KERN PFB 120-3A User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating manual
Precision balances
KERN PFB
Type PFB_A
Version 4.1
2017-10
GB
PFB-BA-e-1741

2 PFB-BA-e-1741
GB
KERN PFB
Type PFB_A Version 4.12017-10
Operating manual
Precision balance
Contents
1Technical data................................................................................................ 4
2Declaration of conformity ............................................................................. 7
3Appliance overview ....................................................................................... 8
3.1 Keyboard overview..................................................................................................................... 8
3.2 Overview of display .................................................................................................................... 9
4Basic Information (General)........................................................................ 10
4.1 Proper use................................................................................................................................ 10
4.2 Improper Use............................................................................................................................ 10
4.3 Warranty................................................................................................................................... 10
4.4 Monitoring of Test Resources................................................................................................... 11
5Basic Safety Precautions............................................................................ 11
5.1 Pay attention to the instructions in the Operation Manual........................................................ 11
5.2 Personnel training..................................................................................................................... 11
6Transport and storage................................................................................. 11
6.1 Testing upon acceptance ......................................................................................................... 11
6.2 Packaging / return transport..................................................................................................... 11
7Unpacking, Setup and Commissioning ..................................................... 12
7.1 Installation Site, Location of Use.............................................................................................. 12
7.2 Unpacking and checking .......................................................................................................... 12
7.2.1 Placing...................................................................................................................................... 13
7.3 Mains connection...................................................................................................................... 14
7.4 Connecting to power supply..................................................................................................... 14
7.5 Connection of peripheral devices............................................................................................. 14
7.6 Adjustment................................................................................................................................ 15
7.7 Linearization ............................................................................................................................. 16
8Basic Operation ........................................................................................... 19
8.1 Start-up..................................................................................................................................... 19
8.2 Switching Off ............................................................................................................................ 19
8.3 Zeroing...................................................................................................................................... 19
8.5 Switch-over weighing unit......................................................................................................... 20
9Applications ................................................................................................. 22
9.1 Percent determination .............................................................................................................. 22
9.2 Parts counting........................................................................................................................... 23
9.3 Totalization ............................................................................................................................... 24
9.3.1 Manual totalizing....................................................................................................................... 24
9.3.2 Automatic adding-up................................................................................................................. 27

PFB-BA-e-1741 3
10 Menu ............................................................................................................. 29
10.1 Navigation in the menu............................................................................................................. 29
10.2 Access to technology menu...................................................................................................... 30
10.3 Overview................................................................................................................................... 31
11 Interfaces...................................................................................................... 33
11.1 RS232....................................................................................................................................... 33
11.1.1 Technical data...................................................................................................................... 33
11.1.2 Printer operation (RS 232) ................................................................................................... 34
11.1.3 Output log (continuous output)............................................................................................. 35
11.2 Remote control instructions...................................................................................................... 35
11.3 Bluetooth (Factory option)........................................................................................................ 36
11.3.1 Add device............................................................................................................................ 36
11.3.2 Determine COM Port number .............................................................................................. 38
12 Servicing, maintenance, disposal .............................................................. 39
12.1 Cleaning.................................................................................................................................... 39
12.2 Servicing, maintenance............................................................................................................ 39
12.3 Disposal.................................................................................................................................... 39
13 Error messages............................................................................................ 39
14 Instant help................................................................................................... 40

4 PFB-BA-e-1741
1 Technical data
KERN (Type) PFB 120-3A PFB 200-3A PFB 300-3A
Trademark PFB 120-3 PFB 200-3 PFB 300-3
Readability (d) 0,001 g 0,001 g 0,001 g
Weighing range (max) 120 g 200 g 300 g
Reproducibility 0,001 g 0,002 g 0,002g
Linearity ±0,003 g ±0,005 g ±0,005 g
Smallest part weight for
piece counting 2 mg 2 mg 2 mg
Reference quantities at
piece counting 10, 20, 50, 100, 200
Weighing Units g, ct, lb, oz, d, ozt, dwt, mo, tl h, tl c, tl t, t, bt, n
Recommended adjustment
weight, not added (class) 100 g (F1) 200 g (F1) 300 g (F1)
Warm-up time 2 hours
Stabilization time (typical) 3 sec.
Operating temperature + 15° C .... + 35° C
Humidity of air max. 80 % (not condensing)
Housing (B x D x H) mm 315 x 210 x 156
Dimensions of wind screen
(B x D x H) mm 124 x 119 x 80
Weighing plate,
stainless steel (mm) Ø 80 Ø 80 Ø 80
Weight kg (net) 2 kg
Electric Supply
Input voltage weighing scales 12 V / 500 mA
Input voltage power supply unit 100 V – 240 V, 50/60 Hz
Interfaces RS232
Bluetooth 2.0 (factory option)
Bluetooth 4.0 (factory option)

PFB-BA-e-1741 5
KERN (Type) PFB 600-2A PFB 1200-2A PFB 2000-2A
Trademark PFB 600-3 PFB 1200-2 PFB 2000-2
Readability (d) 0,01 g 0,01 g 0,01 g
Weighing range (max) 600 g 1200 g 2000 g
Reproducibility 0,01g 0,01 g 0,02 g
Linearity ±0,03 g ±0,03 g ±0,05 g
Smallest part weight for
piece counting 20 mg 20 mg 20 mg
Reference quantities at
piece counting 10, 20, 50, 100, 200
Weighing Units g, ct, lb, oz, d, ozt, dwt, mo, tl h, tl c, tl t, t, bt, n
Recommended adjustment
weight, not added (class) 600 g (F1) 1000 g (F1) 2000 g (F1)
Warm-up time 2 hours
Stabilization time (typical) 3 sec.
Operating temperature + 15° C .... + 35° C
Humidity of air max. 80 % (not condensing)
Housing (B x D x H) mm 315 x 210 x 156
Dimensions of wind screen
(B x D x H) mm 124 x 119 x 80
Weighing plate,
stainless steel (mm) Ø 120 Ø 120
Weight kg (net) 2 kg
Electric Supply
Input voltage weighing scales 12 V / 500 mA
Input voltage power supply unit 100 V – 240 V, 50/60 Hz
Interfaces RS232
Bluetooth 2.0 (factory option)
Bluetooth 4.0 (factory option)

6 PFB-BA-e-1741
KERN (Type) PFB 3000-2A PFB 6000-1A PFB 6000-2A
Trademark PFB 3000-2 PFB 6000-1 PFB 6000-2
Readability (d) 0,01 g 0,1 g 0,05 g
Weighing range (max) 3000 g 6000 g 6000 g
Reproducibility 0,02 g 0,1 g 0,05 g
Linearity ±0,05 g ± 0,3 g ± 0,15 g
Smallest part weight for
piece counting 20 mg 200 mg 200 mg
Reference quantities at
piece counting 10, 20, 50, 100, 200
Weighing Units g, ct, lb, oz, d, ozt, dwt, mo, tl h, tl c, tl t, t, bt, n
Recommended adjustment
weight, not added (class) 3000 g (F1) 6000 g (F1) 6000 g (F1)
Warm-up time 2 hours
Stabilization time (typical) 3 sec.
Operating temperature + 5° C .... + 35° C
Humidity of air max. 80 % (not condensing)
Housing (B x D x H) mm 315 x 210 x 156
Dimensions of wind screen
(B x D x H) mm 124 x 119 x 80 -
Weighing plate,
stainless steel (mm) Ø 120 155 x 145
Weight kg (net) 2 kg
Electric Supply
Input voltage weighing scales 12 V / 500 mA
Input voltage power supply unit 100 V – 240 V, 50/60 Hz
Interfaces RS232
Bluetooth 2.0 (factory option)
Bluetooth 4.0 (factory option)

PFB-BA-e-1741 7
2 Declaration of conformity
The current EC/EU Conformity declaration can be found online in:
www.kern-sohn.com/ce

8 PFB-BA-e-1741
3 Appliance overview
3.1 Keyboard overview
Button
Key
designation
Function
ON/OFF Turn on/off
ZERO Zeroing
TARE Taring
%
Enable calculation of percentage
Returning to weighing mode from calculation of
percentage mode
PCS Enable parts counting
In the piece count mode back to weighing mode
MODE Weighing units switch-over
Scroll forward in menu
PRINT Print out weighing result
Exit menu / back to weighing mode.

PFB-BA-e-1741 9
3.2 Overview of display
Display Description
Zero indicator
Net weight value display
οStability display
Pcs Parts counting application
% Calculation of percentage application
Tolerance weighing application
Capacity display
The capacity display moves from the left to the right and proceeds
equally to the weight loaded onto the weighing balance. Its full width
is reached at maximum load.
This is an analogue display of the current allocation of the weighing
area.
Weighing Units
(g) Gramm
(kg) Kilogramm
(ct) Carat
(mom) Momme
(oz) Ounce
(ozt) Fine ounce
(dwt) Penny weight
(tl.h) Tael (Taiwan)
(t.lt) Troy Tael
(t) Tola

10 PFB-BA-e-1741
4 Basic Information (General)
4.1 Proper use
The balance you purchased is intended to determine the weighing value of material
to be weighed. It is intended to be used as a “non-automatic balance”, i.e. the
material to be weighed is manually and carefully placed in the centre of the weighing
pan. As soon as a stable weighing value is reached the weighing value can be read.
4.2 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
displayed due to the “stability compensation“. (Example: Slowly draining fluids from a
container on the balance.)
Do not leave permanent load on the weighing pan. 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.
4.3 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 and damage caused by media, liquids,
natural wear and tear
•The appliance is improperly set up or incorrectly electrically connected
•The measuring system is overloaded