04 Series for CO(-H2)
Chapter 5: User Mode and Calibration • 47
3. Use AIR to scroll to the
E-CAL
item.
4. Press and release POWER MODE. The display shows the gas assigned to Cylinder A and
its assigned calibration value (see pg.49 if the calibration value does not match the
calibration gas cylinder’s concentration). The bottom of the screen alternates between
“CYL A” and “E-CAL”.
5. If necessary, use AIR to scroll to the Easy Cal screen for the gas you want to calibrate. As
shipped from the factory, CO is assigned to Cylinder A and H
2
is assigned to Cylinder B.
6. Press and release POWER MODE.
7. The gas reading flashes and the bottom of the screen says “GAS IN”.
8. Turn the regulator knob counterclockwise to open the regulator.
9. Once the gas reading reaches 10% of the auto calibration value, the screen starts counting
down from the time specified in the
E-CAL
User Mode item. In the example below,
E-
CAL
is set to
60
seconds.
To back out of the gas application screen without performing the calibration, press and
release AIR and POWER MODE together.
If the reading never reaches 10% of the auto calibration value, press and release POWER
MODE to fail the calibration.
10. At the end of the countdown, the instrument makes the span adjustment.
E-CAL
CO
50
E-CAL
ppm
CO
50
CYL A
ppm
CO
0
GAS IN
ppm
CO
12
CAL 60
ppm
CO
12
APLY 60
ppm
