Green Air Portable Carbon Dioxide Monitor (CDM-7701) 

Green Air Portable CO2 Monitor, Model 7001, has an 18-month parts and labor warranty! It has a large, easy to read display and is designed for residential or commercial use. Temperature is displayed in either °F or °C and the CO2 is displayed in ppm. This hand-held CO2 monitor is easily adjusted for altitude changes, with a measurement range from 0-10,000 ppm (0 to 1%). 

The Green Air Portable CO2 Monitor has a patented dual beam Absorption Infrared gas sensor that ensures long term stability and durability. It has the ability to display CO2 readings in less than 30 seconds. Also equipped with an output for recording data via accessory cable and data logger. Recorded data can be graphed and printed using Windows based VG graphing software. Analog output for Recordaire® or other data logger. Digital output for optional UIP interface software.

The 7001 has a heat resistant, UL94-V5 rated enclosure and conformally coated electronics that resist moisture and airborne contaminants. The Portable CO2 Monitor operates on batteries or power supply (has plug-in AC power adapter) which gives it the flexibility to easily move from place to place. Operates for up to 70 hours on 4 AA alkaline batteries. (not included).

This portable CO2 monitor even has a flip out stand for desktop monitoring. It offers fast, simple calibration using external port and display. Calibrate with ambient air or bottled gas. Calibrate, set elevation, change °F or °C using on-board controls or optional computer interface.

CO2 Channel Measurement Range:
0-4,000 ppm voltage output
0-10,000 ppm display
Sensitivity: ± 1 ppm
Accuracy: ±50 ppm or ±5% of reading, whichever is greater
Repeatability: ±20 ppm
Temperature Dependence:
±0.1% of reading per °C or ±2 ppm per °C, whichever is greater, referenced to 25°C
Pressure Dependence:
0.13% of reading per mm Hg (Corrected via user input for elevation)
Annual Drift: ± 20 ppm typical
Response Time: <60 seconds for 0..90% of step change
Warm-Up Time: <60 seconds at 22°C
Operating Conditions:
32-122°F (0-50°C)
0-95% RH, non-condensing
Storage Temperatures: -40 to 140°F (-40 to 60°C)
Calibration Interval:
12 months, offset adjustment using single gas at 0-1000 ppm CO2. Full factory calibration available
Temperature Range:
Voltage output 32 to 104°F (0 to 40°C) Display 32 to 122°F (0 to 50°C)
Display Resolution: 0.1°F (0.1°C)
Display Options: °F, °C, or Off. Set with panel button.
Accuracy: ±2°F (±1°C)
Response Time: 20-30 minutes (CAS must equilibrate with environment)

More info from the Manufacturer (PDF format - Lots of detail.)