Use and Care Manual

The following table illustrates the approximate CO concentration
vs. the Low Level, Mid Level or Alarm times
5. Operating and Alarm Characteristics (cont.)
Approximate Low Level, Mid Level or Alarm Times
< 10 ppm Display “0” No Alert n/a n/a
10 No Alert n/a n/a
20 20-115 >115 n/a
30 0-55 >55 n/a
40 0-40 40-475 >475
50 0-30 30-175 >135
60 0-25 25-115 >100
70 0-20 20-60 60-240
80 0-15 15-65 >65
90 0-12 12-45 >45
100 0-10 10-30 >26
150 0-7.5 7.5-21 10-50
250 0-5 5-12 >8
PPM of CO
Concentration Display Low Level Mid Level CO Alarm
Times in Minutes
400 0-4 3-8 4-15
Display CO
Concentration
in Parts Per
Million (PPM)
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