Ametek Land 4500 MKIII, User Manual

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A - 13
Model 4500 MkIII Opacity and Dust Monitor
User Guide
4) Place a rubber sealing band over the mounting flanges for the
Transceiver and Retro-Reflector. It cannot be fitted after the instrument
is mounted on the flange.
5) Remove the three M10 nuts (4) and dome washers (2) from the
mounting flange, and locate the Transceiver on to the studs (3).
6) Replace the Nyloc nuts (4) and dome washers (2) and tighten them,
compressing the spring washers (5), until there is a gap of 8 mm (5/16
in) between the two flanges, all round. Pull the sealing band (6) into
place over the gap. Anti-seize compound may be useful to prevent
galling of the threads in extremely hot or corrosive environments such
as coastal locations.
7) Install the Retro-Reflector following the same procedure.
CAUTION
If the instrument is being hoisted into position, the case clips
must be covered or taped closed, to prevent them from opening
accidentally.
A3.8 Mounting the Transceiver and Retro-Reflector
1) Ideally, the instrument should be installed when the process is not
operating and the stack is cold.
2) The air blower unit should be operating and connected to the
Transceiver and Retro-Reflector before the instrument is mounted on to
the flanges.
3) Check that each mounting stud has the correct number of spring
washers (5) arranged as shown - these may have been removed if the
flange alignment tool was used. The standard flange 703.020 has four
pairs of spring washers on each mounting stud.
NOTE
If the 4500 MkIII is replacing a 4500 MkII, a larger size of
standpipe (702.790) is used. This requires six pairs of spring
washers on each mounting stud.
1
2 3
4 5
6
8mm (5/16in)
Transceiver
Mounting
flange
7