Jin Wang, Xianwei Hao, Jungang Dong, Jijun Xiong, Yingping Hong. Design of high precision photoionization detector[J]. Infrared and Laser Engineering, 2020, 49(8): 20190576
- Infrared and Laser Engineering
- Vol. 49, Issue 8, 20190576 (2020)
Fig. 1. Schematic view of PID sensing principle
Fig. 2. System hardware ciucuit diagram. (a) Weak current detection module and UV lamp drive module circuit diagram, (b) system block view of the whole circuit
Fig. 3. External package view of PID. (a) External package structure view of the PID, (b) external package physical view of the PID
Fig. 4. Measurement system of PID. (a) Architecture view of the PID measurement system, (b) physical view of the PID measurement system)
Fig. 5. Curve diagram and fitting diagram of the experimental output voltage. (a) Curve diagram of the values measured for seven times, (b) curve diagram of the average output point and the curve diagram by linear fit
Fig. 6. Experimental results of repeatability. (a) Measurement curve of repeatability, (b) concentration curve of reverse-acting gas
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Table 1.
Voltage of seven groups of repeated tests at different concentrations of isobutene
不同异丁烯气体浓度时，七组重复试验的电压值
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Table 2.
Reversing experiment results of standard isobutene measurement
标准异丁烯测量反演实验结果
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