Hydronic Manometer HM685

The easy setup and intuitive operation make this instrument very simple to use.

Kit Includes

• Instrument
• Hard carrying case
• (2) 6.7 ft x 1/4-in. (2 m x 6 mm) hoses with shut-off valves
• (2) B&G readout probes
• (2) P/T gauge adapter probes
• Power cord
• Temperature probe
• CompuDat™ USB downloading software
• USB interface cable

Features and benefits

• Provides for inputs for two temperature probes
• 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, mmHg, mH₂O, kPa or bar
• Differential pressure range ±300 psi (±2068 kPa)
• Gauge pressure range -20 to 300 psi (-138 to 2068 kPa)  
• Performs on-board universal flow and btu/hr calculations
• Displays volumetric flow when a Cv (Kv) factor is programmed
• Allows up to 100 Cv (Kv) factors to be entered
• Calculates brake power, heat flow, Cv (Kv) factors, and impeller sizing
• Stores up to 4,000 data points for recall or downloading via USB interface
• Robust, splash-proof case 
• Meter weight with batteries is 2.65 lbs (1.20 kg)