Technical parameters:

Pressure measurement range: -300 to 300 psi (-2068 to 2068 kPa)

Measurement range: -20 to 300 psi (-138 to 2068 kPa) (-40 to 610 in. Hg)

Resolution (optimal): 0.001 psi (0.01 kPa) (0.01 in. Hg)

Accuracy 1: ± 1% of reading. 072 psi (0.5 kPa) (0.15 in. Hg)

Measurement units: psi, in. H2O, ft H2O, kPa, mm Hg, in. Hg, m H2O, bar

Pressure pipe joint: ¼ "37 • flare fitting, Male

temperature

Operating temperature (electronic) 40 to 113 ° F (5 to 45 ° C)

Storage: -4 to 140 ° F (-20 to 60 ° C)

Liquid medium: 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)

Unit: ° F, ° C

Flow range 2: -22712 to 22271 m3/h, -99999 to 99999 USGPM (-6309 to 6309 l/s)

Resolution (optimal): 0.0001 USGPM (0.00001 l/s)

Accuracy: precision per pressure+valve deviation

Units: USGPM, UKGPM, m3/h, l/s, l/m

Measurement cycle: Users can choose (1, 5, 10, 20, and 30 seconds)

Data statistics: minimum, maximum, average, total of 4000 counts

Data storage: 4000 combined reads, 100 test IDs

Record interval: Users can choose (1 to 3600 seconds)

Size: 11.1 in. x 4.7 in. x 3.5 in. (28.2 cm x 11.9 cm x 8.8 cm)

Weight: 2.65 lbs (1.20 kg)

Power adapter: 4 AAs, or AC adapter

Balance valve flow tester

Model: HM685

The HM685 balance valve flow tester is used to balance liquid circulation heating and cooling systems, check pump performance, and set balance valves. It can measure and display pressure difference, high pressure side, and low pressure side pressure simultaneously without changing hose connections or instrument valve settings.

The components include:

·Instrument host

·Hard suitcase

·(2) 6.7 ft x ¼ - in. Hose with shut-off valve (2 m x 6 mm)

·(2) B&G readout probe

·(2) P/T table adapter probe

·Power cord

·Temperature probe

· CompuDat ™ USB download software

·USB data cable

Characteristics and advantages

Support dual temperature probe input

Backlit large screen, able to display clearly even in low light conditions

Powered by four rechargeable alkaline or nickel hydrogen batteries

Reading method H 2 O, ft, H 2 O, psi, in. Hg, mm Hg, m H 2 O, kPa or bar

Pressure difference range ± 300 psi (± 2068 kPa)

Gauge pressure range -20-300 psi (-138-2068 kPa)

Integrate universal traffic and BTU/HR calculation

When setting the Cv (Kv) factor, display the volumetric flow rate

Can input up to 100 Cv (Kv) factors

Calculate braking force, heat flux, Cv (Kv) factor, and pump wheel size

Capable of storing up to 4000 data points for retrieval or downloading via USB port

Durable splash proof instrument box

Weight including battery: 2.65 lbs (1.20 kg)

Note: TSI HM685 from the United StatesBalance valve flow tester, American TSI flow tester, American TSI HM685, TSI HM685, imported balance valve tester, American TSI agent, agent for the full range of American TSI products