Sulfur hexafluoride concentration detection circuit and sulfur hexafluoride oxygen concentration transmitter

Abstract

The invention relates to the field of gas concentration detection, and solves the problem that in the prior art, leakage of sulfur hexafluoride gas harms personnel safety and equipment operation. A sulfur hexafluoride concentration detection circuit comprises a sulfur hexafluoride sensor, a test light acquisition circuit and a single-chip microcomputer U14, the test light acquisition circuit comprises a first in-phase amplification circuit, a first band-pass filter circuit and a second in-phase amplification circuit which are connected in sequence, and the second in-phase amplification circuit is connected with the single-chip microcomputer U14. And the first in-phase amplification circuit is connected with the sulfur hexafluoride sensor. According to the invention, the concentration of the sulfur hexafluoride gas in the environment can be reliably measured, the leakage of the sulfur hexafluoride gas is prevented and treated in time, and the safety of personnel and equipment in the use environment is improved. The sulfur hexafluoride oxygen concentration transmitter comprises a shell, and the sulfur hexafluoride concentration detection circuit and an oxygen concentration measurement circuit are arranged in the shell.

Description

technical field [0001] The invention relates to the field of gas concentration detection, in particular to a sulfur hexafluoride concentration detection circuit and a sulfur hexafluoride oxygen concentration transmitter. Background technique [0002] Pure sulfur hexafluoride gas is colorless, odorless, non-toxic, non-flammable, and its specific gravity is 5 times that of air. Due to its unique physical and chemical properties, it has certain applications in various fields. Especially with the continuous development of circuit systems, sulfur hexafluoride electrical equipment is more and more widely used, especially GIS combined electrical appliances, because it greatly reduces the footprint and space volume of electrical equipment, it is easy to install, safe and reliable in operation, It is widely used due to the advantages of convenient maintenance. [0003] As sulfur hexafluoride gas is used more and more widely, the risk of its leakage increases accordingly. When the ...

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Problems solved by technology

[0004] The invention provides a sulfur hexafluoride concentration detection circuit and a sulfur hexafluoride oxygen concentration transmitter, which solves the problems in the prior art that the leakage of sulfur hexafluoride gas endangers the safety of personnel and the operation of equipment

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