5
SECTION 5
Operation of the Model IAQ10
Note: Do not hold the instrument close to your
face. Humans exhale CO2 and this will affect
the accuracy of the readings.
When pressing the keys on the keypad, the
Model IAQ10 will beep to confirm the
function. If you press a key and the Model
IAQ10 does not beep, the Model IAQ10
does not allow that function during the
selected mode. (See Section 9 for informa-
tion on disabling this feature through an
internal DIP switch.)
ON/OFF Key
Press the ON/OFF key to turn the Model
IAQ10 on and off. When the instrument is
first turned on, it goes through a prepro-
grammed power-up sequence that includes
an internal self-check.
First, all displayable LCD segments will
appear. If a problem is detected, the display
will show “CAL” to indicate that it should
be returned for servicing and/or