Functional Principle, Technical Data
Fig. 2 Output signal of an inductive displacement sensor based on the LVDT principle
The mechanical zero point is different in every sensor, so that even with several sensors of the same type a
single measurement with a calliper gauge is not sufficient.
A controller (available from MICRO-EPSILON MESSTECHNIK GmbH & Co. KG) transforms the differential
signal of the two secondary coils into a stable direct voltage/current output signal.
2.1
Inductive LVDT gauges are available in two versions:
- Gauges
- Gauges with pneumatic push
induSENSOR, Series LVDT, Gauge
+ Signal
100 %
- Displacement
Signal
-
Measuring range
Linear range
Structure
The plunger is implemented as a probe tip. The built-in spring presses the probe tip against the measuring
object. The plain bearing provides guidance for the probe tip.
The integrated spring retracts the probe tip. By applying compressed air it is moved toward the target.
100 %
+ Displacement
Page 26