Metallux ME78x and MEP78x pressure sensors are made with a ceramic base plate and a flush diaphragm and work following the piezoresistive principle. The Wheatstone bridge is screen printed on one side of the flush ceramic diaphragm which, is in turn, glued to the sensor’s body. The bridge faces the inside where a cavity is made. Signal conditioning electronics are directly integrated on the ceramic to generate 0.5...4.5 V ratiometric output (ME780) or I2C digital output code (ME782). Pressure and temperature calibration are done electronically with the onboard ASIC and can be performed in bar (ME78x) or in psi (MEP78x). Electronics provides offset and span correction when the temperature changes. Aging detection is constantly performed. This new method guarantees good precision and long-term stability. The Metallux ME78x family meets EMC requirements. The ASIC stores production lot specific data for sensor traceability and allows custom calibration. Due to the excellent chemical immunity of the the Al2O3 ceramic, the ME78x sensors are suitable for nearly all aggressive media. Metallux ME78x are patented pressure sensors.
Excellent resistance to corrosion and abrasion
Fully integrated signal conditioning
Zero stress mounting software