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6.3.3 Adjustment of the input filter
The cutoff frequency of the 3DB input filter is adjusted by pot “filter”.
Left Stop: Right Stop:
Cutoff Frequency = 1kHz Cutoff Frequency = 10Hz
The use of the filter is appropriate if interferences are on the measuring signal. This can occur if fre-
quency converters or other power electronics are close by the measuring system, or if sensor cables in
channels were laid parallel to power lines. However, the time constant should not be selected too large,
otherwise the dynamic of the measurement system will be reduced
6.4 Adjustment Description
6.4.1 Zero point adjustment
Connect digital voltmeter (measuring range: 19,999V) to GND Out and U Out. Adjust output to 0,000V
with pot zero point. If the pot adjustment range is not sufficient due to a larger preload, the zero point
can be shifted via coding switch S3-S5.
6.4.2 Adjustment to 100% control signal (if available, see sensor data sheet)
1. Connect digital voltmeter (measuring range: 19,999V) to GND Out and U Out.
2. Apply operating voltage, sensor must be installed, but it must be unloaded!
3. Adjust output to 0,000V with zero point pot, for this, see zero point adjustment.
4. Activate 100% control signal with S1. Set output to +10,000V (+5,000V)
with pot gain.
5. Switch off 100% control signal and check zero point – if necessary repeat the adjustment.
6.4.3 Adjustment by nominal load (weights, reference load, reference torque...)
1.) Connect digital voltmeter (measuring range: 19,999V) to GND Out and U Out.
2.) Adjust output to 0,000V with zero point pot, for this, see zero point adjustment.
3.) Apply 100% nominal load (weights, reference pressure…)
4.) Set output to +10,000V (+5,000V) with pot gain.
5.) Unload sensor and check zero point – if necessary repeat the adjustment.
6.4.4 Adjustment via reference - mV – voltage source
1.) Connect “Supply -“ with “Signal –“.
2.) Connect mV – voltage source to “Signal –“ and “Signal +”.
3.) Connect digital voltmeter (measuring range: 19,999V) to GND Out and U Out.
4.) Set mV voltage source to 0,000mV. Set output to 0,000V with pot gain.
5.) Preset nominal input signal (e.g. 10,00mV/V) via mV voltage source. Set output to
+10,000V (+5,000V) with pot gain.
6.) Disconnect mV voltage source and remove bridge “Supply –“ to “Signal –“.
7.) Connect sensor. If necessary correct zero point with pot zero point, for this see zero point
adjustment.
6.4.5 Adjustment to current output 4-20 mA (option 0-20mA, 12-20mA, 10-20mA)
The adjustment with current output is the same procedure as the adjustment of the voltage output.
However, the digital measuring device with current range of 20,0mA must be connected to terminals
GND Out and I Out. For voltage values 0V and +10,000V (+5,000V), currents 4mA (and/or 0, 10 or
12mA) and 20mA are applied.
