TD901-VOC-SH pumping VOC gas detector features VOC gas detector using PID photo ion sensor, PID consists of ultraviolet light source and ion chamber and other main parts, there are positive and negative electrodes in the ion chamber, forming an electric field, the gas to be tested Under the irradiation of the ultraviolet lamp, ionization generates positive and negative ions, forms a current between the electrodes, and amplifies the output signal. PID has the advantages of high sensitivity, no poisoning problem, safety and reliability, and can detect more than 400 kinds of volatile organic gases.
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