HOBO Carbon Dioxide/Temp/RH Data Logger

Specifications

Temperature Sensor
Range: 0° to 50°C (32° to 122°F)
Accuracy: ±0.21°C from 0° to 50°C, see manual for plot (±0.38°F from 32° to 122°F, see manual for plot)
Resolution: 0.024°C at 25°C , see manual for plot (0.04°F at 77°F , see manual for plot)
Drift: <0.1°C per year (0.18°F per year)

RH Sensor*

Range: 1% to 90% RH (non-condensing)
Accuracy: ±2% from 20% to 80% typical to a maximum of ±4.5% including hysteresis at 25°C (77°F); below 20% and above 80% ±6% typical
Resolution: 0.01%
Drift: <1% per year, typical

CO2 Sensor

Range: 0 to 5,000 ppm
Accuracy: ±50 ppm ±5% of reading at 25°C (77°F), less than 90% RH (non-condensing) and 1,013 mbar
Warm-up Time: 15 seconds
Calibration: Auto or manual to 400 ppm
Non-linearity: <1% of FS
Pressure Dependence: 0.13% of reading per mm Hg (corrected via user input for elevation/altitude)
Operating Pressure Range: 950 to 1,050 mbar (use Altitude Compensation for outside of this range)
Compensated Pressure Range: -305 to 5,486 m (-1,000 to 18,000 ft)
Sensing Method: Non-dispersive infrared (NDIR) absorption

Response Time

Temperature: 12 minutes to 90% in airflow of 1 m/s (12 minutes to 90% in airflow of 2.2 mph)
RH: 1 minute to 90% in airflow of 1 m/s (1 minute to 90% in airflow of 2.2 mph)
CO2: 1 minute to 90% in airflow of 1 m/s (1 minute to 90% in airflow of 2.2 mph)

Logger

Radio Power: 1 mW (0 dBm)
Transmission Range: Approximately 30.5 m line-of-sight (Approximately 100 ft line-of-sight)
Wireless Data Standard: Bluetooth Low Energy (Bluetooth Smart)
Logger Operating Range: 0° to 50°C ; 0 to 95% RH (non-condensing) (32° to 122°F ; 0 to 95% RH (non-condensing))