Manual BA 627
Page 4 of 8
Technical changes reserved. 08/2018
A.S.T. - Angewandte System Technik GmbH, Mess- und Regeltechnik
2.4. Zero alignment (Zero >0<)
Use the
R31 Zero >0<
potentiometer of the measuring amplifier to align zero.
2.5. Zero range (S3-2)
Select the range of the zero point
0,35 mV/V
or
0,15 mV/V
with the DIP-switch
S3-2
.
(see
too 2.4).
NOTE
With the zero range
0,15 mV/V
its possible to adjust the zero point more
exactly.
2.6. Amplification (Gain fine)
Use the
R34 Gain fine
potentiometer of the measuring amplifier to align output signal. The
adjustment range is
25 %
.
Depending on the setting the following range are possible S1 (
see too 2.2
).
Sensitivity (S1) (mV/V)
0,35
0,5
0,7
1,0
1,4
2,0
3,0
Min (mV/V)
0,28
0,4
0,56
0,8
1,12
1,6
2,4
Max (mV/V)
0,42
0,6
0,84
1,2
1,68
2,4
3,6
NOTE
Check the zero point after changing of amplification.
2.7. Cut-off-frequency (S3-1)
Select the cut-off-frequency
10 kHz
or
70 Hz
with the DIP-switch
S3-1
.
2.8. Test input
If you connect the test input
Test
with
+24V
then you create an offset of 0.5mV/V at a
350 Ohm strain gauge bridge.
The recorded value can be used for checking the measuring device.
