Land 4500 MKII Premier, Operation And Maintenance Manual

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Model 4500 Premier Dust and Opacity Monitor
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Zero Point Reflector, Aperture Plate and Grating Installation
A range of apertures and gratings for the Zero Point Reflector are provided with the instrument.
CAUTION
Do not attempt to ROTATE the zero point reflector by hand. The precision gearbox
will be irreparably damaged. See section B3-1 for identification.
Removing the Zero Point Reflector
1
2
2
3
Zero Point Reflector
Key.
1. Zero Point Reflector
2. two M3 socket head screws
3. Automatic Zero Point Assembly
1. Undo the two quick release clamps on the Transceiver and swing the unit open, revealing the
Automatic Zero Point Assembly.
2. Undo the two M3 socket head screws (2) (as illustrated above) holding the Zero Point
Reflector in place and remove it from the Automatic Zero Point Assembly using a 2.5mm
Allen Key.
3. To replace, reverse the procedure.