Automatic cleaning and zeroing system for light ion organic volatile gas detector
An organic volatile matter and gas detector technology, applied in chemical instruments and methods, cleaning methods and utensils, instruments, etc., can solve the problems of inconvenient disassembly and maintenance, affecting the accuracy of the detector, and decreasing the sensitivity of the sensor, so as to maintain accurate sexual effect
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[0010] Such as figure 1 As shown, an automatic cleaning and zero adjustment system for a photoion organic volatile gas detector includes a diaphragm air pump 3 installed on a mounting plate, an ion chamber 4, and an ion lamp 401 arranged in the ion chamber 4. It also includes an air The filter 1 and the solenoid valve 2 installed on the mounting plate and the microprocessor (not shown in the figure), the solenoid valve 2 is a three-way solenoid valve, including a sample gas sampling channel 202 to be tested, and filtered clean air Sampling channel 201 and gas output channel 203; the air filter is composed of a VOC sampling filter 101 and an on-site cleaning zeroing filter 102, the VOC sampling filter 101 and on-site cleaning zeroing filter 102 respectively correspond to a gas output channel After the ambient air is cleaned and adjusted on the zero filter 102, the sample gas to be tested passes through the sample gas sampling channel 202 of the three-way solenoid valve and then ...
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