• Continuous monitoring of carbon monoxide concentrations
• Long term stability - infrequent calibration
• Low maintenance
• Audible and visual alarms and relays signals
• Easy to read 4 digit LCD display
• ISO9002
• RS232 option
• For CO air quality monitors follow these links
  1) Hand held portable CO monitor
  2) Air quality wall mount  CO monitor

Introduction
The Guardian gas monitor uses a special non dispersive dual wavelength infra red sensor unit which has no moving parts. This ensures the long term stability of the instrument without the need for frequent recalibration. The gas is metered into the measuring system with a built in sample pump. Remote sampling can be performed by connecting a 5 mm diam sample tube to the gas inlet. This tube can be up to 90 feet long. The instrument is enclosed inside a tough plastic enclosure rated IP54 against the ingress of water and dust further increasing its long term reliability. The two independent alarm levels are set on the front panel and other options for analog output, alarm designation, buzzer and flow indication are set on on a dipswitch. The Guardian is designed to monitor the high levels of CO typical of combustions and industrial processes. For low level CO safety monitors click here

Air Quality Monitor, CO, here 

Applications of
CO monitoring