Me GSV-1 User Manual
Straingage Bridge Amplifier GSV-1
Version: July 09.2007
ME-Meßsysteme GmbH Neuendorftstr. 18a Tel.: +49 3302 559 282
DE-16761Hennigsdorf Fax: +49 3302 559 141
Table of Contents
Description.............................................................................................................................4
Models....................................................................................................................................5
Technical Data.......................................................................................................................6
Top hat rail housing GSV-1H.................................................................................................7
Pin Configuration...............................................................................................................7
Dimensions........................................................................................................................7
Adjustment of Input Sensitivity .........................................................................................8
Top Hat Rail Housing GSV-1HSW....................................................................................9
Functional Diagram.....................................................................................................10
Pin Configuration.............................................................................................................11
Adjustment of Input Sensitivity........................................................................................11
Layout of Jumpers.......................................................................................................12
Dimensions......................................................................................................................12
Option EP (cConnection of an External Potentiometer)..............................................12
Aluminum housing GSV-1A.............................................................................................14
Pin Configuration.............................................................................................................14
Adjustment of Input Sensitivity........................................................................................15
Dimensions......................................................................................................................15
Module housing GSV-1M.................................................................................................17
Dimensions......................................................................................................................17
Pin Configuration.............................................................................................................17
Printed Circuit Board GSV-1L .........................................................................................18
Pin Configuration.............................................................................................................18
Dimensions......................................................................................................................18
2 Instruction Manual
Strain Gage Measuring Amplifier GSV-1
Instruction Manual 3
Description
The GSV-1 is a precise bridge amplifier with an analog output for strain gage full bridges.
The special feature of the GSV-1 is the automatic zero balancing within just 90
milliseconds across 100% of the measurement range.
The zero balancing is triggered by means of a control signal from the PLC or with a
pushbutton. The control levels may be in between 3.5 and 30 volts.
The GSV-1 is available in many housing variants and many options, e.g. threshold value
sensor, peak value store, amplification selection by means of jumpers, stepless
amplification adjustment, plug connections etc.
The maximum range for the zero balancing is 100% of the sensitivity range with an output
signal ±5V at the GSV-1L. The GSV-1L with an output signal 0-10V is the zero balancing
±50% of the sensitivity range.
With options GSV-1H and GSV-1A the zero balancing accounts for ±100% of the nominal
sensitivity in every amplification level (2mV/V or 3.5mV/V).
The range for the zero balancing does not get reduced when the amplification is
increased.
The GSV-1 can supply up to 4 parallel-connected weighing cells with 350 ohm bridge
resistance each and is therefore eminently suitable for applications in weighing
technology. The option GSV-H can supply for 8 weighing cells with 350 ohm bridge
resistance.
Die Leiterkarte GSV-1L misst nur 30mm x 40mm x 6,5mm und kann aufgrund der
Stiftleisten leicht als Aufsatz in größere Leiterplatten integriert werden.
The GSV-1L printed circuit board measures just 30mm x 40mm x 6.5mm and can easily
be integrated as an add-on in larger PCBs thanks to the the pin strips.
The top hat rail housing GSV-1H for mounting rails according to EN50022 is just 12.5mm
wide and 114.5mm long.
The measuring amplifier GSV-1HSW additionally contains two threshold value sensors
with a relay and a peak value store. The thresholds are set either from front-side spindle
trimmers or connectable remote potentiometers.
The measuring amplifier GSV-1A has a robust aluminum pressure-cast housing in
environmental protection rating IP66. There is a light cast-plastic housing GSV-1M in IP66
available for portable applications.
For multi-channel applications for stress analysis with strain gages, in addition, we also
offer affordable 8-channel devices with analog outputs.
4 Instruction Manual
Models
Characteristic data
for all versions
(basic equipment)
Voltage supply 12V or 24V DC
output signal ±5V
limiting frequency 250Hz
optionally 2.5kHz or 10kHz;
remote controllable null balancing above
2mV/V;
input sensitivity 2mV/V,
optionally 3.5mV/V or 1mV/V
GSV-1L,
GSV-1H, GSV-1HSW,
GSV-1A
GSV-1M
GSV-1T8
GSV-1A8
L-Version: Printed circuit board
LxBxH 30mm x 40mm x 6,5mm;
2 gold-plated pins, 8-pole
GSV-1L
A-Version Aluminum die-cast housing
LxBxH 64mm x 58mm x 34mm
4 amplificaiton stages (1x-2x-4x-10x) and
trimmer (1x...10x)
±5V, ±10V, 4...20mA, 0...20mA
GSV-1A
Option xV: remote
controllable amplification
switching
Option 718: plug
connection
M-Version Cast housing, IP67
cast printed circuit board in module housing
55mm x 36mm x 17mm with miniature round
plugs type 718
±5V
GSV-1M
H-Version: Top hat rail housing
BxLxH 12.5mm x 114.5mm x 99mm;
4 amplification stages (1x-2x-4x-10x) and
trimmer (1x...10x)
±5V, ±10V, 4...20mA, 0...20mA
GSV-1H
amplification switching
Option TR: stepless
amplification setting via
trimmer potentiometer
HSW-Version: Top hat rail housing
BxLxH 25mm x 114.5mm x 99mm;
4 amplification stages (1x-2x-4x-10x)
peak value store, 2 threshold values with
relay (8A), sensor output for potentiometer
setting 0...1 Volt, output signal 0...+5V
GSV-1HSW
Option EP: external
potentiometer connectable
for adjusting the threshold
values
T-Version,
8 channels
Table top housing
BxLxH 158mm x 199 x 62mm
8 measuring channels, front side 15 pole Sub
D input socket, rear side BNC socket,
external power supply, zero-setting button,
output signal ±5V
GSV-1T8
Option AD: 37-pole Sub-D
socket for connecting with
AD insertable card
A-Version,
8 channels
Aluminum portable housing, IP65
BxLxH 169mm x 100 x 52mm
8 measuring channels, front side 4 pole
sockets type 718, rear side 9-pole Coninvers
socket, external power supply, zero-setting
button, optionally with handle
output signal ±5V
GSV-1A8
Instruction Manual 5
Technical Data
Design GSV-1 Unit
Accuracy class 0.1
Measurement range ±2
optional ±1.0 and ±3.5
mV/V
mV/V
Connectable full bridges 4 x 350 (87) up to 1 x 5000 Ohm
Bridge supply voltage 5 V
Input impedance > 20 / 300pF MOhm
Linearity deviation < 0.02 % v.E.
Temperature influence on the zero point per
10K referred to the measurement range (v.E.)
< 0.2
typ. 0.05
% v.E.
% v.E.
Temperature influence on the measuring
sensitivity per 10K referred to the measured
value (v.S.)
< 0.1
typ. 0.05
% v.S.
% v.S.
Output filter, analog output
3dB limiting frequency analog, Bessel, 2nd order 250 (20) (2k5) (10k) Hz
Resolution >20000 parts
Analog output
Nominal range
Operating range
Output resistance
optional for GSV-1H
±5
-6 ...+7.5
47
±10V, 4...20mA, 0...20mA
V
V
Ohm
Operating voltage
Nominal range
Operating range
Nominal range
GSV-1A / GSV-1A:
12.0…24
10.5...28
GSV-1L: 10,5...16 or 18...28
V
V
V
Current consumption
GSV-1L, GSV-1M
GSV-1H
GSV-1HSW
approx. 36
55...75 for option 4...20mA
approx. 90
mA
Zero balancing
Tolerance
Duration
Triggering on falling edge after at least 4ms
High-level (3,5V ... 30V or supply voltage)
< 5, typ. < 2.5
< 90
mV
ms
Memory last zero point
Nominal temperature range
Storage temperature range
-10…+65
-40…+85
°C
°C
Amplification stages
for GSV-1H and GSV-1HSW
1x, 2x, 4x, 10x (2, 1, 0.5 0.2) mV/V
Switch thresholds for GSV-1HSW
Switching hysteresis
Sensor output for potentiometer position
3 to 95
2.5
0.03...1.0
% v.E.
%v.E.
V
Peak value memory for GSV-1HSW
Rise time:
optionally for 10.000Hz:
Drift of the peak value:
< 50
< 25
< 0.1
µs/V
µs/V
%v.E./s
6 Instruction Manual
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