KERN WTB-N User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instructions
Compact balance
KERN WTB-N, WTB-NM
Version 2.1
11/2014
GB
WTB-N_WTB-NM-BA-e-1421

GB
KERN WTB-N, WTB-NM
Version 2.1 11/2014
Operating instructions
Compact balance
Contents
1Technical data ............................................................................................ 4
1.1 Dimensions............................................................................................................................. 8
2Appliance overview.................................................................................... 9
2.1 Overview of display................................................................................................................ 9
2.2 Keyboard overview............................................................................................................... 11
3Basic Information (General).................................................................... 12
3.1 Proper use............................................................................................................................ 12
3.2 Improper Use ....................................................................................................................... 12
3.3 Warranty............................................................................................................................... 12
3.4 Monitoring of Test Resources.............................................................................................. 12
4Basic Safety Precautions ........................................................................ 13
4.1 Pay attention to the instructions in the Operation Manual................................................... 13
4.2 Personnel training ................................................................................................................ 13
5Transport and storage............................................................................. 13
5.1 Testing upon acceptance..................................................................................................... 13
5.2 Packaging / return transport................................................................................................. 13
6Unpacking, 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
7Adjustment ............................................................................................... 20
7.1 Adjustment ........................................................................................................................... 20
7.1.1 Adjustment non verifiable models........................................................................................ 21
7.1.2 Adjustment of verifiable models........................................................................................... 22
7.2 Verification............................................................................................................................ 23
7.2.1 Adjustment switch and seals................................................................................................ 24
8Operation .................................................................................................. 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

9The 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 Technical data
KERN WTB
1K -4N
WTB
3K -3N
WTB
6K -3N
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) 1500 g
(M1) 3 kg (M1) 6 kg (M1)
Stabilization time (typical) 2 sec.
Units kg
Warm-up time 30 min.
Electric Supply Input voltage: 110V-230V AC
Power supply unit: 12 V, 500 mA
Rechargeable battery
operation
Service life: background illumination ON: 30 h
Background illumination off: 50 hours
Loading time 12 h
Auto-Off (rechargeable
battery) 15 min., 5 min., 3 min., off
Display type LCD with background illumination
Character height 2.5 cm
Operating temperature -10° C …. + 40° C
Humidity of air 0 % - 80 % (non-condensing)
Dimensions of weighing plate
(Stainless steel) (mm) 262 x 202
Casing dimensions 286 x 316 x 126.5
Weight kg (net) 3.2
IP protection IP65
WTB-N_WTB-NM-BA-e-1421 4

KERN WTB
10K -3N
WTB
30K -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) 15 kg
(M1) 30 kg (M1)
Stabilization time (typical) 2 sec.
Units kg
Warm-up time 30 min.
Electric Supply Input voltage: 110V-230V AC
Power supply unit: 12 V, 500 mA
Rechargeable battery
operation
Service life: background illumination ON: 30 h
Background illumination off: 50 hours
Loading time: 12 h
Auto-Off (rechargeable
battery) 15 min., 5 min., 3 min., off
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) 262 x 202
Casing dimensions 286 x 316 x 126.5
Weight kg (net) 3.2
IP protection IP65
5 WTB-N_WTB-NM-BA-e-1421

KERN WTB
1K-4NM
WTB
3K-3NM
WTB
6K-3NM
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) 1500 g
(M3) 3 kg (M3) 6 kg (M3)
Stabilization time (typical) 2 sec.
Units kg
Warm-up time 30 min.
Electric Supply Input voltage: 110V-230V AC
Power supply unit: 12 V, 500 mA
Rechargeable battery
operation
Service life: background illumination ON: 30 h
Background illumination off: 50 hours
Loading time 12 h
Auto-Off (rechargeable
battery) 15 min., 5 min., 3 min., off
Display type LCD with background illumination
Character height 2.5 cm
Operating temperature -10° C …. + 40° C
Humidity of air 0 % - 80 % (non-condensing)
Dimensions of weighing plate
(Stainless steel) (mm) 262 x 202
Casing dimensions 286 x 316 x 126.5
Weight kg (net) 3.2
IP protection IP65
WTB-N_WTB-NM-BA-e-1421 6

KERN WTB
10K-3NM
WTB
30K-2NM
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) 15 kg
(M3) 30 kg (M3)
Stabilization time (typical) 2 sec.
Units kg
Warm-up time 30 min.
Electric Supply Input voltage: 110V-230V AC
Power supply unit: 12 V, 500 mA
Rechargeable battery
operation
Service life: background illumination ON: 30 h
Background illumination off: 50 hours
Loading time: 12 h
Auto-Off (rechargeable
battery) 15 min., 5 min., 3 min., off
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) 262 x 202
Casing dimensions 286 x 316 x 126.5
Weight kg (net) 3.2
IP protection IP65
7 WTB-N_WTB-NM-BA-e-1421

1.1 Dimensions
WTB-N_WTB-NM-BA-e-1421 8

2 Appliance overview
1Weighing plate
2Keyboard
3Bubble level
4Display
2.1 Overview of display
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 Triangle above the capacity indicator appears when the battery capacity is almost exhausted
Display Weighing with
tolerance range Triangle above "+": upper limit value
Triangle above "-": lower limit value
Power supply connected Lights with power supply via power supply unit,
then the battery is being charged
Display Weighing unit kg Displayed weight in kg
WTB-N_WTB-NM-BA-e-1421 10