NEW: piezoresistive pressure sensor by KELLER

High-Temperature OEM Pressure Transducer Series 7 LI

200 °C / 200…1000 bar

7 LI series OEM pressure transducers, ø 15 mm, are designed for high-pressure and hightemperature applications.

Robust and corrosion-resistant

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.

The fully heat-sealed housing and the laser-welded separating diaphragm are made of Inconel 718, which aside from its strength also guarantees a high resistance to aggressive media.

High sensitivity

Thanks to the piezoresistive technology, the typical full signal output for all available measuring ranges is 150 mV with a constant current supply of 1 mA.

Flexible use

The absolute pressure transducers are available in four nominal measuring ranges from 200 to 1000 bar, with a maximum permissible operating temperature of 200 °C. The transducer may optionally be provided with an integrated PT100 or PT1000 temperature probe, making independent temperature detection possible.

Quality

Each pressure transducer is carefully tested for pressure and temperature properties, and is supplied together with an individual calibration sheet setting out its characteristic values and the results of all tests carried out. Special testing programmes can be carried out on request.

For high-precision compensation, a mathematical model can be established over the desired pressure and temperature range.