1. Ease Of Installation
Our range of LVDT displacement transducers
are available with a variety of body fittings and core
assemblies. These include:-
a) Axial or radial cable exit
b) Core only
c) Plain core with extension rod
d) Guided core with extension rod
e) Sprung loaded core with extension rod
f) Guided core with extension and rod end bearings
2. Material
Most of our LVDT displacement transducers are
constructed in stainless steel. For special applications,
other materials can be used on request.
3. Sealing
Some models offer standard sealing to IP65, but other
ratings are available up to IP68 for full submersible
use. Our custom-design service allows variations in the
sealing of all models. Please consult our Sales Office.
4. Robust Construction
We offer different levels of construction to suit the
application. The industrial series give a high level of
protection for harsh industrial conditions, however, for
projects which involve possible extreme mistreatment,
we recommend use of the heavy industrial series.
5. Electrical Connection
The choice of standard connections include:-
Flying cable (standard length is 2 metres - longer
lengths to order.) Types available - PVC, PTFE,
Polyurethane and armoured cables.
Connectors. Types available - Hirschmann, Military
6. Measuring Range
Each series of model types offers a wide choice of
measuring ranges. The range can be applied as a
bidirectional measurement about the zero point i.e.
±5.0mm, as a unidirectional measurement i.e. a ±5.0mm
becomes 0-10mm, or for improved linearity performance
part of the full range may be used.
7. Linearity
Our definition of linearity is that the output curve over the
quoted linear range will not deviate from a theoretical
straight line drawn through zero by more than 0.5% of
full stroke. Linearity can be improved by using a smaller
part of the total measuring range.
8. Outputs
The standard LVDT displacement transducer provides an
A.C. output and need a supporting electronic unit to
energise and condition the signal.
Some models are available with internal electronic
circuitry to give a DC in - DC out performance. A suitable
DC supply is needed and the choice of outputs
available are D.C. bipolar, 0-5V, 0-10V and 4-20mA.
9. Other Specifications To Be Considered:-
a). Temperature range. Standards are -30°C to +85°C
and -30°C to 150°C For higher temperature ranges,
please consult our Sales Office.
b). Frequency response. This is determined by the
mechanical arrangement used, the frequency of the
energising supply and the filtering characteristics of the
conditioning system.
c). Weight. The mass of transducer, in particular the
core assembly, can be important.