KERN ALS Series User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
email: [e-mail]
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 4.3
2019-01
GB
ALJ/ALS/PLJ/PLS-BA-e-1943

ALJ/ALS/PLJ/PLS-BA-e-1943
2
GB KERN ALJ/ALS/PLJ/PLS
Version 4.3 2019-01
Operating Manual
Analytical and precision balances
Table of Contents
1Technical Data ............................................................................................... 4
2Declaration of Conformity........................................................................... 14
3Device overview........................................................................................... 15
3.1 Components .............................................................................................................15
3.2 Operating elements ..................................................................................................20
3.2.1 Overview of display .................................................................................................................. 20
3.2.2 Keyboard overview ................................................................................................................... 21
4Basic Information (General)........................................................................ 22
4.1 Proper use ................................................................................................................22
4.2 Improper Use ............................................................................................................22
4.3 Warranty ...................................................................................................................22
4.4 Monitoring of Test Resources ...................................................................................22
5Basic Safety Precautions............................................................................ 23
5.1 Pay attention to the instructions in the Operation Manual .........................................23
5.2 Personnel training .....................................................................................................23
6Transportation & Storage............................................................................ 23
6.1 Testing upon acceptance ..........................................................................................23
6.2 Packaging / return transport ......................................................................................24
7Unpacking, Setup and Commissioning ..................................................... 26
7.1 Installation Site, Location of Use ...............................................................................26
7.2 Unpacking / placing ..................................................................................................26
7.2.1 Placing ...................................................................................................................................... 27
7.3 Mains connection ......................................................................................................31
7.4 Connect and switch-on power supply ........................................................................31
7.5 Rechargeable battery operation (depends on model, see chp.1) ..............................32
7.6 Connection of peripheral devices ..............................................................................32
8Adjustment................................................................................................... 33
8.1 Models with external weight (KERN ALS/PLS)..........................................................33
8.1.1 Adjustment with recommended adjustment weight (factory setting) ........................................ 33
8.1.2 Adjustment with weights of other nominal values .................................................................... 34
8.2 Models with internal weight (KERN ALJ/PLJ) ............................................................36
8.2.1 Adjustment models PLJ-M ....................................................................................................... 37
8.2.2 Overwrite internal adjustment weight ....................................................................................... 38
8.3 Verification ................................................................................................................39
9Basic Operation ........................................................................................... 40
9.1 Underfloor weighing ..................................................................................................41

ALJ/ALS/PLJ/PLS-BA-e-1943 3
10 User menu.................................................................................................... 42
10.1 Weighing units (unit1 / unit2) .....................................................................................45
10.2 Data output type .......................................................................................................48
10.3 Baud rate ..................................................................................................................49
10.4 Auto Zero ..................................................................................................................50
10.5 Filter .........................................................................................................................52
10.6 Standstill control display ...........................................................................................53
10.7 Setting the contrast of the display .............................................................................54
10.8 Display background illumination ................................................................................55
10.9 Automatic switch-off function „AUTO OFF“ in stand-by mode ...................................56
11 User menu.................................................................................................... 57
11.1 Parts counting ...........................................................................................................58
11.1.1 Switching over between quantity and weight display ........................................................... 60
11.1.2 Automatic reference optimization ......................................................................................... 60
11.1.3 Numeric entering of the reference weight ............................................................................ 61
11.2 Density determination with the help of an underfloor weighing device .......................62
11.2.1 Density determination of solids ............................................................................................ 62
11.2.2 Determining density of liquids .............................................................................................. 64
11.3 Adding function .........................................................................................................66
11.4 Checkweighing .........................................................................................................68
11.5 Percent determination ...............................................................................................70
11.5.1 Entering the reference weight by weighing .......................................................................... 70
11.5.2 Numeric entering of the reference weight ............................................................................ 71
11.6 Animal weighing function ..........................................................................................72
11.7 Peak value function ..................................................................................................73
12 Data output RS 232C ................................................................................... 74
12.1 Technical Data ..........................................................................................................74
12.2 Pin allocation of balance output plug .........................................................................74
12.3 Interface....................................................................................................................75
12.4 Data transfer .............................................................................................................75
12.5 Format for data transmission ....................................................................................76
12.6 Remote control instructions.......................................................................................78
12.7 Printer mode .............................................................................................................78
13 Error messages............................................................................................ 80
14 Service, maintenance, disposal.................................................................. 80
14.1 Cleaning ...................................................................................................................80
14.2 Service, maintenance ...............................................................................................80
14.3 Disposal ....................................................................................................................81
15 Instant help................................................................................................... 81
16 Ionizer (Factory option KERN ALJ-A03) .................................................... 82
16.1 General information ..................................................................................................82
16.2 Basic safety guidelines .............................................................................................82
16.3 Technical specification ..............................................................................................84
16.4 Device overview ........................................................................................................84
16.5Start up .....................................................................................................................85
16.6 Applications ..............................................................................................................86
16.7 Cleaning ...................................................................................................................86

ALJ/ALS/PLJ/PLS-BA-e-1943
4
1 Technical Data
KERN ALJ 160-4A ALJ 200-5DA
Weighing range (max) 160 g 82 g / 220 g
Readability (d) 0.1 mg 0.01 mg / 0.1 mg
Reproducibility 0.1 mg 0.04 mg / 0.1 mg
Linearity ± 0.3 mg ± 0.1 mg / 0.2 mg
Stabilization time (typical) 4 sec. 6 sec.
Minimum unit weight at
piece counting
under laboratory conditions *
1 mg 1 mg
Minimum unit weight at
piece counting
under normal conditions **
10 mg 10 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 + 5° C …. + 35° C
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)
160 x 170 x 225 (inside)
190 x 195 x 225 (outside)
Weighing plate (stainless
steel) Ø 80 mm
Weight kg (net) 6.5 kg 7 kg
Interface RS 232C
Pollution Degree 2
Overvoltage Category Category II
Altitude Up to 4000 m
Installation Site device may only be used indoors

ALJ/ALS/PLJ/PLS-BA-e-1943 5
KERN ALJ 250-4A ALJ 310-4A ALJ 500-4A
Weighing range (max) 250 g 310 g 510 g
Readability (d) 0.1 mg 0.1 mg 0.1 mg
Reproducibility 0.1 mg 0.1 mg 0.2 mg
Linearity ± 0.3 mg ± 0.3 mg ± 0.4 mg
Stabilization time (typical) 4 sec. 4 sec. 4 sec.
Minimum unit weight at
piece counting
under laboratory conditions *
1 mg 1 mg 1 mg
Minimum unit weight at
piece counting
under normal conditions **
10 mg 10 mg 10 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 + 5° C …. + 35° C
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-1943
6
KERN ALJ 160-4AM ALJ 250-4AM
Product No / Type TALJ 160-4BM-A TALJ 250-4BM-A
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
Verification value (e) 1 mg 1 mg
Verification class I I
Minimum load (Min) 10 mg 10 mg
Stabilization time (typical) 4 sec. 4 sec.
Minimum unit weight at piece
counting under laboratory
conditions *
0,1 mg 0,1 mg
Minimum unit weight at piece
counting under normal
conditions **
1 mg 1 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 + 5° C …. + 35° C
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
Interface RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1943 7
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 under laboratory
conditions *
1 mg 1 mg
Minimum unit weight at piece
counting under normal
conditions **
10 mg 10 mg
Warm-up time 8 h
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 + 5° C …. + 35° C
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-1943
8
KERN PLJ 420-3F PLJ 720-3A PLJ 1200-3A
Weighing range (max) 420 g 720 g 1200 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 ± 0.002 g ± 0.003 g
Stabilization time (typical) 2 sec. 2 sec. 2 sec.
Minimum unit weight at piece
counting under laboratory
conditions *
5 mg 1 mg 5 mg
Minimum unit weight at piece
counting under normal
conditions **
50 mg 10 mg 50 mg
Warm-up time 4 h 4 h 8 h
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 + 5° C / + 35° C
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
Weighing plate
(stainless steel) Ø 11 cm
Weight kg (net) 4 kg 4.5 kg 4.5 kg
Interface RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1943 9
KERN PLJ 2000-3A PLJ 4200-2F PLJ 6200-2A
Weighing range (max) 2100 g 4200 g 6200 g
Readability (d) 0.001 g 0.01 g 0.01 g
Reproducibility 0.002 g 0.02 g 0.01 g
Linearity ± 0.004 g ± 0.04 g ± 0.03 g
Stabilization time (typical) 2 sec. 2 sec. 2 sec.
Minimum unit weight at piece
counting under laboratory
conditions *
50 mg 50 mg 10 mg
Minimum unit weight at piece
counting under normal
conditions **
500 mg 500 mg 100 mg
Warm-up time 8 h 4 h 4 h
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) 9V DC
230V/50 Hz
(Euro) 24 V AC
Operating temperature + 5° C …. + 35° C
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 160 210 x 340 x 100 210 x 340 x 100
Windshield mm
inside Ø 150, 60 high
outside Ø 160, 70 high
yes no no
Weighing plate
(stainless steel) Ø 16 cm Ø 16 cm Ø 16 cm
Weight kg (net) 4.5 kg 4.5 kg 5 kg
Interface RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1943
10
KERN PLJ 720-3AM PLJ 6200-2AM
Product No / Type TPLJ 720-3BM-A TPLJ 6200-2BM-A
Weighing range (max) 720 g 6200 g
Readability (d) 0.001 g 0.01 g
Reproducibility 0.001 g 0.01 g
Linearity ± 0.002 g ± 0.02 g
Verification value (e) 10 mg 100 mg
Verification class II II
Minimum load (Min) 20 mg 50 mg
Stabilization time (typical) 2 sec. 2 sec.
Minimum unit weight at piece
counting under laboratory
conditions *
1 mg 10 mg
Minimum unit weight at piece
counting under normal
conditions **
10 mg 100 mg
Warm-up time 4 h 4 h
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 + 5° C …. + 35° C
Humidity of air max. 80 % (not condensing)
Gehäuse (B x T x H) mm 210 x 340 x 100
Windshield [mm]
inside Ø 150, 60 high
outside Ø 160, 70 high
Weighing plate
(stainless steel) Ø 11 cm Ø 16 cm
Weight kg (net) 4,5 kg 4.5 kg
Interface RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1943 11
KERN PLS 420-3F PLS 720-3A PLS 1200-3A
Weighing range (max) 420 g 720 g 1200 g
Readability (d) 0.001 g 0.001 g 0.001 g
Reproducibility 0.002 g 0.001 g 0.001 g
Linearity ± 0.004 g ± 0.002 g ± 0.003 g
Stabilization time (typical) 3 sec. 2 sec. 2 sec.
Minimum unit weight at piece
counting under laboratory
conditions *
5 mg 5 mg 5 mg
Minimum unit weight at piece
counting under normal
conditions **
50 mg 50 mg 50 mg
Warm-up time 4 h 4 h 8 h
Adjustment weight 400 g (E2) 600 g (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)9V DC 230V/50 Hz (Euro)24V AC
Rechargeable battery
Operation period
30 h
Loading time 10 h
- -
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
Weighing plate
(stainless steel) Ø 11 cm
Weight kg (net) 4 kg 4.5 kg 4.5 kg
Interface RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1943
12
KERN PLS 4200-2F PLS 6200-2A
Weighing range (max) 4200 g 6200 g
Readability (d) 0.01 g 0.01 g
Reproducibility 0.02 g 0.01 g
Linearity ± 0.04 g ± 0.03 g
Stabilization time (typical) 3 sec. 2 sec.
Minimum unit weight at piece
counting under laboratory
conditions *
50 mg 50 mg
Minimum unit weight at piece
counting under normal
conditions **
500 mg 500 mg
Warm-up time 4 h 4 h
Adjustment weight 4 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)
9V DC
230V/50 Hz (Euro)
24V AC
Rechargeable battery Operation period 30 h
Loading time 10 h -
Rechargeable battery + 5° C …. + 35° C
Operating temperature max. 80 % (not condensing)
Underfloor weighing Clevis type eyelet, standard
Housing (B x D x H) mm 210 x 340 x 100
Windshield no
Weighing plate
(stainless steel) Ø 16 cm
Weight kg (net) 4 kg 4.5 kg
Interface RS 232C

ALJ/ALS/PLJ/PLS-BA-e-1943 13
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 under laboratory
conditions *
10 mg 500 mg
Minimum unit weight at piece
counting under normal
conditions **
100 mg 5 g
Warm-up time 4 h 4 h
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 + 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 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
* Minimum unit weight at piece counting under laboratory conditions:
 Perfect ambient conditions to perform high resolution counting
 No dispersion of counted parts weight
**Minimum unit weight at piece counting under normal conditions:
 Unstable ambient conditions (wind gusts, vibrations)
 Dispersion of counted parts weight

ALJ/ALS/PLJ/PLS-BA-e-1943
14
2 Declaration of Conformity
To view the current EC/EU Declaration of Conformity go to:
www.kern-sohn.com/ce
The scope of delivery for verified weighing balances (= conformity-
rated weighing balances) includes a Declaration of Conformity.

ALJ/ALS/PLJ/PLS-BA-e-1943 15
3 Device overview
3.1 Components
Model ALJ 200-5DA
Pos. Designation Pos. Designation
1 Glass windshield 6 Bubble level
2 Wind protection ring 7 RS232
3 Display 8 Mains adapter connection
4 Keyboard
5 Foot screw
Model ALJ 200-5DA with
installed ionizator
(KERN A
LJ-A03)

ALJ/ALS/PLJ/PLS-BA-e-1943
16
Front side of the balances
Model ALJ / ALS / PLJ 2000-3A
Pos. Designation
1 Glass wind screen
2 Weighing pan
3 Display
4 Keyboard
5 Foot screw
6 Bubble level

ALJ/ALS/PLJ/PLS-BA-e-1943 17
Models PLJ / PLS: Dimensions weighing plate Ø 110 mm
Pos. Designation
1 Cover glass wind screen
2 Glass wind screen
3 Weighing plate
4 Display
5 Keyboard
6 Foot screw

ALJ/ALS/PLJ/PLS-BA-e-1943
18
Models PLS
Dimensions weighing plate Ø 160 mm
Model PLS 20000-1F
Dimensions weighing plate 200 x 175 mm
Pos. Designation
1 Bubble level
2 Weighing plate
3 Display
4 Keyboard
5 Foot screw

ALJ/ALS/PLJ/PLS-BA-e-1943 19
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-1943
20
3.2 Operating elements
3.2.1 Overview of display
Icon Designation
Stability display
Indicator “zero display”
Application <Calculation of percentage>
Application <Parts counting>
Loading status rechargeable battery, see chap. Fehler!
Verweisquelle konnte nicht gefunden werden.
Balance is in input mode
Upper tolerance limit
Lower tolerance limit
Application <Density>
Brackets to display non verified ciphers (only verified balances)
Weighing Units