*Temp Measurements in Humidity Sensor Standard
*Minimum and Maximum Air Speed and Temp
*Analog Voltage Output and Communication Options
*Measure Relative from 5.0 to 95% RH
*Measure Airflow in Environments from -20 to 100°C (-4 to 212°F)
Thông số kỹ thuật
*Battery Life: Approximately 150 hours Dimensions
*Instrument: 165 x 83 x 38 mm (6.5 x 3.25 x 1.5")
HHF144A: 25 mm (1") diameter
HHF144B: 70 mm (2.75") diameter
*RH/Temp Probe: 152 x 25 mm (6 x 1") diameter
*Operating Temp
Instrument: 0 to 50°C (32 to 125°F)
Air Probe: -20 to 100°C (-4 to 212°F)
Temp/Humidity Probe: -20 to 80°C (-4 to 176°F)
*Power Supply: 3 "AA" alkaline batteries (included)
*Ranges
HHF144A: 1.5 to 35.00 MPS (300 to 6800 FPM)
HHF144B: 0.2 to 40.00 MPS (40 to 7800 FPM)
*Relative Humidity: 5.0 to 95% RH
*Temperature (Using Standard Combination *Temp/Humidity Probe): -20 to 80°C (-4 to 176°F)
*Temperature (Using Optional Separate *Temperature Probe): -95 to 200°C (-139 to 392°F)
*Accuracy
Air Velocity: ±1.0% of reading ±1-digit
Temperature: ±(0.3°C + 0.2% of reading in °C)
Temperature Accuracy Examples: ±0.3°C @ 20°C (±0.5°F @ 68°F)
Relative Humidity: ±2.0% RH
*Resolution
Air Velocity: 1 FPM or 0.01 MPS
Temperature: 0.1°F or °C (1°F below -99.9°F)
Relative Humidity: 0.1% RH
*Response Time
Relative Humidity: Up to 90% of change in measured value in 15 seconds
Temperature: Approx. 60 sec in still air; *Approx. 10 sec in moving air streams
*Display: 12.7 mm (0.5") LCD, 4-digits, with LED backlight
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