14
Calibration and Autodiagnosis
42
Calibration
The holder with the integrated glass
standard is used for calibration.
Always store the measurement unit
in the holder. This protects the
measurement optics and ensures
that the standard is always handy.
If you have several devices of this
type, you must use the holder that
belongs to the device in each case
(see the serial number).
Make certain that the standard is
clean and there are no cracks on
it.
When you place the device in the
holder, make certain that it snaps
firmly into place.
Autodiagnosis
Whenever you turn on the device in
the holder, it first performs a self-
test. During this test, any changes
in the measurement signal are
tested against saved calibration
data. This allows for a long-term
calibration so that a new calibration
is required only about once a week.
Beyond that, calibration is only
necessary if there are significant
weather changes (see under
Calibrate). It is recommended that
you perform the self-test in the hol-
der regularly (every day).