20
If the measurement is not acceptable or
the value is not yet stable, wait a minute
and then take another reading to over-
write the value on the top line.
Once the top line value is acceptable,
press the 5 or 6 keys to move the icon
to either Supply or %OA, whichever
reading you are prepared to make next.
Repeat the procedure with both a Sup-
ply measurement and an Outside Air
measurement.
Remember, the top line measurement is
what will be used in the calculation.
Once all three readings are stored, press
the 5 or 6 keys to advance to %OA.
“OA%” will appear on the display along
with the % outside air value. To put this
%OA value and the values from the
three other modes into memory, press
the READ/ENTER key.