Ranges
Air Probe AP275: 40 to 7800 FPM (feet per minute) 0.2 to 40.00 MPS (meters per second)
Air Probe AP100: 60 to 6800 FPM 0.3 to 35.00 MPS
Relative Humidity (%RH) 5.0 to 95.0 %RH
Temperature (using standard combination HTP202 probe): -4° to 176°F (-20° to 80°C)
Temperature (using optional RTD temperature probe): -148° to 1112°F (-100° to 600°C)
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 at 20°C; ±0.5°F at 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
0.5” LCD, 4 digits, with LED backlight
Operating Temp
Instrument: 32° to 125°F / 0° to 50°C
Air Probe: -4° to 212°F / -20° to 100°C
HTP202 Probe: -4° to 176°F / -20° to 80°C
Power Supply
3 AA alkaline batteries
Battery Life
Approximately 150 hours
Dimensions
Instrument: 6.5 inch X 3.25 inch X 1.5 inch
Probe AP275: 2.75 inch diameter
Probe AP100: 1 inch diameter
RH/Temp probe: 6 inch x 1 inch diameter
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