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Piezoresistive Pressure Transducers
Piezoresistive pressure transducers are fundamentally a device that converts an applied pressure into an electrical signal. It also can be called: piezoresistive OEM capsules or piezoresistive pressure sensor elements. A high-sensitivity piezoresistive silicon chip is used for pressure sensing. The chip is protected against ambient influences by a stainless steel housing sealed with a concentrically corrugated diaphragm. The housing is filled with silicone oil so as to ensure the transfer of the pressure from the diaphragm to the sensing component. Several millions of these pressure transducers are in use world-wide in a variety of different applications. Main fields of application are: Level technology, pneumatics, hydraulics, avionics.
SS105T series media isolated oem pressure transducer developed based on the SS105 series, a temperature-compensation-PCB is used to do the temperature corrections. It has a better performance than SS105 series and keep the compact dimension as the SS105 series. A high-sensitivity piezoresistive silicon chip is built in as the pressure-sensing element. Pressure is transmitted via an oil filling. The upstream separating diaphragm completely isolates the pressure chip from the medium to be measured. Typical application: industrial process control, liquid pressure system and switch, pressure inspection meter...
SS103T series piezoresistive pressure transducer capsules offer external temperature compensation, is temperature compensated based on the ultrathin SS103 series, a temperature-compensation-circuit-board is fixed on the external topside of stainless steel isolated construction housing. This makes the SS103T piezoresistive pressure sensor capsules have a height of 5.6mm only and also keep a good performance same as SS102 series. Pressure measurement application to all gases and liquids compatible with stainless steel 316L.
SS121E21 series piezoresistive effect pressure sensors are developed for pressure applications that involve measurement of hostile media in harsh environments compatible with 316L stainless steel. They are calibrated and temperature compensated, available for use with either a constant voltage or current source. They feature a variety of pressure connections to allow use in a wide range of OEM equipment. SS121E21 series are rugged and reliable transducers for use in a wide variety of pressure sensing applications where corrosive liquids or gases are monitored.
SS121C series low cost OEM pressure transducer use a viton material O-ring inside to seal the transducer (all stainless steel structure is on request), a stainless steel cap is welded together with the housing to protect the inner structure from moist or accident damage by human, the electrical connection is cable, all these make the SS121C more suitable to used in the industrial field directly. A high-sensitivity piezoresistive silicon chip is used for pressure sensing. The chip is protected against ambient influences by a stainless steel housing sealed with a concentrically corrugated diaphragm. All these makes SS121C series isolated pressure sensors mv output have a good performance in various medium.
SS121E27 series piezoresistive standard pressure transducers are of all welded stainless steel construction, with integral media isolation diaphragm. No 'O'ring seals are used, maximum pressure range up to 20MPa.The size of housing, and the pressure/screw connection can be designed according to the demand. The high stable high accuracy piezoresistive silicon chip used inside makes the SS121E have a great working performance, the accuracy can be 0.25%FS, offering improved reliability and significantly lower production costs. Two types of electrical connections pins or wires is optional. The SS121E series piezoresistive oem pressure transducers are the ideal basis for pressure transmitters, pressure switches or digital pressure instruments.
SS119 series miniature gauge pressure transducer is a low cost type piezoresistive pressure sensor, it has compact structure, but temperature compensated. The sensing parts-silicon chip is exposed to the air, not protected by oil or gel, this makes the SS119 series mini pressure sensor high sensitivity, the minimum pressure could be 5KPa, but this exposed silicon chip also limit its application, typically to measure non-conductive, non-corrosive gas, typically air pressure.
