Measuring
Adapting to the transducer
MGCplus A0534-30.0 HBM: public 135
7.3 Adapting to the transducer
7.3.1 SG transducers
SG transducers (load cells and force transducer from HBM) are passive
transducers that have the following features:
S They must be supplied with an excitation voltage (carrier frequency or
direct voltage)
S They are SG full bridge circuits
S The transducer is identified by the following data:
- Maximum capacity (for example 20 kg)
- Nominal (rated) sensitivity (for example 2 mV/V)
These data items must be taken into consideration when adapting the
amplifier.
The standard setting for the excitation voltage U
B
with SG full bridge circuits
is 5 V. If higher measuring ranges are required or multiple transducers are
connected in parallel, a lower excitation voltage must be selected. The
individual values depend on which module is used.
Amplifier
Measuring range limits (mV/V)
U
B
=10V U
B
=5V U
B
=2.5V U
B
=1V
ML10B 0.1...3.06 0.2...6.12 0.4...12.2
4
1.0...30.6
ML30B - 0.1...3.06 0.2...6.12 0.5...15.3
ML38B - 0.2...5.1 0.4...10.2 -
ML55B - 0.1...3.06 0.2...6.12 0.5...15.3
With these measuring range limits, depending on the setting, a voltage of 1
V ... 10 V can be generated on the analog output.
Important
The specified full scale values are maximum values that cannot be affected
by settings of the analog output!
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