Gossen Mavomonitor - Manual (Page 8)

8 GOSSEN Foto- und Lichtmeßtechnik
7 Maintenance
7.1 Calibration Service
The instruments are calibrated at the light of
a scientific standard lamp having a colour
temperature of 2856 K, fully in accordance with
the PTB standard.
Depending on how the instrument is being used
we recommend a recalibration interval between
12 and 18 months.
For this purpose please contact our
Calibration Service Department
(telephone +49 911 8602 172).
7.2 Cleaning and Maintenance
Keep the instrument dry and clean, away from
dust. Avoid exposing the sensor to unnecessary
light.
Please use a slightly damp cloth only for cleaning
the plastic surfaces; avoid the use of cleaning
agents or other strong chemicals. The lenses
should be cleaned with a special cloth or brushes
as used for optics.