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| General Electronics Chat This forum is for general chat about electronics, eg: Dont know what a part does? Dont know how to read a circuit? Want to get an opinion? |
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Thread Tools | Display Modes |
16th June 2004, 01:59 AM
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RH sensor
Hi.....
I'm looking to the low cost RH sensor....I've one...but ...i've no idea to design the signal conditioning for this sensor...capacitive RH sensor...needs ac inputs?.... could somebody explain to me?...is there humidity sensor like temperature sensor...LM35DZ... thanks |
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16th June 2004, 02:21 AM
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I expect that the capacitance increases with humidity, and the capacitive loss will also increase. You can use R-C time constant to measure capacitance with DC, but you need to know the temperature to calculate the relative humidity.
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