Ametek Land 4750-PM, User Manual

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User Guide 5 - 14
Particulate Measurement System 4750-PM
Fig. 5-3 High-range audit value label
5.7.2 Performing a Manual Audit
WARNING!
Laser radiation. This product contains a Class 3R laser.
WARNING!
Contaminants. Disconnecting the unit from a positive pressure
stack or opening it may result in hot stack gas or dust escaping.
Use suitable PPE. Check for any specific health implications of
process gas and/or dust before carrying out an instrument audit.
NOTE
Ensure that the shutter (if fitted) and tube are both clean before
assembling and attaching the MAU block. If necessary, clean
these by following the cleaning procedures (see Section 6.3).
L
Note that these factors are still stored in the instrument and will be
applied when the Audit Mode is switched off at the end of the audit
procedure.
1) Set the Audit mode [ AUd ] to ON . This sets the displayed output to the
raw dust reading (i.e. without the Calibration Factor or offset applied;
see Section 5.2.8).
2) Unhook the quick-release clamp and open the sensor body (Fig. 5-4).
3) Close the flue gas blocker (if fitted) to prevent stack gas exiting the
open port.