TSI Alnor HM675 and HM685 Hydronic Manometers for System Balancing

Facilities with hydronic (water) systems are typically balanced for terminal flow using differential pressures. Balancing hydronic systems reduces energy consumption and saves money.

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

Key Specifications

  • Direct upgrade for retired TSI Alnor HM670 and HM680 models
  • Measuring range: 0 PSI to 300 PSI (0 kPa to 2068 kPa)
  • Measures and displays high side, low side, and differential pressure simultaneously
  • Large backlit display for use in low light areas
  • Inputs for two temperature probes
  • Robust splash-proof case
  • HM685 calculates flow using valve manufacturers' Cv flow factors, and calculates heat flow, impeller diameter, and brake power
  • , logs up to 4000 data points

Supporting Documentation

Click the file icon to view the file online, or right-click on the file icon and select "Save Target As..." to download the file to disk for later viewing.