Linear sensors have many uses, they can be either contacting or non-contacting and within the two different types there are different technologies used.
Contacting and non-contacting linear sensors can be used within the same applications and essentially take the same measurements.
There are many advantages to using non-contact linear sensors. Many of these are due to the fact they are wear free;
Non-contact linear sensors are suitable for different applications and the type of application will help to determine which type of non-contact technology should be used.
Eddy current is an inductive measurement method which uses the extraction of energy from an oscillating circuit. It uses alternating magnetic currents to determine the position of the given object. Eddy current sensors are relatively small so this measuring method is suited for applications with limited space. They are able to operate in a high temperature range which is another factor when choosing a sensor for your application. For more information on this type of non-contact linear sensor take a look at our sister company Ixthus Instrumentation.
Inductive sensors work on a transformer principle and use alternating currents to measure linear position. They are well used in high dynamic positioning tasks for a variety of industries. They are unaffected by magnetic fields. Find out more about Inductive Sensors here.
LVDTs (linear variable differential transformer) use metal coils and a metal core. They can measure movements as small as a millionth of an inch up to several inches and further depending on the range of the sensor. Find out more about LVDTs here.
Positek PIPS is a patented technology from our sister company Positek. PIPS ( Positek Inductive Position Sensor Technology) is similar to the LVDT principle but it only uses one coil which gives a better stroke to length ratio. A high frequency coil is used as the sensing element enabling fewer coil turns than that of an LVDT which also improves durability. Find out more about PIPS here.
Non-contact linear sensors are often used in the following applications;
If you would like more information on any of the products we can offer or products from Positek or Ixthus please contact us.
For more information please contact: Variohm EuroSensors Ltd Email: email@example.com Tel:+44 (0) 1327 351004 Fax: +44 (0) 1327 353564
Article date: 22 / Aug / 2019
Advantages of Non-Contact Linear Sensors
Published by: Variohm EuroSensor
From 20th January 2017 Variohm Eurosensor Ltd is part of the discoverIE plc Group of companies
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