8. Calibrating CO/CO
2
Sensor
36
Fully open the regulator valve to emit gas. Press key to start
calibration.
Calibrating right now.
If the calibration result is OK
Calibration is completed.
When “END” is displayed, close the valve of the regulator to turn off
the gas.
Press
key to return to the MENU screen where all the changes are
stored.
* If pressing
key before completing the setting, you will return to
the MENU screen without that the changes are saved.
Reading after calibration
Operation
It shows that calibration is ended.
It shows a calibration result.
R
R
e
e
s
s
u
u
l
l
t
t
o
o
f
f
Z
Z
E
E
R
R
O
O
C
C
a
a
l
l
i
i
b
b
r
r
a
a
t
t
i
i
o
o
n
n
:
:
C
C
O
O
c
c
a
a
l
l
i
i
b
b
r
r
a
a
t
t
i
i
o
o
n
n
f
f
a
a
i
i
l
l
s
s
w
w
h
h
e
e
n
n
…
…
1.
CO concentration maintains above
10ppm in 30 seconds after
calibration starts.
2.
the calibration value’s deviation
(Max value-Min value) does not fall
within 6ppm for 20 seconds before
calibration ends.
C
C
O
O
2
2
c
c
a
a
l
l
i
i
b
b
r
r
a
a
t
t
i
i
o
o
n
n
f
f
a
a
i
i
l
l
s
s
w
w
h
h
e
e
n
n
…
…
1.
CO concentration maintains above
200ppm in 30 seconds after
calibration starts.
2.
the calibration value’s deviation
(Max value-Min value) does not fall
within 100ppm for 20 seconds
before calibration ends.
Ready to start calibration:
Countdown initial value is displayed here.
When selecting CO only, the countdown initial value is 90 seconds. When selecting CO2
only, it is 120 seconds. When selecting BOTH, it is 120 seconds.
It indicates that it is calibrating now.
The remaining time before calibration completes.
Summary of Contents for 2212
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