TSI IAQ10 - Manual (Page 7)

5
SECTION 5
Operation of the Model IAQ10
Note: Do not hold the instrument close to your
face. Humans exhale CO
2
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