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- Path: sparky!uunet!spool.mu.edu!wupost!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!ames!lll-winken!fnnews.fnal.gov!FNALF.FNAL.GOV!BEHNKE
- From: behnke@FNALF.FNAL.GOV
- Newsgroups: sci.electronics
- Subject: Re: help needed building water level sensor
- Message-ID: <1hq0ilINNbji@fnnews.fnal.gov>
- Date: 29 Dec 92 17:06:29 GMT
- References: <00965764.D96DDB80@Msu.oscs.montana.edu>
- Reply-To: behnke@FNALF.FNAL.GOV
- Organization: Fermi National Accelerator Lab
- Lines: 23
- NNTP-Posting-Host: fnalf.fnal.gov
-
- In article <00965764.D96DDB80@Msu.oscs.montana.edu>, uchrgrh@Msu.oscs.montana.edu writes:
- >I would like to build a solid state device that would turn off a water
- >pump in my aquarium if the water level drops below a certain level.
- >I am willing to look at prefabricated stuff but would prefer to build it
- >my self.
-
- Seems that a simple micro-switch attached to a float would work fine. The float
- would be attached to the lever of the micro switch. The pump motor is in series
- with the micro switch. When the float level gets below a level YOU consider
- safe, the switch opens and stops the pump. For a analogous system, take the
- cover off of the tank of your toilet and watch how the action works when you
- flush it. If needed, one could get fancy and have an extra tank of fresh H2O.
- When the water level in the main tank drops below a specified level, a second
- pump is started to pump fresh water into the tank to keep the filter pump
- operating.
-
- Just an idea.
-
- Mike "This 24GB database will be the death of me" Behnke
-
- My opinions are my own, and MOST of them don't mean a thing !
-
- mb
-