Gas phase molecular absorption spectrometer with redundant temperature control function

Abstract

The invention discloses a gas phase molecular absorption spectrometer with a redundant temperature control function, comprising a control device, a liquid path device, a gas path device and an opticalpath device; the control device is respectively in control connection with the liquid path device, the gas path device and the optical path device; the liquid path device comprises a sample introduction device, a sample mixing device and a reaction separation device, which are connected in series; the reaction separation device is connected to a heater; a temperature sensing mechanism is disposedbetween the heater and the reaction separation device; the temperature sensing mechanism comprises at least three temperature sensors, the temperature sensors are respectively connected to a voter, and the voter is connected to a display. According to the gas phase molecular absorption spectrometer with the redundant temperature control function in the invention, a temperature sensing mechanism is arranged between the reaction separation device and the heater, and the temperature sensing mechanism comprises at least three temperature sensors; and when the temperature values output by the twotemperature sensors are consistent, the voter outputs the value, thereby ensuring redundancy of temperature control of the spectrometer.

Description

technical field [0001] The invention relates to the technical field of environmental analysis instruments, in particular to a gas-phase molecular absorption spectrometer with a redundant temperature control function. Background technique [0002] Gas-phase molecular absorption spectroscopy is based on the principle that the relationship between the light absorption intensity of the gas decomposed into the measured component and the measured component obeys the law of light absorption for quantitative determination. According to the different absorption wavelengths, the components to be measured can also be determined for qualitative analysis. Gas-phase molecular absorption spectrometry can be used to determine ammonia nitrogen, total nitrogen, sulfide, nitrate nitrogen, nitrite nitrogen, Kjeldahl nitrogen, etc. [0003] The detection principle of gas-phase molecular absorption spectroscopy is: firstly, through a chemical reaction, the ions or molecules in the aqueous soluti...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a gas-phase molecular absorption spectrometer with a redundant temperature control function, which can solve the problems of lack of redundancy and low reliability in the temperature control of the gas-phase molecular absorption spectrometer in the prior art

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