Hi!

I have a humidity sensor from Philips (H1
ftp://ftp.iac.es/out/dsg/H1_Humidity.pdf), it's a device that changes
its capacity value from 110pF to 140pF. I found its datasheet not on
Philips web, where I cannot find either an application note about it. On
its electrical characteristics is talks about a frequency range which
have no meaning for me.

How could be this device conected into a circuit?

How to measure such a low capacity value?, with an oscilator (555)?, if
the capacity is so low, could the parasitic capacities easily changes
the measured value?

Thanks in advance,
Diego.

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