Instruction 0024-9395
18
Fyrite Pro
4.1.2 Measuring CO
(Model 100/105/120/125)
1. Turn ON the analyzer and allow it to warm-up per Section 4.1.1.
Important:
If the CO channel is set up for auto zero, then
the analyzer
must be turned ON in fresh air
; otherwise,
incorrect CO readings will occur. Refer to Section 3.5.3.
When the CO channel is set up for manual zero, and if the
CO reading is higher than zero when sampling fresh air, then
manually zero the CO channel per Section 5.6, Steps 1 thru 4.
2. For the Model 100/105, the CO Screen should already be displayed. For
the Model 120/125, push
ENTER
until the CO & O
2
Screen appears.
Model 100
Model 105
Model 120/125
3. Insert the analyzer’s probe into the area to be tested and observe
the detected CO level on the LCD.
4.1.3 Measuring Draft
(Model 105/125)
1. Turn ON the analyzer and allow it to warm-up per Section 4.1.1.
2. For the Model 105, the CO & Draft Screen should already be dis-
played. For the Model 125, press
ENTER
and then press the
▲
or
▼
button as necessary to display this screen.
3. The draft reading should be zero when sampling room air. If not,
press the
▼
button
once
to display the Draft Zero Screen, and then
press the
ENTER
button to zero the draft channel to ambient atmo-
spheric conditions.
4. Insert the analyzer’s probe into the area to be tested and observe
the draft reading on the LCD.
