Ametek Land 4200, Руководство пользователя

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Page 17
User Guide Model 4200 Dust & Opacity Monitor
5.3 Alignment Tool
When the measurement length is too long to use an alignment pipe,
Land Instruments International can supply a flange alignment tool to
aid in aligning the flanges. Contact Land Instruments International if
this part is required.
The flange alignment tool consists of two plates which are mounted to the flanges
(Fig. 5-7a). One plate supports a light source and the other plate supports
optics with a target in the centre. When the flanges are properly aligned the
light spot must be located in the centre of this target (Fig. 5-7b).
To use the flange alignment tool, follow these instructions:
Important
During the welding and alignment procedures be sure the flange-to-flange
pathlength is accurately maintained. Ensure flange orientation is correct.
1) Tack weld the standoff pipes to the stack - diametrically opposite.
2) Remove the 3 - locknuts and 24 disc springs from each flange and safely
store.
3) Use the free running nuts supplied with the alignment kit in place of the
locknuts
4) Mount the flange alignment tool according to Fig. 5-7b.
5) Align standpipe No 1 by sighting the optics in alignment tool. Weld standpipe
1.
6) Reverse the flange alignment tools (switch components around).
7) Align standpipe No 2 by sighting the optics in alignment tool. Weld standpipe
2.
8) Replace the disc springs and locknuts on the bolts (Fig. 5-3/5-4).