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Bảo hành	12 tháng

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Technical SpecificationsFeatureRangeDisplay ResolutionAccuracyMeasured SpecificationsTemperature-5°F to 140°F (-20°C to 60°C)0.1°F (0.1°C)± 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°CRelative

Technical Specifications
Feature	Range	Display Resolution	Accuracy
Measured Specifications
Temperature	-5°F to 140°F (-20°C to 60°C)	0.1°F (0.1°C)	± 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	10% to 90% RH non-condensing	1%	± 2% RH (10% RH to 90% RH)
Air velocity	0.25 fpm to 3000 fpm 0.25 m/sec to 15 m/sec	1 fpm (0.005m/sec)	4 % or 4 fpm* 3 % or 0.015 m/sec* whichever is greater *Accuracy specification only valid for velocity readings above 50 fpm.
CO2	0 to 5000 ppm	1 ppm	Warm up time 1 min (5 minutes for full specification) 2.75 % + 75 ppm
CO	0 to 500 ppm	1 ppm	± 5 % or ± 3 ppm, whichever is greater, @ 20 °C and 50 % RH
Calculated Specifications
Dew point temperature	-44 °C to 57 °C (-47 °F to 135 °F)	0.1 °C (0.1 °F)	± 1 °C when temp: -20 °C to 60 °C RH: 40 % to 90 % ± 2 °C when temp: -20 °C to 60 °C RH: 20 % to 40 % ± 4 °C when RH: 10 % to 20 %
Wet bulb temperature	-16 °C to 57 °C (3 °F to 135 °F)	0.1 °C (0.1 °F)	± 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)	0 to 3,965 M3/m (0 to 140,000 cfm)	0.001 M3/min (1 cfm)	N/A: The volume flow calculation will be a simple average of the data points times the duct area
% outside air (based on temperature)	0 to 100%	0.1%	N/A
% outside air (based on CO2)	0 to 100%	0.1%	N/A
General Specifications
Operating temperature CO and CO2 sensors	-20 °C to 50 °C (-4 °F to 122 °F)
Operating temperature All other functions	-20 °C to 60 °C (-4 °F to 140 °F)
Storage temperature	-20 °C to 60 °C (-4 °F to 140 °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