KERN & SOHN WTB 30K-2NM User Manual
KERN & Sohn GmbH
Ziegelei 1
E-Mail: info@kern-sohn.com
Tel: +49-[0]7433- 9933-0
Internet: www.kern-sohn.com
Operating instructions
Compact balance
KERN WTB-N, WTB-NM
Version 2.1
11/2014
GB
D-72336 Balingen
Fax: +49-[0]7433-9933-149
WTB-N_WTB-NM-BA-e-1421
KERN WTB-N, WTB-NM
Compact balance
GB
Version 2.1 11/2014
Operating instructions
Contents
1 Technical data ............................................................................................ 4
1.1 Dimensions............................................................................................................................. 8
2 Appliance overview .................................................................................... 9
2.1 Overview of display ................................................................................................................ 9
2.2 Keyboard overview ............................................................................................................... 11
3 Basic Information (Gen eral) .................................................................... 12
3.1 Proper use ............................................................................................................................ 12
3.2 Improper Use ....................................................................................................................... 12
3.3 Warranty ............................................................................................................................... 12
3.4 Monitoring of Test Resources .............................................................................................. 12
4 Basic Safety Precauti o ns ........................................................................ 13
4.1 Pay attention to the instructions in the Operation Manual ................................................... 13
4.2 Personnel training ................................................................................................................ 13
5 Transport and storage ............................................................................. 13
5.1 Testing upon acceptance ..................................................................................................... 13
5.2 Packaging / return transport ................................................................................................. 13
6 Unpacking, Setup and Commissioning .................................................. 14
6.1 Installation Site, Location of Use .......................................................................................... 14
6.2 Unpacking and placing ......................................................................................................... 15
6.2.1 Scope of delivery .................................................................................................................. 17
6.3 Rechargeable battery operation (optional) ........................................................................... 17
6.3.1 Mains connection during rechargeable battery operation .................................................... 19
6.4 Initial Commissioning ........................................................................................................... 20
6.5 Type of protection IP65 ........................................................................................................ 20
7 Adjustment ............................................................................................... 20
7.1 Adjustment ........................................................................................................................... 20
7.1.1 Adjustment non verifiabl e models ........................................................................................ 21
7.1.2 Adjustment of verifiable models ........................................................................................... 22
7.2 Verification............................................................................................................................ 23
7.2.1 Adjustment switch and seals ................................................................................................ 24
8 Operation .................................................................................................. 25
8.1 Weighing .............................................................................................................................. 25
8.2 Taring ................................................................................................................................... 25
8.3 Background illumination ....................................................................................................... 26
8.4 Weighing with tolerance range ............................................................................................. 27
WTB-N_WTB-NM-BA-e-1421 2
9 The menu .................................................................................................. 29
9.1 Navigation in the menu ........................................................................................................ 29
9.2 Menu overview (locked in verifiable models) ....................................................................... 30
9.3 Set auto-OFF function .......................................................................................................... 32
9.4 Multi-Tare function ............................................................................................................... 33
10 Error messages ........................................................................................ 33
11 Instant help ............................................................................................... 34
12 Service, maintenance, disposal .............................................................. 35
12.1 Cleaning ............................................................................................................................... 35
12.2 Service, maintenance ........................................................................................................... 35
12.3 Disposal................................................................................................................................ 35
3 WTB-N_WTB-NM-BA-e-1421
1 Tech nical data
KERN WTB
1K -4N
Weighing range (max) 1.5 kg 3 kg 6 kg
Readability (d) 0.2 g 0.5 g 1 g
Reproducibility 0.2 g 0.5 g 1 g
Linearity ±0.4 g ±1 g ±2 g
Recommended adjustment
weight, not added (class)
Stabilization time (typical) 2 sec.
Units kg
Warm-up tim e 30 min.
Electric Supply
Rechargeable battery
operation
1500 g
(M1)
Input voltage: 110V-230V AC
Power supply unit: 12 V, 500 mA
Service life: background illumination ON: 30 h
Background illumination off: 50 hours
Loading time 12 h
WTB
3K -3N
3 kg
(M1)
WTB
6K -3N
6 kg
(M1)
Auto-Off (rechargeable
battery)
Display type LCD with background illumination
Operating temperature -10° C …. + 40° C
Humidity of air 0 % - 80 % (non-condensing)
Dimensions of weighing plate
(Stainless steel) (mm)
Casing dimensions 286 x 316 x 126.5
Weight kg (net) 3.2
IP protection IP65
15 min., 5 min., 3 min., off
Character height 2.5 cm
262 x 202
WTB-N_WTB-NM-BA-e-1421 4
KERN WTB
10K -3N
Weighing range (max) 15 kg 30 kg
Readability (d) 2 g 5 g
Reproducibility 2 g 5 g
Linearity ±4 g ±10 g
Recommended adjustment
weight, not added (class)
Stabilization time (typical) 2 sec.
Units kg
Warm-up tim e 30 min.
Electric Supply
Service life: background illumination ON: 30 h
Rechargeable battery
operation
15 kg
(M1)
Input voltage: 110V-230V AC
Power supply unit : 12 V, 500 mA
Background illumination off: 50 hours
Loading time: 12 h
WTB
30K -3N
30 kg
(M1)
Auto-Off (rechargeable
battery)
Display type LCD, digit height 25 mm
Operating temperature -10° C …. + 40° C
Humidity of air 0 % - 80 % (non-condensing)
Dimensions of weighing plate
(Stainless steel) (mm)
Casing dimensions 286 x 316 x 126.5
Weight kg (net) 3.2
IP protection IP65
15 min., 5 min., 3 min., off
262 x 202
5 WTB-N_WTB-NM-BA-e-1421
KERN WTB
1K-4NM
Weighing range (max) 1.5 kg 3 kg 6 kg
Readability (d) 0.5g 1 g 2 g
Reproducibility 0.5 g 1 g 2 g
Linearity ±0.5 g ±1 g ±2 g
Recommended adjustment
weight, not added (class)
Stabilization time (typical) 2 sec.
Units kg
Warm-up tim e 30 min.
Electric Supply
Rechargeable battery
operation
1500 g
(M3)
Input voltage: 110V-230V AC
Power supply unit: 12 V, 500 mA
Service life: background illumination ON: 30 h
Background illumination off: 50 hours
Loading time 12 h
WTB
3K-3NM
3 kg
(M3)
WTB
6K-3NM
6 kg
(M3)
Auto-Off (rechargeable
battery)
Display type LCD with background illumination
Operating temperature -10° C …. + 40° C
Humidity of air 0 % - 80 % (non-condensing)
Dimensions of weighing plate
(Stainless steel) (mm)
Casing dimensions 286 x 316 x 126.5
Weight kg (net) 3.2
IP protection IP65
15 min., 5 min., 3 min., off
Character height 2.5 cm
262 x 202
WTB-N_WTB-NM-BA-e-1421 6
KERN WTB
10K-3NM
Weighing range (max) 15 kg 30 kg
Readability (d) 5 g 10 g
Reproducibility 5 g 10 g
Linearity ±5 g ±10 g
Recommended adjustment
weight, not added (class)
Stabilization time (typical) 2 sec.
Units kg
Warm-up tim e 30 min.
Electric Supply
Service life: background illumination ON: 30 h
Rechargeable battery
operation
15 kg
(M3)
Input voltage: 110V-230V AC
Power supply unit: 12 V, 500 mA
Background illumination off: 50 hours
Loading time: 12 h
WTB
30K-2NM
30 kg
(M3)
Auto-Off (rechargeable
battery)
Display type LCD, digit height 25 mm
Operating temperature -10° C …. + 40° C
Humidity of air 0 % - 80 % (non-condensing)
Dimensions of weighing plate
(Stainless steel) (mm)
Casing dimensions 286 x 316 x 126.5
Weight kg (net) 3.2
IP protection IP65
15 min., 5 min., 3 min., off
262 x 202
7 WTB-N_WTB-NM-BA-e-1421
1.1 Dimensions
WTB-N_WTB-NM-BA-e-1421 8
2 Appliance overview
1 Weighing plate
2 Keyboard
3 Bubble level
4 Display
2.1 Overview of displa y
Rear view:
9 WTB-N_WTB-NM-BA-e-1421
Display Description Description
Zeroing display
Should the balance not display exactly zero
despite empty scale pan, press the
button. The balance will be set to zero after a
short standby time.
Stability display Scales are in a steady state
Net weight display Net weight will be displayed
Capacity display
Rechargeable battery
Display Weighing with
tolerance range
Power supply connected Lights with power supply via power supply unit,
Display Weighing unit kg Displayed weight in kg
Triangle above the capacity indicator appears
when the battery capacity is almost exhausted
Triangle above "+": upper limit value
Triangle above "-": lower limit value
then the battery is being charged
WTB-N_WTB-NM-BA-e-1421 10
Switch-over units
2.2 Keyboard overview
Key Description Function i n m enu
ON/OFF-switch Turn on/off
+
TARE button
Tare balance
Weighing with
tolerance range
Call up menu
Change to the next menu
item /parameter
Zero setting key Set balance to zero Select menu item /
parameter
Push TARE + reset
button
simultaneously
11 WTB-N_WTB-NM-BA-e-1421
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