Check the listing for details. REED Instruments R9910SD-NIST Data Logging Air Quality Meter BRAND NEW!. Color: Blue, Condition: New. Listed at 899.00 USD. REED R9910SD Data Logging Air Quality MeterModel: R9910SD | UPC: 800837004949Real-time data logger with integrated SD memory card measures/records oxygen, carbon dioxide, carbon monoxide, ambient temperature, dew point and wet bulb temperatures and humidity.REED R9910SD OffersThe R9910SD 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 sec 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.FeaturesMeasures oxygen (O2), carbon dioxide (CO2), carbon monoxide (CO), temperature and humidityRecords up to 3 readings simultaneouslyUser adjustable audible alarmsUser selectable unit of measure (°C or °F)Data hold and Max/Min functionsReal-time data logger with integrated SD memory cardUser selectable sampling rate from 2 secs to 8 hrsEasy-to-read backlit LCD displayTripod mount for long-term monitoringLow battery indicator and auto shut off REED R9910SD SpecificationsTemperatureMeasuring Ranges32 to 122.0°F (0 to 50.0°C) Dew Point: -13.5 to 120.1°F (-25.3 to 48.9°C) Wet Bulb: -6.9 to 122.0°F (-21.6 to 50°C)Accuracy±1.5°F (±0.8°C)Resolution0.1°F/°CHumidityMeasuring Ranges5 to 95%RHAccuracy>70%RH: ±(3% rdg + 1%RH) 3,000 ppm: ±250 ppmResolution1 ppmCOMeasuring Ranges0 to 1,000 ppmAccuracy±(5% + 2 ppm)Resolution1 ppmO2Measuring Ranges0 to 30% O2Accuracy±(1% + 0.2% O2)Resolution0.10%General SpecificationsAlarm Threshold