Technical Blog

Buyers Guide to Displacement Transducer

Position sensors are an essential component of many industrial equipment and machines. With the variety of applications where sensors are required, it is vital to ensure that proper selection methods are employed. Using the right sensor is crucial to the operation of a machine. Engineers cannot use

Position sensors are an essential component of many industrial equipment and machines. With the variety of applications where sensors are required, it is vital to ensure that proper selection methods are employed. Using the right sensor is crucial to the operation of a machine. Engineers cannot use a sensor that does not fit the desired application especially if the equipment operates in hazardous conditions.

A displacement transducer is one of the most commonly used sensors across different industries. Also called an lvdt sensor, a linear
displacement transducer has a robust mechanism and contactless technology favoured in applications with constant exposure to difficult conditions. Different parameters distinguish one type of linear sensor from another. The following are specific factors that guide in finding the right sensor:

• Measurement accuracy required

• Characteristic of material

• Shape and application

• Working environment

• Installation costs and number of devices that require the use of sensors

Further explained in this article are tips on how these parameters help the suitability of a sensor for a specific application.

Selecting based on measurement accuracy required


The measurement accuracy of a linear sensor can vary depending on the measurement device used. It also matters that you can determine the desired measurement range. Another determining factor is whether the measurement is expressed in degrees, inches, millimetres, or centimetres.

Shape and application

Some types of lvdt transducer are not compatible with hydraulic applications. Nevertheless, advanced sensors have been developed to work well even with hydraulic machines.

Working environment


A crucial factor in buying an lvdt linear displacement transducer is the working environment. Corrosive elements, extreme heat, and cold temperatures, as well as sharp movements, can lead to the wear and tear of sensors. As such, when choosing a displacement transducer, you have to take into account if it is robust enough to perform in such conditions. Positek's
linear sensors are manufactured with patented contactless technology for improved performance in extreme environments. You can also find sensors with the right environmental sealing needed in some of the most sensitive applications.

Installation costs


The cost of sensors needs to be factored into the selection process as well. You may check prices from suppliers like Positek and verify if it fits the budget. As much as possible, you must always consider the quality of the
lvdt displacement transducer first before compromising on the price. It is more important to buy from a trusted supplier to ensure that sensors are of the highest fabrication quality.

In instances when you can't find the specific sensor for your desired application, Positek offers customisation. You can contact their qualified engineers to consult and design the perfect sensor for you. They will manufacture your custom sensor in an in-house facility ready for delivery in a matter of days.

Article published on: 21/09/2018