High sensitivity photoionization detector
A photoionization, high-sensitivity technology, used in instruments, measuring devices, scientific instruments, etc., can solve the problem of not taking into account the electromagnetic interference of the light source driving circuit, the collector or the emitter is not protected, and the detection limit of the detector is weakened. problems, to avoid the photoelectric effect, reduce the cell volume, and achieve the effect of low noise level
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[0012] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0014] Generally speaking, there are many factors that affect the sensitivity of the photoionization detector, mainly including the structure of the ionization chamber and the volume of the cell, the photoelectric effect generated by the direct irradiation of the PID light source on the electrode, and various electromagnetic noises (especially the driving circuit of the PID light source). interference. Therefore, the present invention will aim at improving the sensit...
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