KERN 572 User manual

E KERN 572/KB/DS
Version 4.6
Operating Instructions
Electronic Precision and Platform Balances
Contents:
1TECHNICAL DATA .............................................................................................................................................. 22
1.1 KERN 572 ....................................................................................................................................................... 22
1.2 KERN KB........................................................................................................................................................ 23
1.3 KERN DS ........................................................................................................................................................ 24
2DECLARATION OF CONFORMITY ................................................................................................................. 25
3INSTALLATION .................................................................................................................................................... 26
3.1 UNPACKING ...................................................................................................................................................... 26
3.2 POWER SUPPLY/MAINS OPERATION .................................................................................................................. 26
3.3 DESCRIPTION OF KEYBOARD FUNCTIONS .......................................................................................................... 26
3.4 DESCRIPTION OF DISPLAY PROMPTS.................................................................................................................. 27
4OPERATION........................................................................................................................................................... 27
4.1 TURN THE BALANCE ON AND OFF...................................................................................................................... 27
4.2 ADJUSTING (CAL)............................................................................................................................................ 27
4.2.1 Adjustment of non verifiable instruments.................................................................................................... 27
4.3 SELECTING UNITS: G, KG, OZ, OZT, DWT, GN, IB, CT........................................................................................ 28
4.3.1 Using the variable factor ............................................................................................................................ 29
4.4 TARE ................................................................................................................................................................ 29
4.5 WEIGHING ........................................................................................................................................................ 29
4.6 PIECE COUNTING............................................................................................................................................... 30
4.7 PERCENT DETERMINATION................................................................................................................................31
4.8 NET-TOTAL WEIGHING...................................................................................................................................... 32
4.9 PRINTOUT OF WEIGHING RESULTS..................................................................................................................... 32
4.10 THE MODE-PROGRAM..................................................................................................................................... 33
4.10.1 The CLEAR function............................................................................................................................... 33
4.10.2 The Autotare setting ............................................................................................................................... 33
4.10.3 The Enumerator...................................................................................................................................... 34
4.10.4 The "Fast" setting for fast weighing....................................................................................................... 34
4.10.5 Auto-off................................................................................................................................................... 35
5INTERFACE RS 232 C .......................................................................................................................................... 35
5.1 TECHNICAL DATA............................................................................................................................................. 35
5.2 DESCRIPTION OF THE JACK ............................................................................................................................... 35
5.3 BAUDRATE ....................................................................................................................................................... 36
5.4 RS 232 C DATA OUTPUT VIA INTERFACE RS 232 C ......................................................................................... 36
5.4.1 General information.................................................................................................................................... 36
5.4.2 Data output via PRINT-Key........................................................................................................................ 36
5.4.3 AUTOPRINT ............................................................................................................................................... 36
5.4.4 AUTOPRINT PC ......................................................................................................................................... 37
5.4.5 Remote Control:.......................................................................................................................................... 37
5.4.6 Description of the data transfer:................................................................................................................. 37
6OPTIONS................................................................................................................................................................. 38
6.1 PRINTER............................................................................................................................................................ 38
7 IMPORTANT NOTICE.......................................................................................................................................... 38
8MINOR BREAKDOWNS....................................................................................................................................... 39
572/KB/DS-BA-defsi-0246 21

1 Technical data
1.1 KERN 572
KERN 572-33 572-35 572-45 572-49 572-57
Readout 0,01 g 0,01 g 0,1 g 0,1 g 0,2 g
Weighing range 650 g 810 g 6.500 g 10.100 g 16.100 g
Taring range
(subtractive) 650 g 810 g 6.500 g 10.100 g 16.100 g
Reproducibility 0,01 g 0,01 g 0,1 g 0,1 g 0,2 g
Linearity ±0,02 g ±0,03 g ±0,2 g ±0,3 g ±1 g
Minimum weight for
counting parts 0,03 g 0,03 g 0,3 g 0,3 g 0,6 g
Adjusting weight
(class M1) 200 g 500 g 2.000 g 5.000g 5.000 g
Stabilisation time
(typical) 2 sec.
Ambient temperature +10 °C ... + 40 °C
Casing
(W x H x D) mm 180 x 310 x 60
Weighing plate mm Ø 150 Ø 150 160 x 200
Net weight kg 4
22 572/KB/DS-BA-defsi-0246

1.2 KERN KB
KERN KB500-2 KB5000-1
Readout 0,01 g 0,1 g
Weighing range 510 g 5.100 g
Taring range (subtractive) 510 g 5.100 g
Reproducibility 0,01 g 0,1 g
Linearity ±0,03 g ±0,3 g
Minimum weight for counting
parts
0,03 g 0,3 g
Adjusting weight (class M1) 200 g 1.000 g
Stabilisation time (typical) 3 sec.
Ambient temperature +10 °C ... + 40 °C
Casing (W x H x D) mm 165 x 230 x 80
Weighing plate mm 130 x 130 150 x 170
Net weight kg 1,8 2,7
Data interface yes
572/KB/DS-BA-defsi-0246 23

1.3 KERN DS
KERN DS6K0.1 DS15K0.2 DS36K0.5 DS65K0.1 DS120K2
Readout 0,1 g 0,2 g 0,5 g 1g 2g
Weighing range 6.500 g 16.100 g 36.100 g 65.000g 120.000g
Taring range
(subtractive) 6.500 g 16.100 g 36.100 g 65.000g 120.000g
Reproducibility 0,1 g 0,2 g 0,5 g 1g 2g
Linearity ± 0,3 g ± 0,6 g ± 1,5 g ± 3 g ± 6 g
Minimum weight for
counting parts 0,3 g 0,6 g 1,5 g 3g 6g
Adjusting weight without
Stabilisation time
(typical) 3 sec.
Ambient
temperature +10 °C ... + 40 °C
Casing (W x H x D)
mm
Platform 310 x 310 x 70
Terminal 200 x 100 x 55
Platform 350 x 450 x 115
Terminal 200 x 100 x 55
Net weight kg 11 12,5
Data interface yes
24 572/KB/DS-BA-defsi-0246

2 Declaration of conformity
Declaration of conformity
The electronic precision and platform balances
Type: KERN 572-33
KERN 572-35
KERN 572-45
KERN 572-49
KERN 572-57
KERN KB500-2
KERN KB5000-1
KERN DS6K0.1
KERN DS15K0.2
KERN DS36K0.5
KERN DS65K1
KERN DS120K2
Correspond to the production model described in the EC type-approval certificate
and to the requirements of the following EC directives:
EC EMC directive Version 89/336/ECC
Applied harmonised norms, in particular
EN 61326: 1997
+ A1: 1998
EN 61000-3-2: 1995
+ A1/A2 1998
+ A14 2000
EN 61000-3-3: 1995
If a change is made to the above mentioned appliances without consulting KERN
this declaration will become invalid.
Date: 07/01/2002 Signature:
Gottl. KERN & Sohn GmbH
Management
Gottl. KERN & Sohn GmbH, Ziegelei 1, D-72322 Balingen-Frommern, Tel. [phone], Fax [phone]
572/KB/DS-BA-defsi-0246 25

3 Installation
3.1 Unpacking
Take the balance carefully out of the packing. Take off plastic wrap. Install the balance at
the place intended for use.
Please retain all items of packaging in case of any future transit requirements. Check the
unit immediately for any visible transit damage and check that all accessories are included.
Standard accessories:
572/KB DS
- Balance with a weighing plate of high-
grade steel
- Adapter
- Adjusting weight
- Operating instructions
- Weighing bridge
- Analyse instrument
- Adapter
- Operating instructions
3.2 Power supply/Mains operation
Compare the voltage at the mains adapter with the mains voltage of the supply socket! The
balance may only be connected to the mains unit provided. The supply socket must be
earthed in accordance with electrical codes. Testing is only permitted by approved
specialist electrical companies.
3.3 Description of keyboard functions
Key Function
ON/OFF Switch balance on and off
PRINT Print a weighing result (when printer connected)
REF - Determine the set reference (in counting mode resp. Percent
mode).
MODE 1. "CAL" adjusting
2. Printer
-->2400 Bd, 4800 Bd, 9600 Bd, 19200 Bd. Enumerator,
AUTOPRINT; AUTOPRINT PC.
3. "Count" parts counting
4. "%" Percent determination
5. Variable Factor
6. "Fast" (1 – 5)
7. "Autotare"
8. "Auto off" automatic shutoff
9. "Test" (for service only)
<-> g Switch pieces/percent to weight and back.
Net/Total Function
UNIT Unit Conversion + Variable Value
TARE Tare, set display to zero
YES Confirm in MODE programme/ Fast setting
NO Delete in MODE-programme/Fast setting
26 572/KB/DS-BA-defsi-0246

3.4 Description of display prompts
Prompt Meaning
====OVERLOAD====
or
===================
Overload:
Weighing range exceeded
The display shows minus values
=================== Underload
<< Counting/percent mode: the parts weigh too light.
Opt Counting mode: The balance calculates automatically a better
reference.
X Confirmation sign for selected option in the MODE-program
4 Operation
4.1 Turn the balance on and off
Turn the balance on and off Display
1. Press ON/OFF-key
2. The display indicates
3. The weighing range is indicated, e.g.:
4. The display indicates
5. and finally
All segments
- - -6000,0 g- - -
- - - P 7.40 - - -
- - - - - - - - - - - -
0,0 g
4.2 Adjusting (CAL)
4.2.1 Adjustment of non verifiable instruments
Prior to first use, it is necessary to adjust the balance at the place intended for use.
The accuracy of the balance can be checked and adjusted at any time with an adjusting
weight. Take care of stable environmental conditions, see "Important Information". A
warming up time of 15 minutes is necessary.
Adjusting (CAL) Display
1. Press TARE-key to put the display to zero:
2. Press MODE-key, "CAL" appears:
3. Press YES-key t.
4. Wait until "PLACE CAL.-WEIGHT" appears:
5. Place the adjusting weight on the weighing plate.
0,0 g
CAL?
CALIBRATION ZERO
PLACE CAL.-WEIGHT
CALIBRATION SPAN
Avoid any vibration of the balance!
6. Adjusting is finished with the steady display of the adjusting
weight, e.g.
500,0 g
Keep the adjusting weight near the balance for daily control of the balance’s accuracy.
572/KB/DS-BA-defsi-0246 27

4.3 Selecting units: g, kg, oz, ozt, dwt, GN, Ib, ct
The non-metric units ounce (oz), troy ounce (ozt), tael (tael), pennyweight (dwt), grain (GN),
pound (Ib) and carat (ct) are usual in some countries beside of the metric units gram (g),
kilogram (kg)
The UNIT-key allows you to select one of the mentioned units. The new setting is
permanent and remains if you turn the balance off and on.
The following units are available within the individual models:
KERN 572-33
KERN 572-35
KERN KB400-2
KERN 572-45 KERN DS15K0.2
KERN 572-49 KERN DS36K0.5
KERN 572-57 KERN DS65K1
KERN KB5000-1 KERN DS120K2
KERN DS6K0.1
g
-
oz
ozt
*
dwt
gn
Ib
ct
g
kg
oz
ozt
*
dwt
-
Ib
-
* Variable value
The gram indication can be set again by repeated pressing the UNIT-Key (and not by
pressing the <->g-key).
28 572/KB/DS-BA-defsi-0246

4.3.1 Using the variable factor
Example 1: Entering the specific weight of liquids and solids, can be limited to the volume
by selecting“*“.
Example 2: Entering a conversion factor for defined sheets of paper, can be limited to g/m²
or g/DINA3, DINA4, DINA5 by selecting „*“.
Setting the variable factor
Press the MODE key repeatedly until VARIABLE FACTOR? appears and confirm with
„YES“. 000.000 *? appears on the display (the first digit flashes). The value can be reduced
by pressing the „NO“ key and increased by pressing the „YES“ key. The digit to be set is
changed and the factor completed by pressing the „g“ key. Press „UNIT“ until * appears on
the display to select a new unit.
4.4 Tare
Tare Display
1. Place the tare cup on the weighing plate
2. Press the TARE-key:
The display indicates ZERO.
(weight)
------
0,0 g
Fill the weighing object into the cup, read out the weight. When pressing TARE upon the
terminated weighing operation 0,0 g appears in the display. The taring operation can be
repeated as often as you like, for instance when weighing in different components to a
mixture. The limit will be reached when the total weighing range is used.
Having removed the tare cup the total weight appears as negative value.
4.5 Weighing
Weighing in Display
1. Place the cup on the weighing plate and tare.
2. Weigh in the sample and read off the weight.
0,0 g
126,5 g
Weighing out Display
1. Place full container on the weighing plate and tare.
2. The amount you remove is displayed with a negative sign.
0,0 g
- 10,0 g
* Formula weighing – weigh in several components:
For weighing in several components into the same cup, press TARE to start every
weighing at zero.
* Plus-Minus-Weighing– compare objects with a reference piece (nominal weight).
572/KB/DS-BA-defsi-0246 29

Determine nominal weight Display
1. Place nominal weight (e.g. 100 g) on the pan.
2. Press TARE-key: the display indicates zero.
3. Remove nominal weight. It is displayed with a negative sign.
100,0 g
0,0 g
- 100,0 g
Determine deviations Display
1. Place sample to be compared with the nominal weight on
the pan.
2. If the object is heavier (e.g. 104,5 g) the deviation is
displayed with a positive sign.
3. If the object is lighter (e.g. 97,5 g) the deviation is displayed
with a negative sign.
4,5 g
-2,5 g
4.6 Piece counting
In order to select the parts counting mode the following keys have to be pressed:
Selection of the reference piece quantity Display
1. Press MODE-key, "CAL? " appears.
2. Press MODE-key, "PRINTER?" appears.
3. Press MODE-key, "Count?" appears.
4. Confirm with YES-key
5. "REF=1" appears.
The desired reference can be selected by the MODE-key.
6. The following references can be selected: 1,5,10 and 20
pieces.
=> The desired reference to be confirmed by the
YES-key.
7. Return with the TARE-key to the weighing mode.
CAL?
PRINTER?
Count?
Count?x
REF=1?
0,0 g
Counting and determine reference (e.g. reference = 10 pcs.) Display
1. Press TARE-key to set the display to zero.
2. Place 10 pieces on the weighing plate.
3. Press REF-key. The balance is ready to count.
The counting accuracy can be improved by the following
proceedings:
4. Double the weighing object: Add (about) another 10 pieces.
The balance calculates the new reference and displays the
new quantity, wait for shortly flashing "opt".
5. Double again (see point 4)
6. The balance is ready to count.
0,0 g
(Weight)
10 PCS
opt 20 PCS
opt 40 PCS
30 572/KB/DS-BA-defsi-0246