Pro CO with High Temp Alarm


This Pro CO Alarm analyzer combines carbon monoxide detection, an external high temperature sensor, and a low pressure flow meter/regulator. 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

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 shutdown compressors, sound an external alarm or activate emergency backup systems.

The system includes an external temperature sensor with 12-feet of cabling. Two power options available.

WARNING: Never expose gas sensors to pressure or you may cause damage and/or false readings. Damaged sensors will not provide accurate gas analysis. 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. A faulty Flow Restrictor can lead to a false analyzer reading. Flow Restrictors should be regularly tested with a Flow Meter. Inaccurate gas analysis can lead to serious personal injury or death.


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)
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
(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


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