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Thread: Jandy vs Pentair temperature sensor

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    Join Date
    Sep 2013
    Simi Valley, CA

    Jandy vs Pentair temperature sensor


    I'm almost done putting together my automation components. The only thing missing is the temperature sensor. I'm going to be using an aqualink rs8 to control my pool & spa. So, my questions are as follows:

    I've heard that you can use Pentair sensor instead of a jandy one with the RS controller, can anyone confirm if that's true? Pentair appears to be about half the cost of Jandy...

    Why does aqualink require 2 sensors? I understand that one is water & the other is air, but why do we care about air temp?

    28K IGP, AquaPure 1400 SWG, Inteliflow filtration, Inteliflow spa, pentair 1.5HP water feature pumps, pentair cartridge filter, 2.5 / 3" plumbing.

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    In the Industry
    Pool Clown's Avatar
    Join Date
    Sep 2008
    Silicon Valley, CA

    Re: Jandy vs Pentair temperature sensor

    Air temp allows for the use of freeze protection.
    Factory Warranty Station for:
    Jandy/Zodiac, Pentair, Sta-Rite, Raypak, Polaris,
    and Paramount pool cleaning systems.

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Jandy vs Pentair temperature sensor

    It looks like they're both 10k ntc thermistors so they should interchange without a problem.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Isaac-1's Avatar
    Join Date
    May 2010
    SW Louisiana

    Re: Jandy vs Pentair temperature sensor

    What Dave said may be true, depending on use I have noted that some pool equipment uses 10K NTC 4% per degree C thermistor, and others use 10K NTC 4.4% per degree C thermistors. Since both of these types is referenced to 10K ohms at 77 degrees F they will read very close at typical swim temperature range (often within their stated manufacturing tolerances), however when being used for the freeze detection role, they will be about 4 or 5 degrees F off when measuring temperatures in the mid 30's.

    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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