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• Building or Office Indoor Air Quality
• Ideal for indoor air quality (IAQ) diagnosis of offices, classrooms, factories, hospitals and hotels
• Non-dispersive infrared (NDIR) technology
• Measures: CO₂ level, air temperature, dewpoint, wet bulb temperature and humidity
• Triple displays of CO₂ level, temperature and humidity
• Stable NDIR sensor for CO₂ detection
• Statistics of weighted averages:
  • TWA (8 hour weighted averages)
  • STEL (15 minute weighted average)
• Backlit LCD display
• Audible CO₂ warning alarm
• Battery or AC adaptor
• Manual calibration on CO₂ and humidity
• RS232 data interface
• Min, Max, STEL, TWA
• Range: 14º to 140ºF (-10º to 60ºC)
• CO₂ range: 0 to 5000ppm
• Resolution: 1ppm Accuracy: ±30ppm ±5% of reading
• Pressure Dependence +1.6% reading per kPa deviation from normal pressure, 100kPa
• Resolution: 0.1ºF (0.1ºC)
• Accuracy: ±0.9ºF (0.6ºC)
• Humidity range: 0 to 99.9%
• Resolution: 0.1%
• Accuracy: ±3% between 10 to 90% ±-5% other
• Warm up 30 seconds
• Operating: 32º to 122ºF (0º to 50ºC), 0 to 95% (avoid condensation)
• Storage: -4º to 140ºF (-20º to 60ºC), 0 to 99% (avoid condensation)
• Battery Life: 24 Hours (Alkaline)

Supplied with:

• 4 “AA” batteries
• Molded hard case
• Adaptor 9V 100-240VAC

• ASFT KIT PC Interface Kit (Optional)
• HR33 Calibration salt MgCl 33%
• HR75 Calibration salt NaCl 75%