ALTANA Haze-Gard Dual - Manual (Page 20)

19
English
Zero Calibration
Please cover
haze-port
Ready: OPERATE
Escape: SET UP
CALIBRATION ASTM
6.1 Calibration
Thanks to the use of state-of-the-art
technology and the reference beam
principle, calibration does not have
to be carried out very often. We
recommend a calibration interval of
two months. Calibration is also
necessary:
• at the initial startup,
• in the event of a drastic change in
ambient temperature (for
example, if the device has been
moved to a new location),
• if a message appears on the
display requesting calibration (e.g.
following the modification of
stored calibration values),
• if the measurement method has
been changed.
6.2 How to Calibrate the Device
Calibration is carried out in the SET-
UP Menu. This menu is opened by
pressing the “set up” button. Using
the cursor buttons, select the menu
item “Calibration” and then press
the “operate” button. The dark
measurement is carried out. Cover
the “haze-port” with the dark
standard and press the “operate”
button again.
To interrupt the calibration procedu-
re at any time, press the “set up”
button.
6 Calibration