Pro CO2 Alarm Analyzer - Handheld

The handheld Nuvair Pro CO2 Alarm Analyzer measures carbon dioxide levels in breathing gas mixtures and air. Two custom audible and visual alarms for low and high set points. The wall plug-in comes standard but a rechargeable lithium battery is also available. (SKU 9616-LB).


The Nuvair Pro CO2 Alarm Analyzer can be connected inline on your high or low pressure compressor for continuous carbon dioxide monitoring or used periodically on specific gas sources or in contained spaced. The CO2 sensor is auto-calibrating and provides a temperature-compensated, linear CO2 measurement over sensing range.

Audible and visual alarms for low and high carbon dioxide content can be set by the user. If the alarm sounds, the analog output can activate an optional relay that shuts down equipment automatically, sounds a remote alarm, or activates emergency backup systems.

PLEASE NOTE: Never expose gas sensors to pressure or you may cause damage and/or false readings. Damaged sensors will not provide accurate gas analysis. Inaccurate gas analysis can lead to serious personal injury or death. Most gas analyzers can be used to analyze a regulated gas sample flow, the contents of a gas cylinder, or the flow from a regulator. The flow rate of gas must equal 1-5 L/min. To produce this flow, a Flow Restrictor and Regulator may be required.


  • On/off switch
  • Low battery warning indicator
  • 50 ppm CO2 resolution on digital display
  • Optional relays for external alarm or compressor control
  • Fast response
  • Specifically designed to test breathing gases
  • Easy to operate, reliable and accurate
  • Modulated infrared light source = No moving parts


Flow Rate 0.6-1 L/min
Resolution 50 ppm resolution from 0 to 1000 ppm, then 100 ppm up to full scale
Repeatability ± 2% of full scale @ 68°F (20°C) ambient
Linearity At ambient temperature and pressure: ± 2% FSD or ± 10% of the reading, whichever is greater
Sensor Type NDIR (Non-dispersive infrared)
Expected Sensor Life 5-10 years based on analyzer handling and use. Check sensor accuracy frequently with test gas and attempt to recalibrate if reading is inaccurate. Replace sensor if recalibration fails.
Range 0-2000 ppm
Alarms Two user-programmable audible and visual alarms
Response Time < 30 seconds @ 68°F (20°C) ambient
Operating & Storage Temperature -4° to +122°F (-20° to +50°C)
Operating Humidity 0 to 95% rh, non-condensing
Power 110/230 V plug-in, rechargeable lithium battery or DIN rail (9617 only)
Battery Life

Estimated 20 hours on a single lithium battery recharge


2.5 x 1.75 x 4.25 in (6.4 x 4.5 x 10.8 cm)

Weight 7.8 oz (221 g)
Warranty 12 months

* All specifications are at ambient/sea level, 77°F (25°C) and are subject to change without notice. Calibration must be confirmed with a calibration CO2 test gas.