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Single-light source low concentration ozone concentration detector

A technology of ozone concentration and low concentration, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of inability to perform zero point, affecting measurement accuracy, inaccurate zero point, etc. Effect

Pending Publication Date: 2017-06-20
新大陆科技集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the aging of the ultraviolet lamp, it is easy to cause inaccurate zero point and cause detection deviation, and the zero point calibration cannot be performed during the online detection process, which affects the measurement accuracy

Method used

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  • Single-light source low concentration ozone concentration detector
  • Single-light source low concentration ozone concentration detector
  • Single-light source low concentration ozone concentration detector

Examples

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Embodiment 1

[0036] Such as Figure 1-3 As shown in , a low-concentration ozone concentration detector with a single light source includes a first gas splitter 5, a zero gas processing device 8, a second gas splitter 6, a gas path switching device 7, a detection cell 1, Signal amplifier 9, AD converter 10, flow sensor 16, temperature sensor 14, pressure sensor 15, control processing module 11, display device 12 and air pump 13; Described detection pool 1 comprises ultraviolet lamp tube 201 and ultraviolet lamp chamber 2, gas Chamber 3 and ultraviolet light intensity probe 4, the gas chamber 3 is a long channel with both ends closed, the ultraviolet lamp tube 201 is arranged in the ultraviolet lamp chamber 2, and the light-transmitting hole 202 is set on the ultraviolet lamp chamber 2 to align with the air The first end of the chamber 3 is vertical, the second end of the air chamber is aligned with the ultraviolet light intensity probe and vertical, and the two ends of the air chamber 3 are...

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Abstract

A single-light source low concentration ozone concentration detector comprises two gas dividers, a zero gas processing device, a gas circuit switching device, a detection cell, a signal amplifier, an AD converter, a flow sensor, a temperature sensor, a pressure sensor, a control processing module, a display device and a gas pump; the detection cell comprises an ultraviolet lamp tube, a lamp chamber, a gas chamber and an ultraviolet light intensity probe, the ultraviolet lamp chamber is provided with a light hole, two end portions of the gas chamber respectively align at and are perpendicular to the light hole and the ultraviolet light intensity probe, the gas chamber is provided with a gas inlet and a gas outlet, the input end of the first gas divider is connected with the gas source, the output end of the first gas divider is respectively connected with the input ends of the zero gas processing device and the second gas divider, and the output end of the zero gas processing device is connected with the input end of the gas circuit switching device; and the output end of the second gas divider is connected with the pressure sensor and the gas circuit switching device, the output end of the gas circuit switching device is connected with the gas inlet of the gas chamber, the input port of the flow sensor is connected with the gas outlet of the gas chamber, and the output port of the flow sensor is connected with the gas pump.

Description

technical field [0001] The invention relates to an ozone concentration meter, in particular to an ozone concentration detector with a single light source, and belongs to the technical field of ozone concentration measurement. Background technique [0002] At present, most of the ozone concentration testers at home and abroad use the electrochemical method or the ultraviolet absorption method. The ozone concentration tester of the electrochemical method has a short life and high cost of use, so most of them use the ultraviolet absorption method. An existing ozone concentration instrument adopts the structure of double optical paths and double absorption cavities. This structure requires a spectrometer to divide the ultraviolet light into two paths and then respectively enter two absorption cavities with equal air gap lengths. One of the absorption cavities passes into Reference gas, the other absorption cavity is passed into the measured gas, the ultraviolet light emitted by ...

Claims

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Application Information

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IPC IPC(8): G01N21/17
CPCG01N21/17
Inventor 陈健刘强俤朱良焱
Owner 新大陆科技集团有限公司
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