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Thread: Class III, Division II (article 547) CO detector

  1. #1
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    Class III, Division II (article 547) CO detector

    Anyone have a recommendation for a CO detector that is C3, div 2 rated..... that can Alarm at 30ppm?

    So far I’ve come across those that are 50 or 100ppm or higher

    (I realize it will probably be CII or CI rated anyway)

  2. #2
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    Oct 2007
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    Quote Originally Posted by nhfire77 View Post
    Anyone have a recommendation for a CO detector that is C3, div 2 rated..... that can Alarm at 30ppm?

    So far I’ve come across those that are 50 or 100ppm or higher

    (I realize it will probably be CII or CI rated anyway)
    Check this out. You'll need a specialty controller to go with it, but it will detect CO in the range of 0-500ppm at a resolution of 0.5ppm.

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