Displacement transducers
MSX-E3701-DIO
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3.1.2
LVDT transducers
An LVDT transducer features three coils: a primary coil and two secondary coils. These coils are
positioned concentrically around the mobile core and form two symmetrical transformers with respect
to the electrical zero point of the transducer.
The primary coil is fed by two sinusoidal voltage signals, i. e. a positive and a negative one, whereas
both secondary coils (switched in phase opposition) produce an electrical signal proportional to the
measured displacement.
Fig. 3-2: LVDT transducer
3.2
Transducer properties
In the
ConfigTools
program, in the User database, the following properties of a transducer can be
defined:
•
Name
•
Type
•
Nominal frequency (Hz)
•
Impedance (ohms)
•
Nominal supply voltage V
eff
(V
rms
)
•
Sensitivity (mV/V/mm)
•
Measurement range (mm).
