Land 4500 MKII Premier, Operation And Maintenance Manual

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Model 4500 Premier Dust and Opacity Monitor
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Fitting the Simulator
The M203 Clear Stack Simulator (Part Number 703.902) is used during the Re-calibration routine
when true clear stack conditions are unobtainable. The Simulator should be fitted, as described
below, when 'Clear path' is displayed by the instrument (see Re-calibration). Follow the steps below,
being careful NOT to move the sliding adjusting plate on the back of the Simulator.
1. The User interface display should read 'Clear path' (see Re-calibration).
2. On the Transceiver undo the two quick release clamps and swing the unit open.
3. Remove the 5 crimp connectors from below the Automatic Zero Point Assembly. Make a note of
the orientation of the wiring for reconnection.
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.
4. Undo the 2 socket head screws using the 5 mm hexagonal (Allen) key supplied and remove
the Automatic Zero Point Assembly. Store in safe place until required for normal running of
instrument.
Continue to step 5.
Opacity: 0%
Clear Path
↵ ↵↵
↵↵
↵ ↵↵
↵↵
CALIBRATION
Opacity: 0%
Re-Calibrate:
5 Crimp
Connectors