Miniature strain sensors measure large forces even in confined spaces

08-07-2020 | Baumer | Test & Measurement

Complementing the Baumer portfolio is the miniature-format strain sensors DST20, adding a compact and cost-efficient solution for measuring large forces above 10,000N even in confined spaces. With dimensions of 28mm x 12mm x 10mm, the sensors provide space savings that are claimed to be unmatched by any other screw-on strain sensor on the market. The stainless steel housing and certification for the IP65 degree of protection make them ideal for usage in rough production environments and a wide range of applications, including mechanical and equipment engineering as well as process automation. The strain sensor can be incorporated into a machine with minimal engineering effort and provides a lasting solution that can serially replace cold bonded strain gauges in limited installation spaces, based on initial tests in an experimental laboratory.


Similar to other strain sensors in the company portfolio, the compact sensors are based on the strain gauge technology with a strain gauge and a strained body. The soft geometry on the interior minimises hardening of the structure to be measured. This makes the sensor ideal for static as well as dynamic applications. Thin structures can be monitored as well because of the limited reaction forces on the screws.


The sensors come in two measurement ranges: 500µm/m and 1,000µm/m, for different customer demands in terms of the predicted strains and allowed mechanical tension, depending on the steel quality. This way, a single sensor can be employed to cover a great number of applications, enabling users to lessen costs and warehouse space.

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