TSI IAQ50 User Manual
Page 30
30
3. Turn the IAQ50 on. It will flash “CAL”
on the top row and beep intermit-
tently.
4. Press and hold the CO
2
key to begin
the calibration procedure. The display
will begin a countdown from 5 to 0.
Release the key when the display
reads 0. If the key is released too soon
or too late, the instrument will go back
to beeping and flashing “CAL”. If
you’ve done this step correctly,
“ZerO” will appear on the display and
the beeping will have stopped.
5. Slide the calibration collar onto the
probe until it stops. It should cover the
set of holes closest to the handle.
6. Install the regulator on the zero
calibration gas tank and connect tub-
ing from the regulator to the inlet fit-
ting on the CO
2
calibration collar.
7. Turn on gas flow.
8. Press and release the READ key to
begin a zero reading. The IAQ50 be-
gins a 60 second countdown during
the zero reading. The actual zero read-
ing is taken in the last 10 seconds.
When the countdown is completed,