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Thread: 1/4" flow meter ro/di rate seems wrong FMM

  1. #1
    Regular Vistor
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    1/4" flow meter ro/di rate seems wrong FMM

    I have two 1/4" flow meters on my ro/di system one on the product output and one on the waste output. I am getting 2.8gph on the flow meter for the product water, but my reservoir (from an empty state) filled 16 gallons in about 3 hours (8:28pm to 11:15pm) which would put it at about 5.3gph (5.3 would be more in line with the ro/di rated output of 100gpd). Is it simply a matter of the sensor not having enough water flow through it at speed fast enough to register correctly?

  2. #2
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    Yes, I would think so. The 1/4" meter can read between 3-12 GPH.

  3. #3
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    Any updates on this one. I am having some issues. The flow meter is not reading the rodi .. perhaps it is simply that it can really read accurately 50 gallons per day.. need a min of 75 gallons per day..
    And if so.. is there a way to chart.. that way can keep track of gallons produced by a new ro membrane?

  4. #4
    Frequent Contributor zombie's Avatar
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    Quote Originally Posted by Chicago View Post
    Any updates on this one. I am having some issues. The flow meter is not reading the rodi .. perhaps it is simply that it can really read accurately 50 gallons per day.. need a min of 75 gallons per day..
    And if so.. is there a way to chart.. that way can keep track of gallons produced by a new ro membrane?
    It can't keep track of gallons produced and the reading is only really reliable for 100+ gpd membranes.

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