should a person be concerned about a peak level of 34 on a carbon monoxide detector?

carbon monoxide detectors levels image

juliablue

while conducting a routine test on my carbon monoxide detectors, one of them had a peak level of 34 and the other 11. Should I be concerned?

Answer
check with local fire and see if they can calibrate or check with a known good meter, if its right then yes normal safe levels are less than 10.

Is it normal for a carbon monoxide detector to read 0 ppm?

dfjkdfj

Sorry for posting a second time, but the first question did not get any good answers. Is it normal for a carbon monoxide detector to read 0 PPM? I have one that shows the highest level over the past 24 hours, and whenever I check it always reads 0 PPM. Is this normal? I would think there might be one or two PPM in the house, considering the lowest level it would bother sensitive people is 30 PPM.

Answer
Actually in the 0 to 29 ppm level CO detectors are not allowed to display the actual CO level, and are required to display zero in that range according to CO alarm standards developed by Underwriters Laboratories (UL2034) in collaboration with the US Consumer Product Safety Commission. (The display and alarm specifications of UL2034 are matched in a Canadian standard, CSA 6.19-01)

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