Home / Sensors / Pressure Sensor / Keller Pressure Transducer / Keller Piezoresistive Pressure Transducer Series Series 2,3 and 4
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The pressure sensor is a piezoresistive measuring cell consisting of a glass back plate and the silicon chip with the diffused resistor bridge. The cell is mounted on a glass feed through and packaged in a housing for easy pressure connection. The high, stable and reliable output signal
of the sensor can easily be conditioned with standard amplifiers.
All sensors are tested for temperature, stability and linearity and are delivered with an individual calibration sheet.
Series 2:
The medium is acting directly on the silicon chip and comes into contact with the strain gauges of the Wheatstone bridge. Application in dry air only.
Series 3 :
The sensor is mounted in an aluminium housing. Housing and sensor are protected by a thin (7 µm) parylene layer. This layer grants full protection in applications where condensation may occur. Continuous water exposure is not recommended. The average time of water resistance of
the parylene layer is 6 months.
Series 4:
The medium acts on the rear side of the silicon chip. The pressure medium may be wet.
Applications in gas, water and non-agressive fluids with benign reference atmosphere. Ideal for negative pressure measurements.
Typical Applications:
Barometric, deltagliders, small airplanes, meteorology, pneumatic control instruments, robotic, sanitary and pharmaceutical gases, air conditioning.