HBM RM4220 - Set Amplification

RM4220
14
A1091-4.0 en/deHBM
Null(mVV) 
R
Bridge
 1000
4 

R
W
R
Bridge

The table shows the adjustable misalignments for R
Bridge
=350Ω and
R
Bridge
=87Ω.
ZERO R
ZERO
Zero for R
Bridge
= 350 W Zero for R
Bridge
= 87 W
Ω mV/V mV/V
1 3.9⋅10
6
 0.020 (factory setting)  0.005 (factory setting)
2 2.2⋅10
6
 0.035  0.009
3 750⋅10
3
 0.110  0.028
4 301⋅10
3
 0.280  0.070
5 121⋅10
3
 0.710  0.175
6 49900
 1.730  0.430
7 21000
 4.000  1.000
8 9090
 9.200  2.300
Set the coarse value with the ZERO DIP switches, the fine adjustment can be
implemented with the Zero potentiometer on the front.
5.4 Set amplification
The amplification is set with GAIN (Fig. 5.2) and the Gain potentiometer
(Front). To achieve the highest possible measured value resolution, you should
use the maximum output voltage of the amplifier (10V).
Partialload
Nominalload

Meas.rangeinV
10V
 SensitivityinmVV  Nom.meas.range(Range)inmV
V
The table shows the measuring ranges that can be adjusted with GAIN
dependent on the bridge excitation voltage V
E
.
GAIN V
E
= 5V V
E
= 10V
mV/V mV/V
1 11.76 - 25 (factory setting) 5.88 - 12.5 (factory setting)
2 6.06 - 12.9 3.03 - 6.45
3 2.94 - 6.25 1.47 - 3.125
4 1.54 - 3.28 0.77 - 1.64
5 0.84 - 1.74 0.42 - 0.87
6 0.46 - 0.96 0.23 - 0.48
7 0.234 - 0.5 0.117 - 0.25
8 Not used Not used