Velocity Range
Pitot probes: 0.125 to 78 m/s (25 to 15,500 ft/min)
Air flow probe: 0.125 to 12.5 m/s (25 to 2,500 ft/min)
Velocity matrix: 0.125 to 12.5 m/s (25 to 2,500 ft/min)
Accuracy: ±3% of reading ±0.04 m/s (±7 ft/min) at velocities >0.25 m/s (50 ft/min)
Units: m/s, ft/min
Resolution: 0.01 m/s (1 ft/min)
Pressure
Differential pressure:  ±3735 Pa H2O (±15 in.); 37.5 kPa H2O (150 in.),maximum safe operating pressure
Absolute pressure: 356 to 1016 mm Hg (15 to 40 in. Hg)
Accuracy: ±2% of reading ±0.025 Pa H2O (±0.0001 in.) static and differential; ±2% of reading absolute
Units: in. H2O, in. Hg, Pa, hPa, kPa, mm Hg, cm Hg, mm H2O, cm H2O
Resolution: 0.001 Pa H2O (0.00001 in.) static and differential; 1 mm Hg (0.01 in. Hg) absolute
Volume
Range: 42 to 4250 m3/h (25 to 2,500 ft3/min) capture hood, supply and return
Accuracy: ±3% of reading ±12 m3/h (±7 ft3/min) at flows >85 m3/h (>50 ft3/min)
Units: m3/h, ft3/min, l/s, m3/min
Resolution: 1 m3/h (1 ft3/min)
RH
Range: 5 to 95% RH (temperature/RH probe)
Accuracy:±3% RH
Resolution: 0.1% RH
Temperature
Sensor in base: 4.4 to 60°C (40 to 140°F)
Temperature/RH probe: -10 to 60°C (14 to 140°F)
Accuracy: ±0.3°C (±0.5°F)
Units: °C, °F
Resolution: 0.1°C (0.1°F)
Instrument Temperature Range
Operating: 4.4 to 60°C (40 to 140°F)
Storage: -20 to 71°C (-4 to 160°F)