Miniaturized intelligent differential pressure / pressure transmitter

Abstract

The invention discloses a small intelligent differential pressure / pressure transducer, where there is an electronic box sealed and fixed at the upper part of a sensor component, the lower part of the sensor component provided with pressurized seal ring is fixed with a pressure flange component, the sensor component is provided with a capacitance differential pressure sensor and a temperature sensor under a chamber, there is a group of protective rings and welded rings outside the two sensors, there are terminals in the left cavity of the electronic box, the top end of the left cavity is provided with a magnetic button, there is a printed circuit board (PCB) in the right cavity of the electronic box, and the PCB is mounted with dry reed tube and connected with a display. It can be widely applied to the departs such as chemical, petroleum, metallurgy and circuit boards, for measuring the thermal basic parameters such as pressures, liquid levels and differential pressures of liquids, gases and steams.

Description

technical field [0001] The invention belongs to a differential pressure / pressure transmitter that uses the principle of capacitance change to detect pressure signals. It is widely used in chemical industry, petroleum, metallurgy, power station and other departments to measure the pressure, liquid Basic thermal parameters such as position and differential pressure. Background technique [0002] The transmitter is composed of a measuring component composed of a differential capacitance membrane box, an electronic detection amplification and signal processing circuit composed of a microprocessor, and a communication circuit composed of a dedicated communication chip. With the support of a computer program (software), the required measurement and communication tasks. [0003] The measured pressure acts on the isolation diaphragm of the measuring part of the differential capacitance bellows, and is transmitted to the central working diaphragm of the differential capacitance bell...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to overcome the defects of existing differential pressure / pressure transmitters such as complex structure, large volume, high manufacturing cost of capacitive sensor components, and single function, and provides a multifunctional differential capacitive sensor component with independent detection function, which is easy to assemble , debugging and communication function block conversion miniaturized transmitter

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