Electric water level indicator.

Discussion in 'Boilers' started by Jim Holmgren, May 7, 2019.

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  1. May 7, 2019 #1

    Jim Holmgren

    Jim Holmgren

    Jim Holmgren

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    I know there are driffent threads on the subject, though most of them seems quite complex especially for one who does not know a lot about electronics.

    I want something that will switch on a solonid that will lift the check valve of its seat in the feed water pump, when the water level are at the right level.

    Does anyone know how to make sensor like this?
    Maybe I can have two electrodes close together and energize one of them, so when the water touch it will pass the current to the other electrode?

    /Jim H.
     
  2. May 7, 2019 #2

    Brian Rupnow

    Brian Rupnow

    Brian Rupnow

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    Buy a cheap, float activated sump pump.
     
  3. May 8, 2019 #3

    rodw

    rodw

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  4. May 8, 2019 #4

    vederstein

    vederstein

    vederstein

    Must do dumb things....

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    My boiler uses a spark plug as a water level sensor. The non-pure water closes the circuit and a transistor converts the tiny signal to a higher signal to run a relay. My first implementation of this circuit resulted in a short cycle condition, so I added an off-delay timer.

    ...Ved.

     
  5. May 8, 2019 #5

    aka9950202

    aka9950202

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    That is brilliant! Spark plugs are easy to get and built for much higher pressures and temperatures. I tip my hat to you sir.

    Andrew in Melbourne
     
  6. May 8, 2019 #6

    Jim Holmgren

    Jim Holmgren

    Jim Holmgren

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    Thanks for the advice!

    Spark plugs seems like a great idea!
     

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