Ready-to-mount capacitive ceramic pressure sensor modules

The DSK 720M is a ready-to-assemble capacitive ceramic pressure sensor module that offers extremely high over-pressure performance across a range of nominal pressures from 100mbar to 50bar.

The sensor modules also offer high accuracy but low thermal errors in fluctuating temperatures. Ambient operating temperatures are from -40°C to +105°C, with a version also available that is rated up to +125°C.

Designed specifically as a cost effective module for OEMs and machine builders, the DSK 720M can also be configured and programmed by the customer via an integrated interface. Output signal is a ratiometric voltage output as standard, making the sensor module fully signal conditioned and compensated. There’s an optional I2C interface for localised bus configuration, giving the user serial communications with the sensor.

An optional configuration kit is also available, which enables the OEM to reconfigure the DSK 720M for different end user applications. The module is simply connected to a PC via the interface and menu-driven programming software is used to calibrate pressures, configure starting points and end points of the pressure range, damping and offset adjustment.

The sensor modules operate at a very low supply voltage of 2.7-5.5Vdc. The modules can therefore be powered from a standard 3.6V lithium battery. 

The DSK 720M has a 96 percent ceramic membrane as standard. A version with a 99.9 percent ceramic membrane is also available, providing the sensor module with improved protection against chemicals and other aggressive media.

A lower cost version of the DSK 720M is also available from Impress Sensors & Systems. The DSK 720L is a ready to mount capacitive ceramic pressure sensor that requires some form of protective housing or Faraday cage before it can be assembled into OEM machine designs and instrumentation.