Measurement Specialities’ ICSensors Division has released a piezo-resistive pressure cell for pressure sensing from 1000psi to 5000psi in absolute or sealed gauge versions.
A stainless steel diaphragm transmits the external pressure to a micro-machined silicon die via the sealed silicone fluid. The constant current fed bridge in the silicon-die provides a nominal output of 100mV via temperature-compensating circuits.
±0.25% interchangeability between the spans of different sensors is provided by means of the built-in gain-set resistor as is ±0.25% pressure linearity with a maximum temperature error of ±1.0% all coming as standard. Thus, new discrete pressure sensors provide the electronics world with an enhanced solid state high performance device of small dimensions and intrinsic reliability.
A number of different fittings are available including a threaded process fitting with1/4 inch NPT or 1/4G and hex mounting, or the more simple back end option.
Electrical terminations are by means of cable, connector-on-ribbon or solder-pins.