Measured Specifications |
Temperature |
Range |
-20°C to 50°C (-5°F to 122°F) |
Display resolution |
0.1°C (0.1°F) |
Accuracy |
±0.9°C / ±1.62°F from 40°C to 60°C ±0.5°C / ±1.00°F from 5°C to 40°C ±1.1°C / ±1.98°F from -20°C to 5°C |
Relative humidity |
Range |
10% to 90% RH, non-condensing |
Display resolution |
1% |
Accuracy |
±2% RH (10% RH to 90% RH) |
Air velocity |
Range |
50.0 fpm to 3000 fpm 0.25 m/sec to 15 m/sec |
Display resolution |
1 fpm (0.005 m/sec) |
Accuracy |
±4% or 4 fpm1 ±4% or 0.02 m/sec1 whichever is greater |
1. Accuracy specification only valid for velocity readings above 50 fpm. |
C0 |
Range |
0 to 500 ppm |
Display resolution |
1 ppm |
Accuracy |
±5% or ±3 ppm, whichever is greater, @ 20°C and 50% RH |
C02 |
Range |
0 to 5000 ppm |
Display resolution |
1 ppm |
Accuracy |
Warm up time 1 min (5 minutes for full specification) 2.75% + 75 ppm |
Calculated Specifications |
Dew point temperature |
Range |
-44°C to 50°C, (-47°F to 122°F) |
Display resolution |
0.1°C (0.1°F) |
Accuracy |
±1°C when temp: -20°C to 50°C RH: 40% to 90% ±2°C when temp: -20°C to 50°C RH: 20% to 40% ±4°C when RH: 10% to 20% |
Wet bulb temperature |
Range |
-16°C to 50°C, (3°F to 122°F) |
Display resolution |
0.1°C, (0.1°F) |
Accuracy |
±1.2°C when RH: 20% to 90% temp: -20°C to 60°C ±2.1°C when RH: 10% to 20% |
Volume flow rate (in a duct) |
Range |
0 to 3,965 M3/m, (0 to 140,000 cfm) |
Display resolution |
0.001 M3/min, (1 cfm) |
Accuracy |
N/A: The volume flow calculation will be a simple average of the data points times the duct area |
% outside air (based on temperature) |
Range |
0 to 100% |
Display resolution |
0.1 |
% outside air (based on CO2) |
Range |
0 to 100% |
Display resolution |
0.1% N/A |
General Specifications |
Operating and storage temperature |
-20°C to 50°C (-4°F to 122°F) |
Humidity |
10% to 90% (non-condensing) |
Altitude |
Up to 2000 m (6562 ft) |
Shock and vibration |
MIL-PRF-28800F: Class 2 |
Multi-language interface |
English, French, Spanish, Portuguese and German |
Battery |
Rechargeable Li-Ion (primary), three-AA (backup) |
Data logging |
25,000 records (continuous), 99 records (discrete) |
Warranty |
Two-years |