Reset; Co 2 -Calibration - Wohler CDL 110 Instructions De Service

7.8

Reset

Fig. 16: Reset-mode
Fig. 17. no reset
8 CO -Calibration
2
The meter is calibrated at standard 400 ppm CO
to do manual calibration regularly and especially before using it for the first time to main-
tain good accuracy. The calibration will last about 5 minutes.
When accuracy becomes a concern after a long time usage or other special conditions,
return to dealers for standard calibration.
WARNING!
Do not calibrate the meter in the air with unknown CO
as 400 ppm and this fact leads to inaccurate measurements.
In normal mode press and hold the SET key
•
for three seconds to enter P1.0 mode.
• Press ▲ three times to enter P4.0 mode for
reverting the meter to default status, see Fig.
16.
Press SET to enter P4.1 mode with blinking
•
"No" (default), see Fig. 17, so that no reset will
be done.
• To switch the status (Display "YES") press ▲
or MIN/MAX▼. When "Yes" is chosen, y reset
to the parameters specified above will be
done.
Then press SET to save the setting or press
•
ESC without saving and return to P4.0 mode.
If you choose "Yes" the meter is reset to the fol-
lowing defaults:
Parameter
P 1.1
P 1.2
P 1.3
P 2.1
P 4.1
•
concentration in factory. It is suggested
2
2
CO2-Calibration
Default
700 ppm
1000 ppm
5000 ppm
°C
No (no reset)
level. Otherwise, it will be taken
EN
45