Relative pressure transmitter 664F(F)

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Model 664F(f) pressure sensor (PS) features a flush diaphragm. This feature is especially useful when the PS measures the pressure either of sticky pressure medium, like viscous paste, or of pressure medium containing solid particles, like wasted water. The diaphragm is welded together with the sensor housing so as to avoid any O-ring inside the PS for a beter reliability of the PS. The same as 664F(c), the 664F(f) PS has a metal foil strain gauge (e.g., BCM KA-type diaphragm strain gauge) bonded on its diaphragm to form the Wheatstone bridge circuit. Thanks to the metal foil strain gauge, the PS of 664F-series has a lowest temperature effect among all the PS from BCM SENSOR. A variety of output signals are available, e.g., mV/V signal directly from the Wheatstone bridge circuit, ratiometric signal of 10%~90%Vs, 0~5V, or digital signal of I2C or SPI protocols via an SSC (sensor signal conditioner) which is fixed at the PS backside. The 664F(f) PS is mostly used to build pressure transmitters by adding both an SSC at its backside, a housing for SSC via its M24x1 threads and a connector for both power supply and signal output.