skip to content

Hydronic Manometers

    Accurate Hydronic System Balancing

    Facilities containing hydronic (water) systems are typically balanced for terminal flow using differential pressures. Balancing hydronic systems reduces energy consumption, saves money and enhances system performance.

    TSI Hydronic Manometers HM675 and HM685 are used to balance hydronic heating and cooling systems, check pump performance and to set balancing valves. Both models can measure and display differential, high side, and low side pressures simultaneously, without the need to change hose connections or instrument valve settings.

    Features and Benefits
    • Large backlit display for use in low light areas
    • Operates on four alkaline or NiMH rechargeable batteries
    • Reads in. H2O, ft. H2O, psi, in. Hg, mm H2O, kPa, mm Hg, or bar
    • Differential pressure range ±300 psi (±2068 kPa)
    • Gauge pressure range -20 to 300 psi (-138 to 2068 kPa)
    • Measure and display high side, low side, and differential pressure simultaneously
    • Robust, splash-proof case
    • HM685 includes data logging and flow calculation

    Contact TSI for more information about our Hydronic Manometers.

    Snubbers Available

    ACT NOW!

    Save Money

    Trade-in  your existing ventilation or IAQ instrumentation (WORKING OR NOT, NO MATTER WHAT THE BRAND) and get a CREDIT towards the purchase of a new instrument.


    Enroll Today!


    An educational tool for HVAC and IAQ assessment professionals.


    Need Help Finding a Product?

    1. 1 Where are you trying to make a measurement?
    2. 2 What is your application?
    3. 3 What are you trying to measure?
    If you are seeing this, then the pnlEUCookieScripts is working