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| A troubleshooting analysis of PWD20 visibility sensor |
| Wei Mingming1, Liu Chuntao1, Kong Haiyang2 |
1.Laoshan Meteorological Bureau of Qingdao,Qingdao 266102;
2.Shanghai Meteorological Instrument Limited Company,Shanghai 200120 |
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Abstract Aiming at the phenomenon of missing measurement when a numerical error of PWD20 visibility sensor exceeds the range,the troubleshooting is carried out by gradually decomposing from the three aspects of power supply,line and sensor.Finally,the fault points are found out and the solutions are put forward,which can be used as a reference for other operators to deal with similar faults.
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Received: 14 November 2019
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2020, Vol. 37 
