Multi-parameter differential pressure transducer

Abstract

The invention discloses a multi-parameter differential pressure transducer. The multi-parameter differential pressure transducer comprises a main body, a sleeve arranged at one end of the main body, atube socket arranged at an inner side of the sleeve, wherein a circuit board is arranged between the tube socket and the main body, the inside of the main body is respectively provided with an L typepositive pressure channel and a negative pressure channel, moreover, an external side face of the main body is symmetrically provided with a positive end isolation diaphragm and a negative end isolation diaphragm, and the external side faces of the positive end isolation diaphragm and the negative end are provided with a diaphragm welding ring; an adaptor table is welded between the tube socket and the main body, a gage pressure chip and an absolute pressure chip are arranged on the circuit board, positive test ends of the gage pressure chip and the absolute pressure chip are communicated with the positive end isolation diaphragm through a pressure guiding medium in the positive pressure channel, and a negative testing end of the gage pressure chip is communicated with the negative end isolation diaphragm through a negative chamber cross bore oil duct, a second pipeline and the pressure guiding medium in the negative channel. The transducer can measure static pressure of a system while measuring differential pressure of the system, and solves a problem of complex system and high cost caused by additional increase of pressure transducers.

Description

【Technical field】 [0001] The invention relates to a multi-parameter differential pressure sensor, in particular to a differential pressure sensor with a chip with relatively large one-way overvoltage protection. 【Background technique】 [0002] At present, the known differential pressure sensors have various structural forms, all of which have the function of protecting the silicon differential pressure chip. However, these known differential pressure sensors can only measure the differential pressure used to measure the system, and cannot measure the static pressure of the system at the same time. . If you want to measure the static pressure of the system, you need to add an additional pressure sensor, which brings about the problems of complex system and high cost. [Content of the invention] [0003] In order to solve the above problems, the present invention provides a multi-parameter differential pressure sensor, which can measure the static pressure of the system whil...

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Problems solved by technology

[0003] In order to solve the above problems, the present invention provides a multi-parameter differential pressure sensor, which can measure the static pressure of the system while measuring the differential pressure of the system, which solves the problem of complex system and high cost caused by the addition of pressure sensors in the prior art question

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