Ultra-Fast Miniature Pressure Transducer Series M5


Catalog excerpts

Ultra-Fast Miniature Pressure Transducer Series M5 - 1

Ultra-Fast Miniature Pressure Transducer The piezoresistive pressure transducers Series M5 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. Performance characteristics • Sensor head capable of exposure to 200 °C • Broad compensated temperature range, with a choice of either -20…125 °C or -40…180 °C • Excellent dynamic response, up to 50 kHz (pulsation measurements) • Insensitive to structure-borne vibration • Extremely compact design, pressure connection: M5 x 0,5 fine thread • Teflon FEP cable with IP67 ferrule, suitable for use on test benches • Pressure ranges of 3 bar, 10 bar and 30 bar (absolute) ELECTRICAL CONNECTIONS Measurement Bridge Shield (wire mesh) Comments - The R1 or R2 resistor provides pre-compensation for the zero-point variation with temperature. The recommended value can be found in the calibration sheet. - The shield is connected to the pressure transducer housing. - Recommended tightening torque 1,5…2,5 Nm KELLER AG für Druckmesstechnik CH-8404 Winterthur +41 52 235 25 25 info@keller-druck.com KELLER Ges. für Druckmesstechnik mbH D-79798 Jestetten +49 7745 9214 0 eurocenter@keller-druck.com Edition 10/2015 Subject to alterations Companies approved

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Ultra-Fast Miniature Pressure Transducer Series M5 - 2

Absolute pressure ranges PAA 3 10 Overpressure / burst pressure 15 50 PAA: Absolute pressure. Zero at vacuum. Calibrated Temperature Range (choice of) -20...125 °C or -40...180 °C Operating Temperature Range -50.180 °C 1) Bridge resistance as a function of temperature: RB(T) = RB ■ [1 + a_RB ■ (T-25 °C) + p_RB ■ (T-25 °C)2] 2) Signals at a constant excitation current of 1,0 mA Electrical Connections Insulation Pressure Connection Materials in Contact with Media Media Compatibility Protection Options Each sensor is measured as a function of pressure and temperature. The...

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