Miniature Pressure Transducer

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Ideal for close proximity measurement in confined spaces

Sensor Technology

Miniature Pressure Transducer
Miniature Pressure Transducer

The piezoresistive pressure transducers Series M5 from Keller are ideal, thanks to the M5 fine thread, for taking measurements at close proximity in places where access is a problem and in very thin pipes – exactly the kinds of conditions associated with engine test benches. The front-flush design prevents gas bubbles interfering with fluid measurements and supports measurements up to 200 °C without a cooling adapter. The extreme dynamic range of 0…50 kHz makes it possible to record very fast pulsations just as reliably as those associated with static pressure values. A vibration-resistant Teflon FEP cable (IP67) ensures the 80 mV output signal is routed securely out of the hot environment and then onwards for processing.

Sensor technology

The Series M5 sensor incorporates a stable silicon sensor which is backside-soldered directly to a supporting element designed for excellent fluid dynamics. This construction eliminates the disadvantages of sealants, adhesives, separating membranes or capillary tubes in high temperature environments. The practically-flush connection to the measurement media is critical to the excellent dynamic range of 0…50 kHz. The micromechanical design delivers absolute measuring ranges of 3, 10 and 30 bar, overpressure protection of up to 5 times measuring range
and effective isolation of mounting forces, and a very low dead volume.

Conditions of use

Thanks to the materials used in the pressure connection (silicon oxide, stainless steel, and gold), the pressure transducers in the M5 series offer excellent media compatibility. They are designed for operating temperatures between -50 °C and +180 °C and come with a typical output signal range of 80 mV (based on a 1 mA supply) and an individual calibration certificate. The unit which incorporates a remote measurement amplifier is known as the Series M5 HB (see the data sheet) and can achieve a total error band of ± 1 %FS for the operating temperature range.

Posted on November 9, 2016 - (444 views)
Keller AG Für Druckmesstechnik
St. Gallerstrasse 119 Postfach
8404 Winterthur - Switzerland
+41-52-2352525
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