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- Newsgroups: sci.electronics
- Path: sparky!uunet!think.com!ames!nsisrv!kong!mstephens.gsfc.nasa.gov!stephens
- From: mark stephens <stephens@kong.gsfc.nasa.gov>
- Subject: Re: How to measure humidity
- Message-ID: <1992Dec14.145507.10322@kong.gsfc.nasa.gov>
- X-Xxmessage-Id: <A7520AD23E01EC3D@mstephens.gsfc.nasa.gov>
- X-Xxdate: Mon, 14 Dec 92 09:56:34 GMT
- Sender: news@kong.gsfc.nasa.gov
- Nntp-Posting-Host: mstephens.gsfc.nasa.gov
- Organization: NASA/GSFC
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- References: <1992Dec10.150003.16312@kong.gsfc.nasa.gov> <1992Dec11.122331.2992@phx.mcd.mot.com> <Bz23tJ.BpK@babbage.ece.uc.edu>
- Date: Mon, 14 Dec 92 14:55:07 GMT
- Lines: 26
-
- One responce I rcved was interesting due to it's simplicity:
-
-
- Well Mark I see you are still building your terrarium and asking
- questions like you predicted. I have not got around to the Possion Arrow
- Frogs
- yet since I am building new tanks for geckos and pink tongue skinks.
-
- Anyway to your question which was posted to sci.electronics. A very
- simple
- way to keep the humidty high, although not truely measuring the humidty
- is to place a small sensor comprising of two electrodes in the tank. The
- application I saw this in was a orchid house. Anyway when the
- temperature in
- the house causes evaporation of the water off the surface of the sensor
- the
- misters come on, wet the surface, stop and then wait for the surface to
- dry
- again. This providing a simple solution. All it requires is a simple
- switching
- circuit.
-
- This is the solution I am opting for.
-
- Cheers
- John Haigh
-