Pro CO Analyzer with Low Pressure & High Temp Alarms


This Pro CO Alarm analyzer combines carbon monoxide detection, a low pressure alarm and an external high temperature sensor. Components are mounted in a water and impact-resistant case with a clear cover that is compatible with outdoor and marine environments. Available in two power options.


This version of the Pro CO Alarm analyzer detects:

(1) CO in air flow from an operating compressor in excess user-defined setpoints
(2) Compressor air outlet temperatures in excess of 350°F/177°C
(3) Low air supply pressure, factory set at 100 psi (7 bar)

If the analyzer readings fall outside of alarm setpoints, a relay sounds a piezo alarm and illuminates one of three panel LEDs (one each for CO, temperature and pressure). This same relay can activate an external relay to automatically shut down compressors, sound an external alarm or activate emergency backup systems.

The system includes an external temperature sensor with 12-feet of cabling, an externally mounted calibration gas inlet and exhaust port. Two power options available.

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.


  • Compressor mounted instrument
  • LCD display
  • On/Off switch
  • Rugged weatherproof housing
  • Low maintenance required
  • Low power consumption
  • Battery test function
  • Audible and visual alarms


Flow Rate 0.5-1 L/min
Resolution 1 ppm CO
Repeatability <+5%
Accuracy ±5%
Sensor Type Electrochemical (CO)
Expected Sensor Life >24 months in normal use from date of manufacture (CO)
Range 0-50 ppm CO
Alarms • Two user-programmable audible and visual CO alarms
• High temperature alarm at 350°F (177°C)
• Low pressure alarm at 100 psi (7 bar)
Response Time <50 seconds over complete temperature range (CO)
Operating Temperature 14° to 122°F (-10° to 50°C) continuous
-4° to 122°F (-20° to 50°C) intermittent 
Operating Humidity Non-condensing: 15-90% continuous; 0-99% intermittent
Storage Temperature 14° to 140°F (-10° to 60°C)
Power • Rechargeable Lithium Battery (SKU 9621-LB)
• Wall Plug-in [International] (SKU 9621-E)
(L x W x H)
2.5 x 1.75 x 4.25 in
(6.3 x 4.5 x 10.8 cm)
Weight 7.8 oz (0.22 kg)
Warranty 12 months
Replacement Sensor SKU 9501