Read the statement by Michael Teeuw here.
Capacitive Proximity Sensors
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 I have read online that capacitive sensors can detect both metal and non-metal. Can anyone please explain me their working in simple terms? I read on various places online but information I found was too technical or less. 
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 @davidward basically the sensor detects a change in the wave shape in front of it… the wave shape is not magnetic, but different… (I can’t explain that part) 
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 @sdetweil said in Capacitive Proximity Sensors: @davidward basically the sensor detects a change in the wave shape in front of it… the wave shape is not magnetic, but different… (I can’t explain that part) So they emit any kind of waves? 
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 @davidward no, its the disruptive wave of their presence as compared the space without them… logically same as the magnetic wave detection… wasn’t there before, now it is 
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 @davidward said in Capacitive Proximity Sensors: I have read online that capacitive sensors can detect both metal and non-metal. Can anyone please explain me their working in simple terms? I read on various places online but information I found was too technical or less. Capacitive sensors use conduction plates that work like an open capacitor. Where you were reading online? 
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 @timwinthrow said in Capacitive Proximity Sensors: Capacitive sensors use conduction plates that work like an open capacitor. but those words don’t MEAN anything to me… not an electrical engineer we were trying to find a laymans description 
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 @sdetweil said in Capacitive Proximity Sensors: @davidward no, its the disruptive wave of their presence as compared the space without them… logically same as the magnetic wave detection… wasn’t there before, now it is I got it. I was reading here https://www.derf.com/an-overview-on-proximity-sensors/ and question pop ups. Dust can be a bigger challenge to maintain sensors. How they can be protected? Does companies use any specific coating or something? 
