Ametek Land 4500 MKIII, User Manual

Page: 13 / 128

A - 7
Model 4500 MkIII Opacity and Dust Monitor
User Guide
6) Position the Transceiver mounting flange with the “TOP” label in the 12
o’clock position and tack weld the mounting flange in place.
Accurate positioning of the flange at this stage is critical to the
operation of the instrument. If the flange is not parallel to the
stack wall it will be impossible to align the instrument correctly.
7) Cut a hole around the Retro-Reflector pilot hole, large enough to allow
eventual welding of the outside of the flange stub to the stack wall. The
mounting flange plate must be parallel to the stack wall.
8) If the measuring path is short (under 2m / 6.5ft) and easily accessible
the flanges can be aligned using a straight piece of tube.
a) Slide the tube through both flanges. Ensuring the specified flange-
to-flange measuring path is maintained to within ±1%.
b) Tack weld the Retro-Reflector mounting flange in place.
c) Make any necessary adjustments to the Transceiver mounting
flange to ensure alignment between the two flanges is maintained.
Weld the flange permanently in place.
d) Make any necessary adjustments and weld the Retro-Reflector
mounting flange permanently in place.
An optical flange alignment tool (Part number 703.070) can be
used to ensure the proper alignment of the flanges. Contact Land
Instruments for more information.
TOP