17
RM4220
A1091-4.0 en/de
HBM
G
5
Sensitivity
Supply
voltage
•
Set ZERO switch to position 7 (zero =
4.0mV/V).
•
Load the transducer with the required full scale and set the voltage full scale
V
m
(current end scale I
m
).
•
Check that V
out
= 5V (I
out
= 12mA) for the zero point, if this is not the case,
adjust the
Gain
(front) so that V
out
= 5V (I
out
= 12mA).
•
Relieve the transducer, adjust
Zero
(front) to 5V (12mA).
•
Check the amplification adjustment again.
•
The measuring chain is now adjusted and ready for operation.
7.2
Example 2: Load cell with compressive loading
Load cell
•
Resistance:
350
Ω
•
Full bridge:
Six‐wire configuration
•
Sensitivity
3mV/V
Configuration (0
mV/V for 0
V (4
mA) and 3
mV/V for 10
V (20
mA))
•
Set OUTPUT switch to position 0/10V (factory setting).
•
Set 4 WIRE/6 WIRE switch to six‐wire configuration.
•
Set EXCITATION switch to supply voltage 10V (factory setting).
•
Set GAIN switch to position 3:
G
10
Sensitivity
Supply
voltage
•
Set ZERO switch to position 2 (zero =
0.035mV/V).
•
3 Hz bandwidth (factory setting).
Adjustment
•
Adjust with
Zero
on the front to 0V (4mA) with a voltmeter (amperemeter),
if the zero point is unstable, then change the zero point setting ZERO to
position 3 and adjust
Zero
again.
•
Load the transducer with the required full scale.
•
Adjust the
Gain
on the front to 10V (20mA) with a voltmeter
(amperemeter).
