Ozone concentration measuring system and method for measuring ozone concentration by using same
A measurement system and technology for ozone concentration, which are applied in measurement devices, color/spectral characteristic measurement, material analysis by optical means, etc. zero effect
Pending Publication Date: 2022-01-11
苏州天一信德环保科技有限公司
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Problems solved by technology
[0005] For this reason, the technical problem to be solved by the present invention is to overcome the problem that the ultraviolet photometric ozone concentration analyzer in the prior art is affected by the zero error of the instrument and cause low measurement accuracy, and to provide an ozone concentration measurement system and use the system to measure the ozone concentration. The method overcomes the relatively zero error, improves the measurement accuracy of ozone concentration, and has good stability in measuring ozone concentration
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Embodiment 1
[0034] refer to figure 1 As shown, the present invention discloses an ozone concentration measurement system, comprising a measurement chamber 2, an ultraviolet light source 4, an ultraviolet light detector 6, an ozone scrubber 8, a zero point adjustment module 10 and an air intake control switch 12, and the ultraviolet light source 4 is directed to The ultraviolet light is incident in the measurement chamber 2, and the sample gas that needs to measure the ozone concentration is controlled by the air intake control switch 12 to enter the measurement chamber 2 or the ozone scrubber 8, and the air intake control switch 12 is preferably Configured as a solenoid valve; the ozone scrubber 8 is used to remove the ozone in the sample gas, and output an ozone-free background gas, which is connected to the measurement chamber 2 and controlled by the intake control switch 12 in a During the measurement period, the sample gas and the background gas are alternately introduced into the mea...
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The invention relates to an ozone concentration measuring system and a method for measuring ozone concentration by using the system, and the system comprises a measuring chamber, an ultraviolet light source, an ultraviolet light detector, an ozone washing device, a zero point adjusting module and a gas inlet control switch; a sample gas of which the ozone concentration needs to be measured is controlled by the gas inlet control switch to alternatively enter the measuring chamber or the ozone washing device; the ozone washing device is used for removing ozone in the sample gas and outputting background gas without ozone, and the background gas is connected into the measuring chamber; the measurement system performs sample gas measurement and background gas measurement in a measurement period; the zero point adjusting module is electrically connected with the ultraviolet light detector, and the zero point adjusting module is adjusted through an electric signal of the zero point adjusting module, so that the output concentration voltage of the measurement system during background gas measurement in each measurement period is a fixed value. According to the ozone concentration measuring system and the method for measuring the ozone concentration by using the system, zero error is overcome, the ozone concentration measuring precision is improved, and the measured ozone concentration has good stability.
Description
technical field [0001] The invention relates to the technical field of ozone concentration measurement, in particular to an ozone concentration measurement system and a method for measuring ozone concentration using the system. Background technique [0002] Ozone is a trace gas with extremely active chemical properties in the atmosphere. It has strong oxidizing properties and is one of the pollutants in urban ambient air. At present, most ozone concentration analyzers at home and abroad use electrochemical method or ultraviolet photometric method. The electrochemical ozone analyzer has short life and high maintenance cost, while the ultraviolet photometric ozone analyzer has the characteristics of non-toxic, non-corrosive, fast response, continuous online monitoring, etc., and has become the mainstream method of ozone monitoring. [0003] The ultraviolet photometry uses the strong absorption characteristics of ozone molecules in the ultraviolet spectrum. The sample gas and ...
Claims
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IPC IPC(8): G01N21/33G01N21/01
CPCG01N21/33G01N21/01G01N2021/0112
Inventor 倪文进倪俊王淑建
Owner 苏州天一信德环保科技有限公司