Inductive Transducers; Inductive Full Bridge - HBM Spider8 Operating Manual

Connecting Ý Connecting transducers

3.2 Inductive transducers

1
8
9
15
15-pin socket
Connection to carrier-frequency module SR55
3.2.1

Inductive full bridge

Inductive transducers - whether half bridge or full bridge - are
passive transducers with the following features:
•
The transducers must be supplied with an excitation voltage
(carrier-frequency)
•
They are inductive half bridges
•
A transducer is characterised by the following data
- Nominal displacement (e.g. 20mm)
- Nominal sensitivity (e.g. 10mV/V)
Typical inductive transducers are displacement transducers.
Inward core movement: display +
outward core movement: display -
wh
8
rd
15
bk
5
bu
6
gn
13
gy
12
D-17
15-pin socket
1 Measurement signal
4 Measurement signal
Bridge excitation
2
voltage
3
Bridge excitation
voltage
3' Sensor circuit
2'
Sensor circuit
Spider8