Land 4500 MKII Premier, Operation And Maintenance Manual

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Model 4500 Premier Dust and Opacity Monitor
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B3-6 M203 Clear Stack Simulator Calibration
All instruments are shipped out from the factory configured to customers' requirements. Re-calibration
of the M203 Clear Stack Simulator is required immediately after re-calibration of the instrument. It is
recommended that re-calibration is performed every three years or if a Calibration Audit shows the
instrument to be outside of acceptable limits. Please ensure that all optical surfaces are clean and the
optical path is not obstructed before performing any calibration.
If the flange to flange path length is altered (i.e. due to relocation of the instrument) contact Land
customer services for instrument pathlength setup advice.
IMPORTANT
Re-calibration should be carried out under clear stack conditions or in a laboratory with the
Transceiver set to the correct flange-to-flange path length.
The M203 Clear Stack Simulator should be re-calibrated following a genuine re-
calibration of the instrument only (recommended every three years).
If in any doubt about these instructions, please contact Land Customer Services Department
before proceeding. Take care when handling the reflective surfaces as they can easily be scratched
or made dirty.
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.
Immediately after a genuine clear stack re-calibration perform the following steps for re-calibration of
the M203 Clear Stack Simulator.
1. Press the Maintenance key for 3 seconds until the LED is illuminated. The system is
unlocked and allows parameter access.
2. Enter the password using the
↑
and
↓
keys, then press the ‘ENTER’ (
↵
) key. The default
password is 10.
3. Undo the two quick release clamps on the Transceiver, swing open the case and identify the
Automatic Zero Point Assembly
Continue to step 4.