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SEN-100 Silicon on Sapphire Aerospace/Military Pressure/Temperature Transducer
Aerospace, Flight Testing, Jet Engine Testing, Materials Testing
Description

Silicon-on- Sapphire Pressure Transducers unsurpassed levels of perform ance for aerospace and other precision measurements. They provide high (5mV/V) sensitivity with excellent accuracy and stability over widely varying temperatures ranging to as low as “320°F or as high as +750F and are compatible with virtually all media encountered in unfriendly environments.

Sensonetics piezoresistive strain gages are epitaxially grown onto a sapphire diaphragm to form a homogeneous single-crystal radiation-hardened structure with virtually undetectable hysteresis or non-repeatability. Since sapphire is a perfect electrical insulator, there is no need for diode isolation junctions founds in traditional silicon pressure transducers. This feature, coupled with sapphire™s modulus of elasticity, which is 30% greater than that of stainless steel, enables high temperature operation not previously attainable.

A proprietary hermetic seal between the sapphire diaphragm and the electron-beam welded stainless steel case provides the ultimate in temperature coefficient match between internal structures. The seal also allows direct contact with corrosive and conductive media without use of barrier diaphragms or transfer of fluids.

Sensonetics pressure transducers are designed to comply with MIL standards for vibration, acceleration, shock, sand, dust, salt, humidity, EMI and other environments. The case is internally stress isolated to inhibit response to mounting torque and other external stresses.

See Specification Data Sheet