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Clamp-on Temperature Gauge?

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Cyclist77
Cyclist77 Member Posts: 239
in THE MAIN WALL

Are these pretty decent? Any suggestions as to installing, should they be insulated?

I want to put one on my boiler return line.

Thanks !

Comments

  • HydronicMike
    HydronicMike Member Posts: 245

    Depends on the brand

  • Larry Weingarten
    Larry Weingarten Member Posts: 4,010

    Hi, I've had good results with them. I would insulate as best you can. Also, you might put a dab of conductive grease under it, where it "reads" pipe temperature, to help it out a bit.

    Yours, Larry

  • pecmsg
    pecmsg Member Posts: 6,781

    for a rough measurements they are fine

  • hot_rod
    hot_rod Member Posts: 26,604

    A zip tie, better yet a hose clamp is a simple way to connect any temperature sensor to a pipe. Insulation over it is critical for accurate readings. Tekmar sensors, on left, actually have a flat spot to clamp on pipes.

    Screenshot 2025-11-18 at 9.41.53 AM.png

    This Azel is a handy temperature gauge, battery operated or 24VAC

    It reads supply and return to give you good info. Find them from various online sources.

    Screenshot 2025-11-18 at 9.38.52 AM.png
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • Cyclist77
    Cyclist77 Member Posts: 239

    I will check at Supply House.

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