Correct sensor selection leads to more precise measurement
The heart of a pressure transmitter has always been the sensor. The sensor has to work often under the most adverse process conditions. The right technology for the application is of paramount importance when dealing with: gases, liquids, abrasive and corrosive media. Incorrect decisions on the selection of the pressure-sensing technology may cause inaccurate measured values or contaminated process media and, thus, a higher risk of failures in the application. An incorrect sensor choice can be costly, requiring more frequent calibrations or the replacement of the instrument. The correct sensor selection leads to more precise measurement which supports tighter process control and decreased variability. There are different pressure measuring technologies on the market: Mono and poly crystalline silicon sensors; thin film strain gauge on stainless steel sensors; ceramic thick film DMS sensors and capacitive ceramic sensors. All technologies have strengths and weaknesses, but none of them can serve all applications
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