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Miniaturized intelligent differential pressure / pressure transmitter

A transmitter and pressure technology, which is applied in fluid pressure measurement, instruments, and measuring devices using capacitance changes, can solve the problems of high manufacturing cost, single function, and complex structure of capacitive sensor components, so as to facilitate independent detection and reduce Production cost, effect of improving sealing performance

Active Publication Date: 2006-07-05
SHANGHAI AUTOMATION INSTRAION CO LTD
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  • Abstract
  • Description
  • Claims
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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

Method used

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  • Miniaturized intelligent differential pressure / pressure transmitter
  • Miniaturized intelligent differential pressure / pressure transmitter
  • Miniaturized intelligent differential pressure / pressure transmitter

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] like figure 1 As shown, the sensor assembly 10 equipped with the pressure sealing ring 11 and the pressure flange assembly 12 are connected together through bolts 13, and the electronic box 3 is installed on the upper part of the sensor assembly 10, which is connected by threads, and the sealing ring 5 is installed in the middle. The inside of the electronic box 3 is divided into two independent chambers, the left side of which is the terminal, and the terminal 14 is arranged for connecting external wires, the right side is the electronic circuit board installation room, and the terminal 14 of the left chamber is The pin leads to the chamber on the right side, and the epoxy resin 16 is used to seal between the pin and the chamber, and a connector 9 is welded on the pin of the terminal 14, which is used for connection with the printed circuit boar...

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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 capacitor film, an electronic detection amplification and signal processing circuit composed of a microprocessor, and a communication circuit composed of a dedicated communication chip. measurement and communication tasks. [0003] The measured pressure acts on the isolation diaphragm of the differential capacitor membrane and the measuring part, and is transmitted to the central working diaphragm of the differential capacitor membrane through the sealing liquid (silicon oil), so that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L9/12G01D21/02
Inventor 田泉林
Owner SHANGHAI AUTOMATION INSTRAION CO LTD
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