TSI HM685 Hydronic Manometer

Name: TSI HM685 Hydronic Manometer
Brand: TSI ALNOR
SKU: TSIHM685
Price: 3960.00 USD
Availability: InStock

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Hydronic Manometer

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, mm Hg, m H₂O, 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)

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Product	TSI ALNOR HM685 Hydronic Manometer	TSI ALNOR HM675 Hydronic Manometer
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TSI HM685 - Hydronic Manometer

Test and balance heating and cooling systems
Check pump performance
Set balancing valves
Cleanroom testing
HVAC commissioning and troubleshooting
Laboratory fume hood testing
IAQ investigations
Thermal comfort studies
Ventilation evaluations
Process airflow testing

The HM685 Hydronic Manometer is intended for HVAC professionals who need a reliable tool for balancing hydronic heating and cooling systems, checking pump performance, and setting balancing valves.

Software & Calculations

With this meter, users can measure and display differential, high side, and low side pressure simultaneously. Plus, the HM685 allows for simultaneous measurements without needing to change hose connections or instrument valve settings. The HM685 reads in: in. H2O, ft H2O, psi, in. Hg, mH2O, kPa, mm Hg, and bar.

High Accuracy

Use the HM685 to determine differential pressures from -300 to 300 psi and gauge pressures from -20 to 300 psi. For these measurements, the unit has high accuracy of ±1% of reading plus .072 psi. The HM685 also features inputs for up to two temperature probes. Using these inputs and the proper probes, users can measure temperatures up to 250°F with accuracy of ±0.5% of reading +1.2°F.

What's Inlcuded

The HM685 features a rugged, splash-proof outer casing, so you can be confident the instrument can perform in the environments you need it too. The unit is sold as a kit. Unique to the HM685 are the included temperature probe and CompuDat™ USB downloading software with cable. The kit also includes a hard shell carrying case, (2) 6.7 ft x ¼-in. hoses with shut-off valves, (2) B&G readout probes, (2) P/T gauge adapter probes, a calibration certificate, and a power cord. The instrument can also be powered via four alkaline or NiMH rechargeable batteries.

Product feature comparison	HM675	HM685
Differential, high side, and low side pressures displayed simultaneously	+	+
Reads in in. H₂O, ft H₂O, psi, in. Hg, m H₂O, kPa, mm Hg, bar	+	+
Performs flow calculations		+
Downloading software and USB cable		+
Temperature probe	optional	+
Hard carrying case	+	+
Certificate of Calibration	+	+
Unique Calculations menu for determining:	HM675	HM685
Brake Power		+
Heat flow		+
Calculate Cv/Kv		+
Pump law impeller diameter		+
Pump law delta P		+
Pump law brake power		+

General Specifications
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)
Accuracy	±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)
Range	0 to 2,271 m³ /h, 0 to 9,999 USGPM (0 to 6,31 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
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