Hydronic Manometer

TSI - HM675

To balance hydronic heating and cooling systems, check pump performance and set balancing valves.

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Description
Specifications

Hydronic Manometer Model HM675 is used to balance hydronic heating and cooling systems, check pump performance and set balancing valves.

It 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

Provides for inputs for two temperature probes
Measure and display high side, low side, and differential pressure simultaneously from 0 to 300 psi
(0 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)

Kit Includes:

Instrument
Hard carrying case
(2) 6.7 ft x ¼-in. (2 m x 6 mm) hoses with shut-off valves
(2) B&G readout probes
(2) P/T gauge adapter probes
Power cord

Applications

Test and balance heating and cooling systems
Check pump performance
Set balancing valves

HM675 kit includes hard carrying case, (2) 6.7 ft x ¼-in. (2 m x 6 mm) hoses with shut-off valves, (2) B&G readout probes, (2) P/T gauge adapter probes, and power cord.
HM685 kit includes all items in HM675 kit, plus a temperature probe, CompuDat USB downloading software, and USB interface cable.

Specification

Pressure
Differential Range	0 to 300 psi (0 to 2,068 kPa)
Gauge Range	0 to 300 psi (0 to 2,068 kPa)
Resolution (best)	0.001 psi (0.01 kPa)
Accuracy¹	±1% of reading or .072 psi (0.5 kPa),whichever is greater
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	-40 to 250°F (-40 to 121 °C)
Resolution	0.1°F (0.1°C)
Accuracy	±0.5°F (0.3°C) from 32 to 160°F (0 to 71°C); max ± 2.0°F (1.2°C) from -40 to 32°F (-40 to 0°C) and from 160 to 250°F (71 to 121°C)
Units	°F, °C
Flow (HM685)
Range²	0 to 2,271 m3/h, 0 to 9,999 USGPM (0 to 6,31 l/s)
Resolution (best) Accuracy	0.0001 USGPM (0.00001 l/s) per pressure accuracy + valve deviation
Units Time	USGPM, UKGPM, m3/h, l/s, l/m Constant
Statistics	min, max, average, sum up to 4,000 readings (HM685 only)
Data Storage	4,000 combined readings, 100 Test IDs (HM685 only)
Logging Interval (HM685 only)	User selectable (1, 5, 10, 20, and 30 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
1. Accuracy statement applies from 0 to 250 psi (0 to 1724 kPa) 2. The flow reading is a calculated value determined from the measured Differential pressure, user entered valve flow coefficient (Kv or Cv),and fluid specific gravity Specifications subject to change without notice.

Product feature comparison	HM675
Differential, high side, and low side pressures displayed simultaneously	+
Range 0 to 300 psi (0 to 2,068 kPa)	+
Reads in in. H2O, ft H2O, psi, in. Hg, mH2O, kPa, mm Hg, bar	+
Performs flow calculations
Downloading software and USB cable
Temperature probe	optional
Hard carrying case	+
Certificate of Calibration	+