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CO
DISPLAY PAGES
2
Press the CO
LCD area. The pages are shown below for CO
IPS% and cfm/p.
TIME WEIGHTED AVERAGE (TWA)
TWA is Time Weighted Average (8 hours); the meter updates the
reading every 60 seconds. If the meter has been powered on for less
than 8 hours, the TWA value will be the weighted average of readings
taken since the unit was powered ON.
button to change the CO
2
display page on the top-tier
2
, Max-Min, TWA, STEL,
2
7
CO220-en-US_V1.5 8/20
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