PMD260 series differential air pressure sensor adopts silicon MEMS micro-pressure chip, after temperature compensation, linear compensation, signal amplification, V/I conversion, surge discharge, reverse polarity protection and other transmission circuit signal processing, output industry standard 4 ~20mA signal. All digital calibration, no movable potentiometer, temperature drift performance and stability are improved.
This series of products adopts two kinds of isolation methods of chips. For products with a range of less than 5kPa, the chip is protected by elastic silicone gel, which is mainly used for differential pressure measurement of non-corrosive gases of silicon and silicone gel; the range of 5kPa and above, the chip is protected by a 316L stainless steel isolation diaphragm, filled with silicone oil, It is suitable for medium measurement without corrosion to stainless steel.
