Is it Time To Replace Your Pressure Mapping Sensor?

Evaluating Sensor Performance Shouldn't Be a Guessing Game

We at Tekscan manufacture our sensors for maximum durability to provide you with the best performance for your investment. However, over time and through repeated loading, individual force sensing elements will eventually start to vary in sensitivity.

This is not your fault -- depending on the frequency or type of loading the sensor endures over its time in service, some sensors may last longer than others. If you're starting to suspect if your sensor may not be outputting as well as it should, using an Equilibration Device can help you improve sensor accuracy and lifespan.

What Exactly is an Equilibration Device?

Equilibration devices are used to normalize all sensing elements on a single sensing sheet by pressing a uniform pressure against the sensor. As the diagram below shows, a sensor (connected to scanning electronics) is inserted into an enclosed housing unit with a bladder membrane. The operator applies pressure from the membrane -- much like the effect of pressing and inflated balloon against a flat surface -- which allows the user to easily see and quantify variations in the sensor from their I-Scan™ software.

Equilibration devices are available in various pressure ranges, with some units requiring external compressed air to generate pressure to the bladder.

Diagram of Equilibration DeviceDiagram of Equilibration Device

How Can Equilibrators Evaluate Sensor Performance Over Time?

The figure below shows a sequence of how equilibrators can help both improve accuracy of the sensor, and extend sensor life. The image on the far right shows how regions of decreased activity may start to appear in the I-Scan software over time. Equilibration will help normalize these abnormalities.

HOWEVER, wear on the sensor may become so great, that equilibration may no longer be effective. In this case, it may be time to invest in a replacement sensor.

Have any questions about equilibration? Post them below in the comments section, or contact a Pressure Mapping sales representative today.

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