The DSK 701C from Impress Sensors & Systems is a ready-to-assemble capacitive ceramic pressure sensor module for OEMs that offers pressure ranges from 20 bar down to 60mbar with high over-pressure resistance. An additional benefit to OEMs is that the module is Zone 0: II 1G Ex ia IIC T4 certified. The unit can be configured and programmed by the customer via an integrated RS232 interface. An optional configuration kit is available, which enables the OEM to reconfigure sensors for different end user applications. The module is simply connected to a PC via the RS232 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 DSK 701C has a ceramic membrane and offers a high turn down ratio of 10:1, without sacrificing accuracy. For example, a 1 bar rated sensor module can be turned down to 100mbar, but the accuracy remains at 0.1% and over-pressure of 8bar is permissible.
The modules are available in gauge and absolute versions with a 4-20mA output signal. Response time is 120ms (without electronic damping) and operating temperature range is from –40 deg C to +125 deg C. The unit is supplied with a PTFE filter as standard, and a brass venting tube option is also available.