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2000 Fire Door-Fan Manual updated 2002-05-28 Page 30 of 58
Use averaging on digital gauge to reduce the effect of wind.
Set the Time averaging to 5 seconds. If the second
reading varies more than 10% from the first reading,
set it to 10 seconds. If the variation is still too much,
set it to 30 seconds. Take at least three readings. The
last two must be within 5% of each other in order for it
to be useable.