TSI HM675 Hydronic Manometer

• Provides for inputs for two temperature probes
• Differential pressure range ±300 psi (±2068 kPa)
• Gauge pressure range -20 to 300 psi (-138 to 2068 kPa)
• Reads in. H₂O, ft. H₂O, psi, in. Hg, mm H₂O, kPa, mm Hg, or bar
• Large backlit display for use in low light areas
• Operates on four alkaline or NiMH rechargeable batteries
• Robust, splash-proof case
• Meter weight with batteries is 2.65 lbs (1.20 kg)

Pressure
Differential Range -300 to 300 psi (-2,068 to 2,068 kPa)
Gauge Range -20 to 300 psi (-138 to 2,068 kPa) (-40 to 610 in. Hg)
Resolution (best) 0.001 psi (0.01 kPa) (0.01 in. Hg)
Accuracy ±1% of reading plus .072 psi (0.5 kPa) (0.15 in. Hg)Units psi, in. H₂O, ft H₂O, kPa, mm Hg, in. Hg, m H₂O, bar
Pressure Connection ¼” 37° flare fitting, Male
Temperature
Operating (electronics) 40 to 113°F (5 to 45°C)
Storage -4 to 140°F (-20 to 60°C)
Liquid Media 32 to 180°F (0 to 82°C)
Probe (immersion) -40 to 250°F (-40 to 121 °C)
Resolution 0.1°F (0.1°C)
Accuracy ±0.5% of reading +1.2°F (0.7 °C)
Units °F, °C
Flow (HM685 Only)
Range -22,712 to 22,271 m/h, -99,999 to 99,999 USGPM (-6,309 to 6,309 l/s)
Resolution (best) 0.0001 USGPM (0.00001 l/s)
Accuracy per pressure accuracy + valve deviation
Units USGPM, UKGPM, m3/h, l/s, l/m
Time Constant
User selectable (1, 5, 10, 20, and 30 seconds)
Statistics (HM685 only)
min, max, average, sum up to 4,000 readings
Data Storage (HM685 only)
4,000 combined readings, 100 Test IDs
Logging Interval (HM685 only)
User selectable (1 to 3,600 seconds)
External Meter Dimensions
11.1 in. × 4.7 in. × 3.5 in. (28.2 cm × 11.9 cm × 8.8 cm)
Meter Weight with Batteries
2.65 lbs (1.20 kg)
Power Requirements
Four AA-size cells, or AC adapter