Calibration Signal; Measuring Frequency Range / Cut-Off Frequency Fco - HBM ME50S6 Bedienungsanleitung

16
c) External Zero Balancing
A potentiometer of 50 kΩ, which can be connected externally, can be used for
settings within a balancing range of "0.12 mV/V set by the manufacturer.
Pin assignment:
potentiometer . . . . . . . . . . . . . . . . .
wiper . . . . . . . . . . . . . . . . . . . . . . . .
potentiometer finish

4.5 Calibration Signal

The measuring amplifier ME50S6 operates on a 6-wire technique, i.e. the cal-
ibration and zero compensation signals are formed from the bridge supply
voltage fed back; thus they are independent of transducer, connecting cable
and pin resistances. If necessary, the sensitivity of the measuring amplifier
can be adjusted by means of an internal calibration signal of +1 mV/V with
measurimg ramges > 1mV/V. Here the switch S21 must be kept in the calibra-
tion position and the appropriate value must be be set simultaneously by
means of the potentiometers P21 resp. P22. When using the factory settings
calibration measuring range 2 the setting of P22 must be altered. (see chapter
3.3).
4.6 Measuring Frequency Range / Cut-off Frequency f
The Butterworth low pass of the amplifier has been set to 0...250 Hz (−1 dB)
by the manufacturer. It can be readjusted by switching the DIP switch S24/3 to
0...40 Hz (−1 dB).
Measuring frequency range
0...250 Hz (−1 dB)
HBM
pin 26c
pin 21c
. . . . . . . . . . . . pin 24c
(factory settings)
0...40 Hz (−1 dB);
ME50S6
R=50 kΩ
co
S 24/3
A0260−3.0 en/de/fr