Sartorius GPC65-CW Operating Instructions Manual
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Operating Instructions
Sartorius Pipette Calibration Balance
Model GPC65-CW
98648-015-87
2 Intended Use
3 Warnings and Safety Instructions
4 General View of the Equipment
5 Overview: Display and Control Unit
6 Installation
9 Calibrating the GPC65-CW Weigh Cell
9 Installing the Evaporation Trap
11 Operation
12 Operating Design
13 Configuration
17 Parameter Settings (Overview)
24 Basic Weighing Function
27 Calibration and Adjustment
33 Application Programs
54 Data Output
60 Interface Port
65 Pin Assignment Chart
66 Cabling Diagram
67 Additional Functions
69 MP8 Interface Emulation
70 Error Codes and Messages
72 Care and Maintenance
73 Description of the Keys
75 Specifications
76 Overview
76 Dimensions (Scale Drawings)
78 Accessories (Options)
79 Declaration of Conformity
81 Index
The GPC65-CW models are high-resolution weigh cells for precise mass determination and offer weighing capacities
from 0.01 mg to 60 g (with load receptor only).
This compact weigh cell can be affixed
to any smooth, even surface and thus
enables determination of weight within
a restricted space.
A broad range of special performance
features makes the pipette calibration
balances ideal for use as measuring and
test equipment in ISO or GLP quality
management systems.
These features include:
– isoCAL fully automatic self-calibrating
and adjustment function (time- and
temperature-dependent).
The built-in calibration weight lets you
calibrate and adjust the weigh cell at
any time by pressing a key.
– reproTEST for quick determination of
the standard deviation to check the
repeatability of results
– ISO/GLP-compliant recording capability
for printouts
– Password-protected menu lock
– Display of maintenance |
service intervals when due
The weigh cell meets the highest
requirements placed on the accuracy
and reliability of weighing results
through the following features:
– Efficient filtering-out of vibration
– Stable and repeatable results
– Excellent readability under any lighting
conditions
– Rugged design and durable weighing
system
– Automatic initialization when you
switch on the balance
The weigh cell saves work and speeds
up both simple and complex routine
applications through:
– Ultrafast response times
Built-in application programs:
Application level 1:
– Second weight unit
– Counting
– Weighing in percent
– Animal weighing
– Recalculation
– Calculation
– Density determination
– Differential weighing
– Air buoyancy correction
– Air density determination
– Diameter determination
Application level 2:
– Checkweighing
– Time-controlled functions
Application level 3:
– Totalizing
– Formulation
– Statistics
Additional functions:
– Second tare memory
– Identification codes
– Product data memory
– SQmin function
– Manual data storage in
application level 3
– DKD uncertainty of measurement
– Easy input of IDs for samples
or other weighed objects
– On request: control using an
external computer
Symbols
The following symbols are used in
these instructions:
G indicates required steps
$ indicates steps required only under
certain conditions
> describes what happens after
a certain step has been perfomed
– indicates an item in a list
! indicates a hazard
Hotline:
For advice on the use of applications, just call or fax your local
Sartorius office. For the address,
please visit our Internet website at:
www.sartorius.com
Phone: +49 (0) 551.308.4440
Fax: +49 (0) 551.308.4449
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Contents Intended Use
Warnings and Safety Precautions
Safety Precautions
§ The weigh cell complies with the
applicable regulations and standards
for electrical equipment, electromagnetic compatibility, and the stipulated
safety requirements. Improper use or
handling can result in damage
and/or injury.
To prevent damage to the equipment,
read these operating instructions
carefully before using your balance.
Keep these instructions in a safe
place.
Follow the instructions below to
ensure safe and trouble-free
operation of your balance:
! Do not use this equipment in
hazardous areas, zones exposed to
explosive gases or dusts, or areas
exposed to potentially explosive
materials.
! Use of the weigh cell in areas where
medical equipment is operated is not
permitted.
! Do not expose the equipment to
extreme temperatures, moisture,
shocks, or vibrations.
! Make sure that the voltage rating
printed on the AC adapter is
identical to your local line voltage
! If you use electrical equipment in
installations and under ambient
conditions subject to more stringent
safety standards, you must comply
with the provisions as specified in
the applicable regulations for
installation in your country.
! If you connect a different weigh cell
or electronics module from Sartorius,
make sure the devices you connect
are made to be operated together.
Check the equipment numbers
before connecting the devices.
! Use of the weigh cell in areas where
medical equipment is operated is not
permitted.
! If you connect a different weigh cell
or electronics module from Sartorius,
make sure to connect devices that
are made to be operated together.
Check the equipment numbers
before connecting the devices.
! Exposure to excessive electromag-
netic interference can cause the
readout value to change. Once the
disturbance has ceased, the instrument can be used again in accordance with its intended purpose.
! The equipment may be opened only
by authorized service technicians
who have been trained by Sartorius
and who follow Sartorius’ standard
operating procedures for maintenance
and repair work.
! Connect only Sartorius accessories
and options, as these are optimally
designed for use with your weigh cell.
! When cleaning your weigh cell,
make sure that no liquid enters the
equipment housing; use only a
slightly moistened cloth to clean
the balance.
! Do not open the weigh cell housing.
If the seal is broken, this will result
in forfeiture of all claims under the
manufacturer‘s warranty.
! If any problems occur, disconnect the
device from power before performing
any repair work on the device.
! Make absolutely sure to disconnect
the electronics module from power
before you connect or disconnect
any electronic peripheral devices
(e.g., display unit) to or from the
data interfaces.
! If there is visible damage to the
equipment or power cord, disconnect
the equipment from power and
replace the weigh cell and electronics
module.
! If you have any trouble with your
weigh cell, contact your local
Sartorius office, dealer or service
center.
For technical assistance regarding
the design, specifications and installation of the equipment, please
contact your supplier or the Sartorius
hotline:
Phone: +49 (0) 551.308.4440
Fax: +49 (0) 551.308.4449
Installation
! Any incoming inspection or installa-
tion work that does not conform to
the instructions in this manual will
result in forfeiture of all claims
under the manufacturer’s warranty.
! All parts of the system must be
grounded (earthed), including any
draft shields that the customer may
use. For this purpose, connect an
equipotential bonding conductor.
– Note on installation:
The operator shall be responsible
for any modifications to Sartorius
equipment and for any connections
of cables or equipment not supplied
by Sartorius and must check and, if
necessary, correct these modifications
and connections.
On request, Sartorius will provide
information on the minimum operating specifications (in accordance
with the applicable standards for
immunity to interference).
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General View of the Equipment
Pos. Designation
1 Load receptor
2 Shield disk
3 Protective cap/transport locking device
4 Leveling foot
5 GPC65-CW weigh cell
6 Level indicator
7 Bore hole for connecting an equipotential bonding conductor
8 Connection cable with male connector for the electronics
module (length: 1 m)
9 Socket for connecting the weigh cell
10 Serial printer port (PRINTER)
11 Electronics module
Pos. Designation
12 Socket for connecting an optional display and control unit
13 DC jack
14 Connection cable for optional display and control unit
15 Display and control unit
16 Evaporation trap (complete)
17 Shield disk (exterior)
18 Shield disk (interior)
19 Reduction fitting
20 Pan
21 Reduction fitting for beaker (21 ml or 6 ml)
22 Beaker (21 ml or 6 ml)
23 Evaporation trap
24 Cover
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Overview: Display and Control Unit
Pos. Designation
1 Display
2 Tare key
3 Decimal point key
4 Print key
5 Numeric keys
6 Function keys
7 Toggle key for changing the application program
8 Calibration key
9 Clear function key/Setup key for configuring
the weigh cell
10 SETUP key for application programs
11 On/off key
12 Key for alphabetic input
13 Display and control unit
Equipment supplied
– Weigh cell
– Electronics module
– Operating instructions (this document)
– Display and control unit with 0.5m cable
– YCP01WZA pipette calibration set
– Thermal protective covers
Special accessories, if ordered, as listed on the bill of
delivery or in accordance with specific arrangement.
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Installation
The weigh cells are available in various
versions. If you have ordered special
options, the weigh cells are equipped
with the specified features at the factory.
Storage and Shipping Conditions
– Once the equipment has been removed
from the packaging, it may lose accuracy if subjected to strong vibration.
Excessively strong vibration may compromise the safety of the equipment.
– Do not expose the equipment unneces-
sarily to aggressive chemical vapors or
to extreme temperatures, moisture,
shocks or vibration.
$ It is a good idea to save the box and all
parts of the packaging until you have
successfully installed your equipment.
Only the original packaging provides
the best protection for shipment.
$ Before packing your equipment, unplug
all connected cables to prevent damage.
$ Do not expose the equipment to
gravitational acceleration in excess of
0 300 m/s
2
(unless additional equipment is installed on the load receptor
that enables it to withstand this force).
Incoming Inspection
The customer shall inspect the product
and packaging immediately upon delivery for proper functioning, completeness, and absence of defects. This is to
be performed in an incoming inspection
within 10 days of delivery of the product. The incoming inspection must take
place before the equipment is installed.
Any obvious defects, errors, or incorrect
delivery must be reported in writing.
Defects detected at a later date must be
reported in writing immediately upon
detection.
Be sure to perform the following as part
of the incoming inspection:
– We recommend performing a repeata-
bility test using an auxiliary draft shield
to make sure the weigh cells were not
damaged in transport. You can use the
display and control unit as an aid for
this test.
Installation Instructions
The equipment is designed to provide
reliable results under normal ambient
conditions. If you have any questions
or difficulties when developing your
weighing system, please contact the
specialists at Sartorius. When designing
and setting up your weighing system,
please observe the following so that
you will be able to work with added
speed and accuracy:
– The protective cap is designed to
protect the weigh cell.
Always replace the protective cap/transport locking device before transporting
the weigh cell.
!Following transport, be sure to calibrate
the weigh cell prior to performing any
measurements.
– Avoid exposing the equipment to the
effects of extremely high temperatures;
for example, caused by other electronic
components, heaters or direct sunlight.
– Protect the equipment from drafts that
come from open windows or doors.
– Operate the equipment at a constant
temperature.
– Avoid exposing the equipment to exces-
sive vibrations during weighing; for
example, caused by motors or valves.
– Protect the equipment from aggressive
chemical vapors.
– Do not expose the equipment to
extreme moisture.
– The assembly on the load receptor is
specially designed for pipetting (using
6 ml or 21 ml beakers). Other equipment installed on the load receptor
can interfere with weigh cell functions.
The operator of the equipment accepts
all liability for production release and
the overall specifications of the equipment as connected within the particular
system. The overall specifications
attained by your system may differ from
the specifications listed for the weigh
cell in these instructions.
Conditioning the equipment:
Moisture in the air can condense
on the surface of a cold weighing
instrument or other device whenever
it is moved to a substantially warmer
place. If you transfer the equipment to
warmer area, make sure to condition it
for about 2 hours at room temperature,
leaving it unplugged from AC power.
GPC65-CW:
An equipotential bonding terminal is
provided on the rear of the weighing
cell mounting plate. The screw on this
terminal is designed for wire diameters
of up to 6 mm
2
(unifilar) or 4 mm
2
(stranded wire). Make sure the equipment
is grounded to the machine framework.
Installing the Leveling Feet
§ Place the weigh cell on its side.
§ Insert and turn the leveling feet to
attach them to the weigh cell.
$ Remove the leveling feet before placing
the weigh cell in the optional accessory
case for the YDB01WZA25 pipette calibration set.
Connecting the Weigh Cell to the
Electronics Module
§ Position the equipment at the location
where it will be used.
§ Plug the connecting cable into the
socket on the electronics module and
the male connector on the weigh cell.
Make sure the components you connect
have identical serial numbers.
Connecting the Electronics Module to the Display and Control Unit
Important note: Make sure the electronics module is completely de-energized before
connecting it to the display and control unit.
§ Plug the cable into the socket on the electronics module. Make sure there is no supply
voltage. Then connect the components to one another.
Connecting the Equipment to AC Power
§ Check the voltage rating and the plug design. If they do not match your local rating or
standard, contact your supplier.
Use only
– Original Sartorius AC adapters or power supplies
– AC adapters or power supplies approved by an authorized technician.
§ Insert the right-angle plug from the AC adapter into the jack on the electronics module
and tighten the fastening screw.
§ Connect the equipment to AC power:
Plug the AC adapter into the wall outlet (mains).
$ Power is supplied over the DC jack. If the voltage specified on the label or the plug
design of the AC adapter does not match your local rating or standard, please contact
your nearest Sartorius office or dealer.
$ Using an AC adapter other than that supplied with the equipment:
The device can be operated with a supply voltage of 12 V to max. 26 V.
!The power connection must be made in accordance with the regulations applicable in
your country.
Safety requirements for operation of the evaluation electronics connected to a safety
extra-low voltage (SELV) source:
The external power supply must meet the requirements of EN 61010- 1, Section 6,
“Protection Against Shock Current.” Please also refer to the specifications for classifica-
tion of electrically operated equipment in EN 61010-1.
Safety Precautions:
The power supply must be rated to safety extra low voltage (SELV) or grounded (earthed)
safety extra low voltage (SELV-E). An AC adapter rated to Class 2 can be plugged into any
wall outlet with no additional safety precautions required. The ground terminal is con-
nected to the weigh cell housing. The electronics module must be grounded for operation.
The data interface is also electrically connected (grounded) to the weigh cell housing.
EMC requirements:
The connector is designed for DC connections between equipment/systems that are not
connected to a DC power supply. The cable length must not exceed 3 m.
To use an external power supply, the power source must meet the requirements of
EN61326. The following standards apply:
Fast transients IEC61000-4-4
Surge voltage IEC61000-4-5
Conductive HF signals IEC61000-4-6
Connecting Electronic Peripheral Devices
§ Make absolutely sure to unplug the weigh cell from AC power before you connect or dis-
connect a peripheral device (display and control unit or PC) to or from the interface port.
Warmup Time
The amount of warmup time required depends in part on the system in which the equip-
ment is installed. To deliver exact results, the equipment must warm up for at least 4
hours after it is connected to power for the first time. Only after this time will the device
have reached the required operating temperature.
Important note:
To avoid long warmup periods and ensure that the equipment can be put into operation
quickly, we recommend storing and transporting it at a constant temperature of 20°C.
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§ Remove the protective cap/transport locking device and put it in a safe place for later use.
Important note:
This cap is designed to protect the weigh cell. Always replace the protective cap before
transporting the weigh cell and any time you pack it for shipment or storage.
§ Place the following components onto the weigh cell in the order indicated:
– Shield disk
– Load receptor
Leveling the Weigh Cell in a Portable Weighing System (Leveling Feet)
Purpose:
– To compensate for uneven areas at the place of installation
– To ensure that the weigh cell is placed in a perfectly horizontal position for consistently
reproducible weighing results
– Always level the weigh cell again any time after it has been moved to a different location.
$ Leveling feet are included in the equipment supplied. The following leveling feet are
available:
– Standard individual leveling foot, product no.: 69B20005
– Design leveling feet (in a set of four), product no.: 69MA0195
§ Adjust the leveling feet until the air bubble is centered within the circle on the level
indicator.
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§ Remove the shield disk and load
receptor from the weigh cell
§ Select a beaker and a reduction fitting:
– Beaker, 21 ml
– Beaker, 6 ml
Calibrating the GPC65-CW Weigh Cell
Before the evaporation trap is installed on the load receptor, the weigh cell must be
calibrated at the location where it will be used and prior to the first measurement.
The evaporation trap together with its lid can be used as a draft shield.
$ The weigh cell is set up at the location where it will be used.
$ The leveling indicator shows that the weigh cell is level.
$ The weigh cell has been allowed to warm up sufficiently.
§ For information on calibrating the weigh cell, refer to the chapter entitled
“Calibration and Adjustment”
Installing the Evaporation Trap
Important note:
Be sure to wear gloves (see the Accessories section) before installing the evaporation trap.
Otherwise, moisture, oil and warmth from your hands can be transferred to the individual
parts of the evaporation trap, which could lead to errors in measurement. Keep all parts
clean and dry.
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§ Place the exterior shield disk on the
unit.
§ Place the interior shield disk on the
weigh cell.
§ Place the reduction fitting and weigh-
ing pan on the unit.
§ Place the beaker with its reduction
fitting on the weigh cell
§ Place the evaporation trap on the unit.
§ Replace the lid.
Installation is complete.
§ Fill the upper ring-shaped pan of the
evaporation trap with water.
Important note:
Once the evaporation trap has been
installed, allow the weighing system to
rest for a moment so that the compo-
nents can acclimatize to the ambient
conditions.
§ Pull the thermal protective coverings
included in the equipment supplied
over the weigh cell and the evaporation
trap.
$ You may now begin pipetting.
§ Use the pipette for filling procedures.
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Operating Design
The balances in the GPC65-CW Series
consist of a weighing cell and a display
and control unit. In addition to the
choice of power supply (via AC adapter
or external rechargeable battery pack),
your balance also has an interface port
for connecting a printer, computer or
universal remote control switch.
The display and control unit and the
weighing cell can be set up separately.
Operation of GPC65-CW balances follows a uniform “philosophy” which is
described in this manual.
Keys
The functions used most often are
assigned to their own specific keys.
There are additional keys for assignment of other (multiple) functions, in
some cases dependent on the current
operating status (so-called “soft keys”).
Each key is described in detail in the
chapter entitled “Overview” on the
CD-ROM.
Normal Operation
In the operating mode, these four keys
function as c, q, w and v
keys.
Setup Mode
In the setup mode, these keys take on
the function of arrow keys (x, y,
Y and X).
Soft Key Mode
The ‘soft key’ functions depend on the
current operating status; the current
function is indicated in the text line of
the display. In this example, the soft
keys are used to access Info, Menu and
Input functions.
CF
Setup
Setup
CF
CAL F
Setup
Display
The display is divided into six sections:
– Line for metrological data:
Metrological specifications of the
weighing platform.
Max ...g d=...g
Display during use as a legal measuring
instrument:
Max ...g Min ...g e=...g d=...g
– Bar graph: Display in percent of the
weight on the balance relative to the
maximum capacity and for over/under
checkweighing
– Measured value line: Display of weight
readout or alphanumeric input
Important Note Concerning Verified
Balances Approved for Use as Legal
Measuring Instruments in the EU*:
For verified balances that have
a verification scale interval “e” which
is greater than the scale interval “d,”
the last digit on the display is bordered.
– Weight unit display: Weight unit, other
unit of measure, operating information
The G symbol indicates non-verified
weight values.
– Symbol display: Indicates operating sta-
tus; application selected
– Text line: Prompts for operator guid-
ance, soft key designations
See the “Data Output” section in the
chapter entitled “Operation” on the
CD-ROM for a detailed description
of the information displayed in each of
these sections.
* including the Signatories of the Agree-
ment on the European Economic Area
Line for metrological data
Bar graph
Measured value line
Symbol display
Text line
Weight
unit display
Input
Numeric Input
To enter numbers:
Press the 12 … 0.keys
To store numbers entered:
Press the soft key
To interrupt/cancel numeric input:
Press c
Alphabetic Input
To enter letters:
First press the a key, then press
a letter soft key (Y or y) repeatedly
until the desired letter or special character is displayed in the text line
To store a word entered:
Press the soft key
To interrupt/cancel alphabetic input:
Press c
Configuring Balance Operating Parameters
To set parameter options for configuring your balance, you can select
the desired parameters from a list.
The lists of parameter options comprise
a menu, which has three levels.
For configuration functions:
Press the H key; then press the menu
soft key
To move within a menu level:
Press Y or y
To change to another menu level:
Press x or X
To confirm the selected parameter setting in the 3rd menu level:
Press X “o” indicates the currently set
parameter
The text line provides additional information. All parameters are listed in the
chapter entitled “Configuration” on the
CD-ROM.
To save parameter settings and close
the menu, press H.
To interrupt the parameter setting
process without saving changes:
Press e
Data Output
Your GPC65-CW balance is equipped
with a data interface for connecting
your choice of the following:
– Printer
– Peripheral device (e.g., computer)
– Universal remote control switch
Printer
You can configure the print functions
to meet your individual requirements by
selecting the corresponding menu code.
You can have printouts generated auto-
matically, or by pressing p; depend-
ent on or independent of the stability
or time parameters; with
or without IDs; and as standard or
ISO/GLP-compliant printouts.
ISO: International Organization for
Standardization
GLP: Good Laboratory Practice
See the section on “Data Output Func-
tions” in the chapter entitled “Opera-
tion” for a detailed description of data
output options.
Interface Port
Instead of a printer, you may choose
to connect a different peripheral device,
e.g. a computer (PC). With an on-line
PC you can control both the weighing
cell and the display unit of the
GPC65-CW balance.
Request messages are sent via the inter-
face to initiate functions in the weigh-
ing cell and in the display unit. Some of
the functions generate response mes-
sages.
See the section on “Data Output Func-
tions” in the chapter entitled “Opera-
tion” for a detailed description of the
interface port.
Error Codes
If you press a key that has no function,
or which is blocked at a certain point
in an application program, this error is
indicated as follows:
– a double-beep is sounded as an
acoustic signal, and
– where necessary, a message is displayed
for 2 seconds in the text line, after
which the text line returns to the previous display.
The response to an operator error is
identical in all models of the GPC26CW series. See the chapter entitled
“Error Codes” for a detailed description.
Storing Settings
Storing Parameter Settings
The settings configured are stored in
the balance’s non-volatile memory.
The most recent parameter settings are
active when you switch on the balance.
Saving Parameter Settings
You can assign passwords in order to
block access to the “Menu” and “Input”
functions.
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Configuration
Purpose
You can configure the pipette calibration balance to meet individual requirements by entering user data and setting
menu parameters in the Setup program.
You can also view balance-specific
data (such as serial number) in the
menu.
Setting the Language
Available Features
You can choose from 5 languages
for the information display:
1 German
2 English (factory setting)
3 English with U.S. date/time format
4 French
5 Italian
6 Spanish
Selecting the Language
G Enter the corresponding number
G Press H
’Info’ Display
Purpose
To have information about the equipment displayed.
Features
You can have the following information
displayed:
– Program version number for the display
and control unit
– Program version for the weighing cell
– Balance model
– Serial number of the weighing cell
Display Balance Information
G Select the Setup menu: Press H
G Select information:
Press the info soft (q key)
> Readout in measured value line: Version
number of the display and control unit
(see also “Data Output Functions, in the
chapter entitled “Operation” on the
CD-ROM
k Select next item of information:
Press Y
> Readout in measured value line:
Next information
k Select previous information:
Press y
> Readout in measured value line:
Previous information
k Print information: Press %
> Printout (example)
Mod. GPC...
Ser. no. 60406906
Ver. no. 01-30-13
Software version
(display and control unit)
Ver. no. 00-20-07
Software version (weighing platform)
G Exit the Setup menu:
Press H
> Balance returns to previous status
Entering User Data (Input)
Purpose
To display, input or change user data.
You can block access to these data by
assigning a password.
Features
You can display, input or change the
following user data:
– Workstation number* for the balance:
ID (balance ID; max. 20 characters)**
– Weighing series number, to designate
a series or lot:
L ID (lot ID; max. 20 characters)**
– Weight set number for calibration/
adjustment: W ID (weight ID;
max. 14 characters)**
– Exact weight value for calibra-
tion/adjustment of the balance (see
the section on “Calibration and Adjustment,” in the chapter entitled
“Operation.”
– Password for access to the Setup menu:
Input and Setup:
Menu (max. 8 characters)**
*** Only in conjunction with ISO/GLP-com-
pliant printouts (see the section
on “Setting Parameters” in the chapter
entitled “Configuration” under menu
code number 8 10 x).
** A decimal point is displayed together
with its preceding digit or character;
it does, however, count as a separate
character. This also applies when you
enter S ID and NUM as well as to data
entered via the interface.
*** To delete user password:
Enter a decimal point using the . key
and confirm
Factory Settings
Password: No designation
If no password has been assigned, anyone can access the “Setup: Input” and
“Setup: Menu” functions without entering a password.
If you assign a password and then forget what the word is, you can use the
General Password (see Appendix) to
access these menus.
Preparation
Display existing user data
G Select the Setup program: Press M
> The soft keys Info, Menu and Input
are displayed in the text line
G Select the user data input function:
Press the Input softkey v
> The password prompt is displayed
k If access is blocked by a password:
enter the password using the alphanumeric input keys
G Display user data:
Press the enter passw. soft key v
> The last 8 digits of a workstation/
balance number (ID no.), if any ID is
assigned, are displayed in the measured
value line
Enter/Change Password
G Select the Setup menu:
Press M
> The soft keys Info, Menu and Input
are displayed in the text line
G Select the user data input function:
Press the Input soft key v
If you have already assigned
a password:
> The password prompt is displayed
k Enter the password
k Press the enter passw.
soft key v
G Write down the password here:
Password = ........................................
If you no longer remember the password assigned:
k Enter the General Password
(see Appendix)
k Press the enter passw.
soft key v
> The last 8 digits of a workstation/
balance number (ID no.), if any ID is
assigned, are displayed in the measured
value line
G Select password setting:
Press
y
> Password is displayed
in the text line
>
If a password exists, it is now displayed
in the measured value line
G New password: Enter the letters/
numbers for the new password
(8 characters max.)**
The password “none” means that no
password is stored.***
G Confirm input: Press X
G Exit the Setup menu:
Press M
> Restart the application
14
15
Practical Example
Enter “Workstation 234” as Balance ID; Display and Print Other User Data
Step Key (or instruction) Display/Output
1. Select Setup menu, then Input; see Preparation
Display balance workstation ID (in
this example: no ID number exists)
2. Enter the first letter of the balance a 13th through 20th digits of ID displayed
workstation ID
3. Set the letter “W” y repeatedly, until the W
is in the middle
4. Enter the next letter of the balance a
workstation ID
5. Select the letter “o” Y repeatedly
6. Repeat steps 4 and 5 with axX
the appropriate letters (display
“longer” values: see “Data Output
Functions” on page 54)
7. Store balance workstation ID ID soft key (X)
8. Display the 5th through 12th digits x
of the balance workstation ID
IDz(- a -)b
m
ma
me
Step Key (or instruction) Display/Output
9. Display lot number Y 13th through 20th digits displayed
(In this example: 09-10-96/ABC1)
10. Display 5th through x
12th digits of lot no.
11. Display other user data xyYX
– Weight set no.
– Exact calibration weight
– Password
12. Print user data (example) p ID WORKSTATION 234
L-ID 09-10-96/ABC1
W-ID A-123.456.XY C
Cal.wt. +2000.02
13. Exit “Setup: Input” M
16
17
Parameter Settings (Overview)
Purpose
To configure the balance; i.e., adapt
the balance to individual requirements
by choosing from a list of parameter
options in a menu. You can block
access
to this menu by assigning a password.
Features
The parameter options are divided into
the following groups (1st menu level):
1 Balance functions
2 Application programs
3 Application parameters
4 +/– parameter
(for over/under checkweighing)
5 Interface parameters
6 Print for weighing (print weights)
7 Print for application program
(print app. data)
8 Additional functions
9 Reset menu
Factory Settings
The factory-set configurations are
marked with an “o” in the chapter
“Parameter Settings” on the CD-ROM.
Preparation
G Select the Setup menu: Press M
> The Info, Menu and Input soft keys
are displayed in the text line
G Select the parameter menu:
Menu soft key w
> Password prompt is displayed
G Enter password using the alphanumeric
input keys
G Confirm password entered:
enter passw. soft key v
> Measured value line:
1 (1st menu level)
> Text line: Balance functions
k Select the next group: Press Y
k Select the next submenu within a group
(2nd menu level): Press X
k Select previous group: Press y
k Return to next higher menu level: Press
x
Additional Functions
G Exit the menu: Press M
> Restart the application
G Print parameter settings:
– When the 3rd menu level is selected:
Press p
> Printout (example)
4 2 Auto print +/-
2 Off
– When the 2nd menu level is selected:
Press p
> Printout (example)
4 Parameter +/-
------------------4 2 Auto print +/-
2 Off
4 3 +/- ctrl ports
1 Within ctrl r
– When the 1st menu level is displayed:
Press p
> Prints all of the menu parameters that
are currently set
18
Practical Example
Select the Counting Application Program
Step Key (or instruction) Display/Output
1. Select Setup menu M
2. Select Balance Functions group code (Menu) Menu soft key w
3. Select the Application Prog. group Y
4. Confirm Application Program X
(2nd menu level)
5. Confirm App. Selection X
(3rd menu level shows current
setting; in this case: weighing)
6. Select the Counting program Y Y
7. Confirm selection of Counting program X
8. Set other parameters, if desired x y Y X
9. Save settings and exit menu M
info--menu--input
19
Setup Parameters (Overview)
o Factory setting
√ User setting
** = setting not applicable in balances verified for use in legal metrology
Menu
20
*** = setting not applicable in balances verified for use in legal metrology
21
* = setting not applicable in balances verified for use in legal metrology
Tabelle fehlt
22
Setup menu 1 to 4 see previous pages
for applications
5 Interface 5 1 see previous page
5 2 Parity 5 2 2 Space
5 2 3 o Odd
5 2 4 Even
5 3 No. of stop bits 5 3 1 o 1 stop bit
5 3 2 2 stop bits
5 4 Handshake 5 4 1 Software handshake
mode 5 4 3 o Hardware handshake,
1 character after CTS
5 5 Communication 5 5 1 o SBI
mode 5 5 2 xBPI
5 5 4 YDP01IS
5 5 5 YDP02
5 5 6 YDP03
5 5 7 YDP01IS Label printer
5 5 10 YDP02IS
5 5 11 YDP02IS Label printer
5 5 14 YDP04IS
5 5 15 YDP04IS Label printer
5 6 Network address 5 6 1 o Address 0
5 6 x Addresses 1 to 30
5 6 32 Address 31
6 Print for 6 1 Print manual/ 6 1 1 Manual without stability parameter
weighing automatic 6 1 2 o Manual with stability parameter
6 1 4 Auto print without stability parameter
6 1 5 Auto print at stability
6 1 6 Auto print after weight change
6 2 Stop auto print 6 2 1 Use key
6 2 2 o Not possible
6 3 Time-dependent 6 3 1 1 display update
auto print 6 3 2 2 display updates
6 3 4 10 display updates*
6 3 7 100 display updates*
6 4 Print -> 6 4 1 o Off
autotare 6 4 2 On
7 Print for 7 1 Print application 7 1 1 o Off
application parameters 7 1 2 All parameters
7 1 3 Only main parameters
7 2 Line format 7 2 1 For raw data
7 2 2 o For other applications/GLP
7 3 Print net total 7 3 1 o Auto print net
7 3 2 Auto print tare
8 and 9 Balance menu see next page
* = setting not applicable in balances verified for use in legal metrology
Level 1
Level 2
Level 3
Factory setting
Menu item
23
Basic Weighing Function
Purpose
The basic weighing function is always
accessible and can be used alone or
in combination with an application program (Toggle between Weight Units,
Counting, Weighing in Percent, etc.).
Features
– Taring the GPC65
– Assigning IDs to weights
– Printing weights
– Printing ID codes for weights
General Instructions
for “Analytical Weighing”
with Weigh Cells
Handling of Samples and Containers
Samples should be acclimatized to the
temperature of the weigh cell to avoid
negative effects on results, such as
measurement errors and fluctuations
caused by air buoyancy resulting from
convection currents across the surface
of the sample.
These negative effects increase as the
volume and/or surface area of the sample increases. For this reason, the size of
the container should be appropriate for
the sample.
Samples and containers should not be
touched by the operator’s hands, as the
hygroscopic effect of fingerprints and
the effect of the hand’s temperature
can influence the measurement results.
Samples must be applied very carefully,
whether manually (using a forceps) or
automatically (by a robot or filling
system).
When designing a draft shield device,
steps must be taken to keep the increase
in temperature within the weighing
chamber to a minimum (e.g., using
a bypass).
Weighing Electrostatically Charged
Samples or Containers
If a sample or container is electrostatically
charged, significant errors may result
during weighing. Materials with low
conductivity, such as glass, plastic or
filters, are particularly susceptible to
static electricity (resulting, e.g., from
friction) because the weighing pan can
discharge the static electricity only very
slowly.
The result is a force action between the
charge on the sample and the permanently installed parts of the weigh cell.
This causes the readout to fluctuate
constantly.
Ionization can be applied to make the
air around the sample conductive. This
allows the charge to be compensated
through the air, or discharged through
the ground (grounded).
Aside from purely mechanical solutions
(e.g., using a special weighing pan to
shield the system), bombarding the
sample with ions of opposing polarity
to neutralize the surface charge is one
of the most effective methods for
eliminating static electricity.
Sartorius can provide ionization devices
for installation in weighing systems.
The area around the weigh cell can also
contain charges that negatively affect
the accuracy of weighing results.
Appropriate steps taken in the design
of a draft shield device can counteract
such effects.
Weighing Magnetic or Magnetizable
Samples
The use of magnetizable materials in
the manufacture of weigh cells is
unavoidable, primarily because the
operating principle of high-resolution
weigh cells is based on compensation
of the load through magnetic forces.
When weighing magnetic or magnetizable samples or containers, interaction
between the sample or container and
certain parts inside the weigh cell may
distort weighing results.
To keep such distortion to a minimum,
we recommend increasing the distance
between the sample/container and the
weighing system using a non-magnetic
material. The force is reduced quadratically with the increase in distance.
Magnetizable or magnetized samples
and the weigh cell itself interact with
magnetic fields and magnetizable or
magnetized parts in the area surrounding the weighing system. The system
can be shielded from external magnetic
fields to some extent using (soft magnetic) plates.
24
Factory Settings
Tare: After stability (1 5 2)
Print manual/automatic:
Manual after stability (6 1 2)
Line format for printout:
For other applications/GLP (7 2 2)
Alphanumeric input of a weight ID:
Keys unblocked (8 3 1)
Preparation
G Turn on the balance: Press e
> All display segments light up briefly
k To change configurations:
see the chapter entitled “Configuration”
on the CD-ROM
k To load factory-set configurations:
see “Configuration” on the CD-ROM,
parameter 9 1
k To tare the balance: Press t
> The U symbol is displayed when
the balance is zeroed or tared (only on
balances verified for use in legal
metrology)
G Select the parameters “Line format” and
“For other app./GLP” from the Setup
menu: Press M
G Select mode: Press the menu soft key
G Set parameter 7 2 2: See the chapter
entitled “Configuration” on the
CD-ROM
G Exit the Setup menu: Press M
Additional Functions
In addition to the functions:
– alphanumeric input,
– taring (not during alphanumeric input),
– printing, you can also access the fol-
lowing functions from the weighing
application:
– calibration (not during alphanumeric
input),
– setup,
– turning off the balance.
Calibration
G Press q
> See the section on “Calibration/Adjust-
ment” for further instructions.
Setup Menu
G Press M
> See the chapter entitled “Configuration”
on the CD-ROM for further instructions.
Turning Off the Balance
G Press p
> The balance shuts off
> The display goes blank
25
Practical Examples
Example W1: Simple Weighing
Step Key (or instruction) Display/Output
1. If necessary, tare the balance t
(U symbol: balance is tared,
– verified balances only)
2. Enter sample ID see Example W2
3. Determine sample weight Place sample on balance
(Example)
4. Print weight p
S ID ABC123
N + 2231.56 g
26
Example W2
Enter “ABC123” as a sample ID
Note:
– The sample ID generally applies to one weighing operation only
– The ID is deleted after data output
Step Key (or instruction) Display/Output
Initial status (balance unloaded)
(ID can also be entered while balance
is loaded)
1. Enter the letter “A” a
2. Select and enter the letter “B” a
Softkey B (Key Y)
3. Select and enter the letter “C” a Softkey . .
(Key Y Y)
4. Enter the numbers “1,” “2” and “3” 1 2 3
5. Store the ID Press the SP.ID soft key v
(max. 20 characters)
– The next printout will include this ID
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