The leader in Silicon-On-Sapphire High Temperature Pressure Transducer Technology
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SEN-1000 Downhole Subminiature Pressure & Temperature Transmitters
Livewire Logging, Cementing, Fracturing, Measurement While Drilling, Logging, Wellhead Measurements, Logging While Drilling

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 fl‚uids.

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. On diaphragm silicon RTD is constant identical to that of the silicon strain gages and is used as a reference to enhance data error correction when using curve-fitting algorithm or lookup tables. This option may also be used for temperature measurement in some applications.

Sensonetics pressure transducers enable aircraft and aerospace engineers to perform critical measurements with greater accuracy and over broader temperature ranges then previously possible. Series 100 Transducers are available in several pressure and vacuum configurations with standard ranges from 0-5psi to 0-10,000 psi and with a choice of three levels of accuracy and stability.

See Specification Data Sheet