Calex ExTempMini Series Schnellstart-Handbuch - Seite 9
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MOUNTING BRACKETS
AIR PURGE COLLAR
The lens must be kept clean and dry for an accurate reading. The optional air purge collar is
used to keep dust, fumes, moisture, and other contaminants away from the lens. It must be
screwed on fully. There are two models of air purge collar to suit the different optics (see
below).
Air flows into the hose barb fitting and out of the front aperture. Air flow should be no more
than 5 to 15 litres/min. Clean or 'instrument' air is recommended.
Air purge collar for 20:1 optics
Model APM
All dimensions in mm
9