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Thread: Salt calibration

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    Salt calibration

    I have an Autopilot Digital Nano. It is saying the salt concentration is 2700 ppm (with no correction applied). I know I need to add salt, the question is how much. The salt strips I purchased from the same place I get my test chemicals (and advertised on this site), Aquarite I think is the brand, says 2250 ppm. So, which do I believe? How accurate are the salt sensors in the SWGs?
    Pool: Inground gunite/plaster, 34'x12', 3.5' - 5.5' - 3.5', ~14,000 Gal, 420 SQFT, 87.5' Perimeter, Salt Water, Waterfall, Oklahoma flagstone. Equipment: Hayward V/S, 425 SQFT Cartridge filter, Pool Pilot Digital Nano http://www.troublefreepool.com/new-p...tx-t38458.html

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    JasonLion's Avatar
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    May 2007
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    Re: Salt calibration

    In most cases the salt sensor in the SWG is more accurate than the test strips, especially if the SWG is fairly new. If the SWG is more than a few years old, it isn't as obvious which to trust, though the SWG is still more likely to be right, just by a slimmer margin.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    elwood58's Avatar
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    Re: Salt calibration

    The objective overall is to keep the SWCG happy enough to generate chlorine. I would trust the reading from the cell over the strips.
    19204 Gallon L Shape with a 10X10 2nd Step Baja Ledge. Intellichlor IC-40, IntellipH, Cartridge Filter, Pentair Heater/Chiller (Heat Pump). Tons of Deck with Deck Jets. Construction Complete 6/5/17.

    "If you don't measure it, you can't manage it!"

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    Re: Salt calibration

    Thanks for the replies, I'll go with the SWG.
    Pool: Inground gunite/plaster, 34'x12', 3.5' - 5.5' - 3.5', ~14,000 Gal, 420 SQFT, 87.5' Perimeter, Salt Water, Waterfall, Oklahoma flagstone. Equipment: Hayward V/S, 425 SQFT Cartridge filter, Pool Pilot Digital Nano http://www.troublefreepool.com/new-p...tx-t38458.html

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    Join Date
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    Ft Lauderdale, Florida
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    Re: Salt calibration

    Adeller, the Nano should also show you how many pounds you need to maintain 3000 ppm, as long as the pool volume was programmed into the unit.
    Sean Assam - Sean@teamhorner.com
    National Accounts and Commercial Products Manager
    AquaCal Heat Pumps www.aquacal.com
    AutoPilot Salt Chlorine Generators www.autopilot.com

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    Re: Salt calibration

    Poolsean,

    It does. It has taken me a little testing to figure out what volume to put in there (the volume the PB gave me was apparently way off), but the lbs to add does show. I am happy with the Nano so far, I was just curious how tight the calibration on the salt reading was compared to the salt test strips. Thanks.
    Pool: Inground gunite/plaster, 34'x12', 3.5' - 5.5' - 3.5', ~14,000 Gal, 420 SQFT, 87.5' Perimeter, Salt Water, Waterfall, Oklahoma flagstone. Equipment: Hayward V/S, 425 SQFT Cartridge filter, Pool Pilot Digital Nano http://www.troublefreepool.com/new-p...tx-t38458.html

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