ALJ/ALS/PLJ/PLS-BA-e-1338 47

Press the arrow keys to select desired setting.

Scroll forward using MENU button Scroll backward using CAL button

Au0 OFF = Auto Zero switched off Au0 1 = Auto Zero range ± ½ digit Au0 2 = Auto Zero range ± 3 digits Au0 3 = Auto Zero range ± 7 digits Au0 3E = Auto Zero range ± 7 digits in the whole weighing range

Take over selection using the PRINT button.

Weighing balance returns to menu. Either make more settings in the menu or go

back to weighing mode as follows.

Press the MENU button and keep it pressed until the acoustic signal gets mute.

The balance returns automatically into weighing mode.

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

9.5 Filter

This menu item allows the balance to be set according to specific ambient conditions and measuring purposes.

In weighing mode press the MENU

button and keep it pressed until the acoustic

signal gets mute.

Press MENU button repeatedly

Acknowledge using PRINT button, the current setting is displayed. Press the arrow keys to select desired setting.

Scroll forward using MENU button Scroll backward using CAL button

FILTER 1: Setting for dispensing FILTER 2: Sensitive and fast, very quiet set-up location. FILTER 3: Robust but slow, busy set-up location.

Take over selection using the PRINT button.

Weighing balance returns to menu. Either make more settings in the menu or go

back to weighing mode as follows.

Press the MENU button and keep it pressed until the acoustic signal gets mute.

The balance returns automatically into weighing mode.

ALJ/ALS/PLJ/PLS-BA-e-1338 49

9.6 Standstill control display

In weighing mode press the MENU

button and keep it pressed until the acoustic

signal gets mute.

Press MENU button repeatedly

Acknowledge using PRINT button, the current setting is displayed. Press the arrow keys to select desired setting.

Scroll forward using MENU button Scroll backward using CAL button

STAB 1: Standstill control fast very quiet set-up location STAB 2: Standstill control fast + exact quiet set-up location STAB 3: Standstill control exact very set-up location.

Take over selection using the PRINT button.

Weighing balance returns to menu.

Either make more settings in the menu or go

back to weighing mode as follows.

Press the MENU button and keep it pressed until the acoustic signal gets mute.

The balance returns automatically into weighing mode.

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

9.7 Setting the contrast of the display

To set the contrast of the display you can choose between 15 values.

In weighing mode press the MENU button and keep it pressed until the acoustic

signal gets mute.

Press MENU button repeatedly

Acknowledge using PRINT button, the current setting is displayed. Press the arrow keys to select desired setting.

Scroll forward using MENU button Scroll backward using CAL button

01: small contrast 08: medium contrast 15: high contrast

Take over selection using the PRINT button.

Weighing balance returns to menu.

Either make more settings in the menu or go

back to weighing mode as follows.

Press the MENU button and keep it pressed until the acoustic signal gets mute.

The balance returns automatically into weighing mode.

ALJ/ALS/PLJ/PLS-BA-e-1338 51

9.8 Display background illumination

In weighing mode press the MENU

button and keep it pressed until the acoustic

signal gets mute.

Press MENU button repeatedly

Acknowledge using PRINT button, the current setting is displayed. Press the arrow keys to select desired setting.

Scroll forward using MENU button Scroll backward using CAL button

ON Background illumination on OFF Background illumination off Auto Backlighting automatically switched off 3 seconds after achieving stable

weighing value. Changes in weight or pressing of keys will automatically result in backlight switching on again.

Take over selection using the PRINT button.

Weighing balance returns to menu. Either make more settings in the

menu or go

back to weighing mode as follows.

Press the MENU button and keep it pressed until the acoustic signal gets mute.

The balance returns automatically into weighing mode.

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

9.9 Automatic switch-

in stand-by mode

In weighing mode press the MENU

button and keep it pressed until the acoustic

signal gets mute.

Press MENU button repeatedly

Acknowledge using PRINT button, the current setting is displayed. Press the arrow keys to select desired setting.

Scroll forward using MENU button Scroll backward using CAL button

disab = AUTO-OFF switched off 2 Min = AUTO-OFF after 2 minutes without changing the weight 5 Min = AUTO-OFF after 5 minutes without changing the weight

15 Min = AUTO-OFF after 15 minutes without changing the weight

Take over selection using the PRINT button.

Weighing balance returns to menu. Either make more settings in the menu or go

back to weighing mode as follows.

Press the MENU button and keep it pressed until the acoustic signal gets mute.

The balance returns automatically into weighing mode.

ALJ/ALS/PLJ/PLS-BA-e-1338 53

10 User menu

The following operating modes may be enabled/disabled in the user menu:

Count

Parts counting

Dens

Density determination of solids/liquids

Add

Adding function

HoL

Checkweighing

Perc

Percent determination

Anim

Animal weighing function

M Load

Peak value function

End

Navigation in the menu Access to menu

In weighing mode press MENU displayed.

How to select menu items

Using the MENU button the individual menu items can be selected one after the other.

Scroll forward using MENU button Scroll backward using CAL button

Change settings

Acknowledge selected menu item using PRINT button, the current setting is displayed. Each time the arrow buttons are pressed the next setting will be displayed.

Scroll forward using MENU button Scroll backward using CAL button

Save settings

Take over selection using the PRINT button. Weighin

g balance returns to menu. Either make more settings in the

menu or go back to menu mode as follows.

Exit menu/ back to weighing mode

Press the MENU

button and keep it pressed until the acoustic signal

gets mute. The balance returns automatically into weighing mode.

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

10.1 Parts counting

Before the balance can count parts, it must know the average part weight (i.e. reference). Proceed by putting on a certain number of the parts to be counted. The balance determines the total weight and divides it by the number of parts, the socalled reference quantity. Counting is then carried out on the basis of the calculated average piece weight. As a rule:

The higher the reference quantity the higher the counting exactness.

In weighing mode press MENU button. The fi

Acknowledge using PRINT button, the current reference quantity is displayed.

Using the arrow buttons select reference quantity (10, 25, 50, 100 or

manual = numerical input of the reference weight, see chap. 10.1.3). Scroll forward using MENU button Scroll backward using CAL button

If using a weighing container, put this before pressing the PRINT button. The

Confirm selected reference number of items by pressing the PRINT button.

Place as many pieces to add-up as required by the set reference piece number. Acknowledge using PRINT button and wait for standstill control.

After successful reference determination the current quantity is displayed.

Remove reference weight. The balance is now in parts counting mode counting

all units on the weighing plate.

ALJ/ALS/PLJ/PLS-BA-e-1338 55

If it was impossible to determine a reference due to instable goods to be weighed or an insufficient reference weight, the following display will appear during reference calculation.

ERR04 = smallest counting weight not achieved Add SMP=if the placed quantity for a correct reference determination

is too small, more parts must be placed as follows.

Place more parts, but at least the double quantity. Press the PRINT button, the reference weight is calculated anew.

The placed quantity is always too small, add more parts and acknowledge using the PRINT button. Repeat the procedure until the piece counter display appears.

Placed quantity sufficient for reference determination. Remove reference weight. The balance is now in parts counting mode counting all units on the weighing plate.

Return to weighing mode

Press the ON/OFF key.

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

10.1.1 Switching over between quantity and weight display

Place load on pan and read the number of pieces.

Press MENU button, the total weight of the placed parts is displayed.

Press the MENU button and keep it pressed until the acoustic signal gets mute,

the average weight of a single piece is displayed.

Back to quantity display press MENU button again.

10.1.2 Automatic reference optimization

In order to improve the counting exactness, the reference can be optimised by adding more pieces. At every reference optimisation, the reference weight is calculated anew. As the additional pieces increase the base for the calculation, the reference also becomes more exact.

Leave the piece number on the weighing plate after setting the reference weight Duplicate the number of pieces on the weighing plate and wait until the acoustic

signal sounds. The reference weight is calculated anew.

Either repeat the reference optimisation by adding more pieces (max. 255 pieces)

or start the counting process.

The automatic reference optimisation is not active when the reference weight is entered numerically.

ALJ/ALS/PLJ/PLS-BA-e-1338 57

10.1.3 Numeric entering of the reference weight

If you know the reference weight/piece you can enter this via the numeric keyboard.

In weighing mode press MENU

Acknowledge using PRINT button, the current reference quantity is displayed.

Press the arrow buttons to select the parameters manually.

Acknowledge using PRINT button Press the arrow buttons to enter the known reference weight. If using a weighing container, put this before pressing the PRINT button.

Place load on pan and read the number of pieces.

Press MENU button, the total weight of the placed parts is displayed.

Back to quantity display press MENU button again.

Return to weighing mode

Press the ON/OFF key

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

10.2 Density determination (Hydrostatic weighing)

Density is the relationship of weight [g] : volume [cm3]. The weight is determined by weighing the sample in air. The volume results from the ascending force [g] of the sample dipped in a liquid. The density [g/cm3] of that liquid is known (principle of Archimedes). The density is determined with help of the underfloor weighing device.

10.2.1 Density determination of solids

Prepare the balance as follows:

Switch off the balance Remove the weighing pan and carefully turn over the weighing balance. Screw-in hook for underfloor weighing (option) Place weighing balance over an opening Hook-in the sample support Fill measuring liquid in a vessel e.g. beaker) and temper it.

In weighing mode press MENU

Press MENU button

Acknowledge using PRINT button, the current setting is displayed. Using MENU button select

Confirm by pressing the PRINT button.

Use the arrow buttons to enter density of the measuring fluid. Confirm input by pressing the PRINT button.

ALJ/ALS/PLJ/PLS-BA-e-1338 59

Confirm by pressing the PRINT button. If necessary, tare and put the sample. Wait until the weight display of the weighing balance has become stable and

then press the PRINT button.

appears.

Acknowledge using PRINT button Immerse sample holder and tare by pressing the TARE-key Place sample and immerse it

Make sure that the sample holder does not touch the beaker.

Wait until the weight display of the weighing balance has become stable and

then press the PRINT button.

The density of the sample is shown

Return to weighing mode

Press the ON/OFF key

or use the MENU button to start a new measuring cycle.

-----

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

10.2.2 Determining density of liquids

Fill sample liquid into a vessel, e.g. a pitcher. Heat sample liquid until temperature is constant. Prepare a glass sinker with known density

In weighing mode press MENU

Press MENU button

Acknowledge using PRINT button, the current setting is displayed. Using MENU button select

Confirm by pressing the PRINT button.

Use the arrow buttons to enter density of the glass sinker. Confirm input by pressing the PRINT button.

ALJ/ALS/PLJ/PLS-BA-e-1338 61

Confirm by pressing the PRINT button. Tare if necessary and hook on the glass sinker centrically. Wait until the weight display of the weighing balance has become stable and

then press the PRINT button.

appears.

Acknowledge using PRINT button Tare if necessary and immerse the sinker into the measuring fluid Wait until the weight display of the weighing balance has become stable and

then press the PRINT button.

The density of the sample fluid is shown

Return to weighing mode

Press the ON/OFF key

or use the MENU button to start a new measuring cycle.

-----

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

10.3 Adding function

This function can be used to automatically add any number of single weighings to a total.

Press repeatedly the MENU

displayed.

Confirm by pressing the PRINT button

The balance will tare automatically and then will change to the zero display

Deposit weight A.

(Example)

Confirm by pressing the PRINT button The displayed value is added into the total adding memory, after that the balance will automatically tare anew and change over to the zero display

Put on weight B.

(Example)

Confirm by pressing the PRINT button

ALJ/ALS/PLJ/PLS-BA-e-1338 63

The displayed value is added into the total adding memory, after that the balance will automatically tare anew and change over to the zero display

Proceed in the same manner with the other weights

To print out the total sum of the single weighings, press the CAL button

Press the MENU button, the sum of all single weighings will be displayed.

Press the MENU button again, the number of weighings will be displayed

Leave the function via the ON/OFF button and return to the weighing mode

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

10.4 Checkweighing

An upper and a lower limit value can be established to ensure that the weighed goods are exactly within the established tolerance limits. The display [L], [ok] or [H] shows whether the goods to be weighed are within the two tolerance limits.

Goods to be weighed below tolerance limit

Goods to be weighed within tolerance range

Goods to be weighed above tolerance limit

The indetermination if the goods to be weighed are within the tolerance limits, can additionally be given by an acoustic signal.

In weighing mode press MENU

Press MENU button repeatedly

Confirm using the PRINT button, the display to enter the lower tolerance limit

appears.

Enter the lower limit value using the arrow buttons

Confirm using the PRINT button, the display to enter the upper tolerance limit

appears.

Enter the upper limit value using the arrow buttons

Confirm using the PRINT button, the display to adjust the signal tone appears.

Select the desired settings by pressing the MENU button

ALJ/ALS/PLJ/PLS-BA-e-1338 65

Beep off Signal tone switched off Beep on Signal tone on, if weighed goods are within tolerance range

Confirm by pressing the PRINT button.

The balance is now in checkweighing mode.

Put on goods to be weighed, tolerance control is started

Return to weighing mode

Press the ON/OFF key

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

10.5 Percent determination

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

10.5.1 Entering the reference weight by weighing

In weighing mode press MENU

Press MENU button repeatedly

Acknowledge using PRINT button, the current setting is displayed.

Using MENU button select

If using a weighing container, put this before pressing the PRINT button. The

Put on reference weight (=100 %)

Wait until the weight display of the balance has become stable and then press

the PRINT button. The weight is adopted as reference (100%).

Remove reference weight. From now the balance is in percent determining

mode.

Place goods to be weighed on balance.

The weight of the sample is displayed in percentage in terms of the reference weight.

ALJ/ALS/PLJ/PLS-BA-e-1338 67

10.5.2 Numeric entering of the reference weight

In weighing mode press MENU

Press MENU button repeatedly

Acknowledge using PRINT button, the current setting is displayed.

Using MENU button select

Confirm using the PRINT button, the display to enter the reference weight

appears.

Press the arrow buttons to enter the reference weight (100%).

Confirm input by pressing the PRINT

button. From now the balance is in percent

determining mode.

Place goods to be weighed on balance.

The weight of the sample is displayed in percentage in terms of the reference weight.

Return to weighing mode

Press the ON/OFF key

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

10.6 Animal weighing function

The animal weighing function can be applied for busy weighings. During a defined period the mean value of the weighing results is formed. The more unquiet the weighed item, the longer the period should be selected.

In weighing mode press MENU button.

Press MENU button repeatedly

Acknowledge using PRINT button, the current setting is displayed.

Press the arrow keys to select desired setting.

Scroll forward using MENU button Scroll backward using CAL button

(Example)

Confirm by pressing the PRINT button

Tare the balance if necessary

Put the weighing good (animal) on the weighing plate and press the PRINT

button.

The average value of the weighing results is displayed and remains displayed on

the screen.

In order to carry out an other measurement, press the ON/OFF button 1x

Return to weighing mode:

Press the ON/OFF key 2x

ALJ/ALS/PLJ/PLS-BA-e-1338 69

10.7 Peak value function

This function displays the highest load value (peak value) of a weighing. The peak value remains in the display until it will be deleted.

In weighing mode press MENU

Press MENU button repeatedly

Confirm using PRINT -

displayed. From here the balance is in peak value mode, where

Load weighing plate. The maximum load value is displayed.

The peak value remains in the display until the TARE button is pressed. Then

the balance is ready for further measurements.

Return to weighing mode

Press the ON/OFF key

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

RS232C

11 Data output RS 232C

11.1 Technical Data

8-bit ASCII Code 8 data bits, 1 stop bit, no parity bit Baud rate optional from 1200 - 9600 Baud For operation with interface faultless operation is only ensured with the correct KERN interface cable (max. 2m)

11.2 Pin allocation of balance output plug

Pin 2 Tx Signal Pin 3 Rx Signal Pin 5 GND

ALJ/ALS/PLJ/PLS-BA-e-1338 71

11.3 Interface

Balance PC 25-pole

Balance PC 9-pole

Balance - printer

11.4 Data transfer

The data set consists of the following 14 characters:

1. Character sign -/ blank (weighing value) 2-9. Character weight or other data 10-12. Character weighing unit

13. Character stability display

14. Character carriage return

15. Character line feed

Balance

2 7 2 3 5

Balance

3 5 2 3 5

Data input Busy Signal

GND

4 5

Balance

Printer

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

11.5 Format for data transmission

At stable weight the format is transferred after pressing the PRINT button.

Weighing mode (continuous output and remote control command)

1° 2° 3° 4° 5° 6° 7° 8°

9°

10° 11° 12° 13° 14° 15°r

Character

Weight Weighing unit

Stability

Density determination (only remote control command)

1°

2° 3° 4° 5° 6° 7° 8° 9°

10° 11° 12° 13° 14° 15°

16° 17°

Density

Blank

Weighing unit CR LF

Counting (only remote control command) Number of pieces

1°.

2° 3° 4° 5° 6° 7° 8° 9°

10° 11° 12° 13° 14° 15° 16°

Pcs : Blank

Quantity

Weight of placed pieces

1°. 2° 3° 4° 5° 6° 7° 8° 9° 10° 11° 12° 13° 14° 15° 16° 17° 18° 19° 20°

Weight :

space

Measuring Value

space g

space S

Average parts weight

1°. 2° 3° 4° 5° 6° 7° 8° 9° 10° 11° 12° 13° 14° 15° 16° 17° 18°

PMU

average piece

weight

Blank Measuring Value

space g

ALJ/ALS/PLJ/PLS-BA-e-1338 73

Percent determination (only remote control command) Percent value

1° 2° 3° 4° 5° 6° 7° 8° 9° 10° 11° 12° 13° 14° 15° 16° 17° 18°

Percent .

Blank Percent

Blan

Weight value

1°. 2° 3° 4° 5° 6° 7° 8° 9° 10° 11° 12° 13° 14° 15° 16° 17° 18°

Weight Blank

Weight value

Blank

Animal weighing (only remote control command) Time

1° 2° 3° 4° 5° 6° 7° 8° 9° 10° 11° 12° 13° 14° 15° 16° 17° 18°

Time

Blan

Blank

Time value

Sec.

Blank

Average value

1°. 2° 3° 4° 5° 6° 7° 8° 9° 10° 11° 12° 13° 14° 15° 16° 17° 18°

Average . =

Blank

Average Weight value

Blank

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

11.6 Remote control instructions

Instruction: Function

Taring

Adjustment

Enter

H4D Menu

ON/OFF

11.7 Printer mode

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

Use a suitable cable to connect the weighing balance to the interface of the

printer. Faultless operation requires an adequate KERN interface cable.

The Baud rates of balance and printer must agree, see chap. 9.3.

Printout examples: Weighing mode/peak value function

Density determination

Parts counting

PCS Number of pieces Weight Weight of placed pieces PMU Average parts weight

Pcs 100 Weight: 300.000 g PMU: 3.000 g

d= 2.80066 g/cm3d

ALJ/ALS/PLJ/PLS-BA-e-1338 75

Percent determination

Perc Display value in [%] Weight Display value in [g]

Animal weighing mode

Add-up mode

1. 14.156 g

2. 18.226 g

S= 32.382 g

Time 6 Sec Ave.:

59.446 g

Perc. 20 % Weight: 30.000 g

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

12 Error messages

ERR01

Weight value instable or zeroing not possible. Check the environmental conditions.

ERR02 Adjustment error, e.g. environmental conditions instable ERR03 Adjustment error e.g. incorrect adjustment weight} ERR04 Piece weight too small/instable ERR05

Data transfer not possible, as weighing value is instable.

Check

the environmental conditions.

ERR06

Weighing value in density determining mode instable. Check the environmental conditions.

ERR07

Incorrect data reading

ERR08 Error at internal adjustment

UNLOAD

Weighing range not achieved. Check position of the weighing plate

CAL But Adjust balance

Weighing range exceeded, placed load exceeds the capacity of

the balance. Unload the balance.

Weighing range not reached, e.g. weighing plate not in place

13 Service, maintenance, disposal

13.1 Cleaning

Before cleaning, please disconnect the appliance from the operating voltage. Please do not use aggressive cleaning agents (solvents or similar agents), but a

cloth dampened with mild soap suds. Ensure that no liquid penetrates into the device and wipe with a dry soft cloth. Loose residue sample/powder can be removed carefully with a brush or manual vacuum cleaner.

Spilled weighing goods must be removed immediately.

13.2 Service, maintenance

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

13.3 Disposal

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

ALJ/ALS/PLJ/PLS-BA-e-1338 77

14 Instant help

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

Help:

Fault Possible cause

The displayed weight does not glow.

The balance is not switched on. The mains supply connection has been

interrupted

(mains cable not plugged in/faulty).

Power supply interrupted.

(Rechargeable) batteries are inserted incorrectly or

empty

No (rechargeable) batteries inserted.

The displayed weight is permanently changing

Draught/air movement Table/floor vibrations

Weighing plate has contact with other objects. Electromagnetic fields / static charging (choose

different location/switch off interfering device if possible)

The weighing result is obviously incorrect

The display of the balance is not at zero Adjustment is no longer correct. Great fluctuations in temperature. Warm-up time was ignored. Electromagnetic fields / static charging (choose

different location/switch off interfering device if possible)

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

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

15 Declaration of Conformity

KERN & Sohn GmbH

D-72322 Balingen-Frommern Postfach 4052 E-Mail: info@kern-sohn.de

Tel: 0049-[0]7433- 9933-0 Fax: 0049-[0]7433-9933-149 Internet: www.kern-sohn.de

Declaration of Conformity

EC-Konformitätserklärung EC-Declaration of -Conformity EC- Déclaration de conformité EC-Declaración de Conformidad EC-Dichiarazione di conformità EC-Conformiteitverklaring EC- Declaração de conformidade EC- EC-Deklaracja zgodno ci EC-

Konformitätserklärung

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

mit den nachstehenden Normen übereinstimmt.

Declaration of conformity

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

with the following standards.

shode

je v

souladu

Declaración de

conformidad

Manifestamos en la presente que el producto al que se refiere esta

declaración está de acuerdo con las normas siguientes

Déclaration de conformité

Nous déclarons avec cela

responsabilité que le produit, auquel se rapporte la

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

Dichiarazione di

conformitá

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

riferisce è conforme alle norme di seguito citate.

Conformiteitverklaring

Wij verklaren hiermede dat het product, waarop deze verklaring betrekking

heeft, met de hierna vermelde normen overeenstemt.

Declaração de conformidade

Declaramos por meio da presente que o produto no qual se

refere esta

declaração, corresponde às normas seguintes.

Deklaracja

RUS

Electronic Balance: KERN ALS, ALJ, PLS, PLJ, PLJ-M

EU Directive Standards

2004/108/EC

EN 61326-1 (2006) EN 61000-3-2 (2006) EN 61000-3-3 (1995) + A1 (2001) + A2 (2005)

2006/95/EC

EN 61010-1 (2001)

Signatur

Signature

Datum

Date

21.03.2013

Ort der Ausstellung

Place of issue

72336 Balingen Albert Sauter

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

KERN ALJ, PLJ, ALS, PLS Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual