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Pressure transmitter

A transmitter and pressure sensor technology, applied in the measurement of fluid pressure, instruments, fluid pressure measurement using capacitance changes, etc., can solve the problems of unable to adjust the range, unable to adjust the range

Inactive Publication Date: 2012-03-21
广东天富电气股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing pressure transmitters all have a fixed change ratio, and their range cannot be adjusted
However, the pressure shifter that cannot adjust the range is not suitable for the pressure transmitter of the intake manifold of the internal combustion engine

Method used

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Embodiment Construction

[0009] The present invention will be described in further detail below in combination with specific embodiments.

[0010] The working principle of the pressure transmitter is: the two pressures of the measured medium are passed into the high and low pressure chambers, and act on the isolation diaphragms on both sides of the delta element (that is, the sensitive element), through the isolation sheet and the filling in the element. The liquid is sent to both sides of the measuring diaphragm. The measuring diaphragm and the electrodes on the insulating sheets on both sides form a capacitor respectively. When the pressure on both sides is not consistent, the measuring diaphragm will be displaced, and the displacement is proportional to the pressure difference, so the capacitance on both sides is not equal. Through the oscillation and demodulation link, it is converted into a signal proportional to the pressure. The working principle of pressure transmitter and absolute pressure t...

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Abstract

The invention relates to a pressure transmitter, which is characterized by comprising an electronic control device and a pressure sensor. The pressure sensor is connected with the electronic control device through a signal line, the electronic control device comprises a signal processing chip and a display module, the signal processing chip is connected with the display module, a binding post is arranged on the signal processing chip and connected with the pressure sensor through a signal line. The pressure transmitter enables measuring range of the transmitter to be adjustable to be suitable for pressure measurement of an induction manifold of a combustion motor, and can enable pressure measuring range of the induction manifold in a unit full power range to correspond to 4-20 mA..

Description

technical field [0001] The invention relates to a pressure transmitter, in particular to a pressure transmitter specially used for an intake manifold of an internal combustion engine. Background technique [0002] Existing pressure transmitters all have a fixed variation ratio, and their measuring ranges cannot be adjusted. However, the pressure shifter that cannot adjust the range is not suitable for the pressure transmitter of the intake manifold of the internal combustion engine. Contents of the invention [0003] The present invention aims at the above-mentioned defects of the prior art, and provides a pressure transmitter specially used for the intake manifold of an internal combustion engine, so that the range of the displacer can be adjusted. [0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: [0005] A pressure transmitter, including an electronic control device and a pressure sens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L19/00G01L19/02G01L9/12
Inventor 郭振清
Owner 广东天富电气股份有限公司
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