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Need suggestions for a part

R_Phoenix

Hello all.

 

I am looking for the best option to detect when water is in a pipe. In a nut shell I 'm looking for a way to know when water is available inside a 3/4" pipe.

 

I thought of a pressure switch but I can't seem to find anything that is simple and in expensive and also there won't always be pressure on the switch, for instance when the water is flowing threw the pipe.

 

Then I thought of a flow meter, but again the water won't always be flowing to detect motion.

 

Now I am thinking of reading the capacitance/resistance of the water. I have a few options but I was wondering what else might be out there that I haven't stumbled on yet.

 

Thanks everyone.

Parents

  • Wow, thanks for all the responses and good Ideas.

     

    My question for you is, what is the PSI rating for the water system?

     

    Have you thought of monitoring pipe temperature

    The PSI could go as high as 100+psi but would normally be around 60 to 80.

     

    Monitoring the pipe temp would be problematic if the water wasn't flowing at the time. Eventually the pipe would become "room temperature" if the water didn't flow but may be worth investigating further.

     

    Pure water is an insulator. A small amount of contamination, like salt, will make water conducting. Depending of the water used in your system the conductivity test will not work.
    For heavily contaminated water a conducting path could remain when the pipe is dry.

     

    This is true and something I hadn't considered - thanks. A lot of people will indeed be connecting things like filtration systems and De-ioniser so the conductive path may be problematic as well.

     

    Thanks for the other great Ideas everyone.

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  • Wow, thanks for all the responses and good Ideas.

     

    My question for you is, what is the PSI rating for the water system?

     

    Have you thought of monitoring pipe temperature

    The PSI could go as high as 100+psi but would normally be around 60 to 80.

     

    Monitoring the pipe temp would be problematic if the water wasn't flowing at the time. Eventually the pipe would become "room temperature" if the water didn't flow but may be worth investigating further.

     

    Pure water is an insulator. A small amount of contamination, like salt, will make water conducting. Depending of the water used in your system the conductivity test will not work.
    For heavily contaminated water a conducting path could remain when the pipe is dry.

     

    This is true and something I hadn't considered - thanks. A lot of people will indeed be connecting things like filtration systems and De-ioniser so the conductive path may be problematic as well.

     

    Thanks for the other great Ideas everyone.

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