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CALIBRATION
1) CO 0 ppm calibration
2) CO sensitivity calib.
3) CO
2
Calibration
4) Calibration Type
5) Exit
select <ENTER>confirm
8.
Enter the sensitivity value, select the option OK and confirm with
ENTER
: the instru-
ment stores the value and returns to the calibration submenu.
CO SENSITIVITY CALIB.
Set CO sensor sensiti-
vity
50.0 nA/ppm
.
OK
.
CANCEL
select <ENTER>confirm
9.
Wait for at least 5 minutes after starting the instrument before detecting the measure-
ment, so as to let the measurement become stable. If necessary, perform zero calibration
of the new CO sensor.
8.6.3
CO
2
SENSOR CALIBRATION
This calibration is available in HD35ED[G]14bNAB and HD35ED[G]1NAB models.
The CO
2
sensor can be calibrated to any reference value within the measurement range.
Calibration procedure:
1.
Place the instrument in an environment with known CO
2
concentration (for ex. in clean air).
2.
Wait for at least 15 minutes for the measurement to become stable, with the instrument
on.
3.
Access the menu with the administrator password and select the item
Calibration
⇒
CO
2
calibration
. Press
ENTER
to confirm.
CALIBRATION
1) CO 0 ppm calibration
2) CO sensitivity calib.
3) CO
2
Calibration
4) Calibration Type
5) Exit
select <ENTER>confirm
4.
The value measured by the instrument appears on the left, and the calibration point on the
right. The instrument initially proposes the same measurement value as calibration point.
5.
Enter the calibration value, select the option OK and confirm with
ENTER
.
CO
2
CALIBRATION
Put sensor in known
gas concentration
Meas. [ppm] Cal. [ppm]
472 450
OK
.
CANCEL
select <ENTER>confirm
