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 |