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Reed R9910SD Data Logging Air Quality Meter


The Reed R9910SD Data Logging Air Quality Meter is capable of recording readings from 3 probes simultaneously and features data hold, max/min functions, and an easy-to-read backlit LCD display. Using a SD card (max 16GB), a user can manually record up to 99 readings or automatically by selecting a desired sampling rate from 1 seconds to 8 hours. Quickly generate an Excel file with raw data, all without the use of software. Optional accessories include a tripod and AC adapter for continuous long-term monitoring.

  • Measures oxygen (O2), carbon dioxide (CO2), carbon monoxide (CO), temperature and humidity
  • Records up to 3 readings simultaneously
  • User adjustable audible alarms
  • User selectable unit of measure (°C or °F)
  • Data hold and max/min functions
  • Real-time data logger with integrated SD memory card
  • User selectable sampling rate from 2 seconds to 8 hours
  • Easy-to-read backlit LCD display
  • Tripod mount for long-term monitoring
  • Low battery indicator and auto shut off
  • Includes humidity, carbon monoxide, carbon dioxide and oxygen probes, hard carrying case and batteries
Part Number: R9910SD
Attribute nameAttribute value


Temperature Range :0 to 50.0°C (32 to 122.0°F); Dew Point: 25.3 to 48.9°C (-13.5 to 120.1°F); Wet Bulb: -21.6 to 50°C (-6.9 to 122.0°F)
Temperature Resolution :0.1°C/°F
Temperature Accuracy :±0.8°C (±1.5°F)
Humidity Range :5 to 95% RH
Humidity Resolution :0.1% RH
Humidity Accuracy :>70% RH: ±(3% Reading + 1% RH); <70% RH: ±3% RH
CO₂ Range :0 to 4,000 ppm
CO₂ Resolution :1 ppm
CO₂ Accuracy :<999 ppm: ±40 ppm >1,000 ppm; ≤3000 ppm: ±5% Reading; >3,000 ppm: ±250 ppm
CO Range :0 to 1,000 ppm
CO Resolution :1 ppm
CO Accuracy :±(5% + 2 ppm)
O₂ Range :0 to 30% O₂
O₂ Resolution :0.10% O₂
O₂ Accuracy :±(1% + 0.2% O₂ )
Dimensions LxWxH :177 x 68 x 45mm (7.0" x 2.7" x 1.8")
Weight :350 g (0.8 lb)