Pressure sensors for direct mounting onto PCBs have high sensitivity and resolution, and are tested for temperature, stability and linearity. Are piezoresistive measuring cells consisting of a glass back plate and silicon chip with diffused resistor bridge. The cell is mounted on a glass feed-through and packaged in housing. Output signal can be conditioned with standard amplifiers. Series 2 for dry-air applications acts directly on the silicon chip and comes into contact with the strain gauges of the Wheatstone bridge. Series 4 acts on the rear side of the silicon chip; is for wet or dry applications.

Keller, www.keller-pressure.co.uk

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