Ametek Land 4200, Руководство пользователя

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Page 16
User Guide Model 4200 Dust & Opacity Monitor
Cut a hole around the retro-reflector pilot hole, large enough to allow eventual
welding of the OD of the flange stub to the stack wall. The mounting flange plate
must be aligned parallel to the stack wall.
Important
The Land Model 4200 Opacity Monitor is factory set to the flange-to-flange
measuring path as specified by the customer at the time of sale. During
the welding and alignment procedures, be sure the flange-to-flange
measurement path does not exceed ±1% of the distance specified.
If the measuring path is easily accessible and short enough, the flanges can be
aligned with an alignment tube (Fig 5-6). First slide the alignment tube through
both flanges. Then, ensure the specified flange-to-flange measuring path is
maintained to within ±1%, and tack weld the retro reflector flange in place.
Make the necessary adjustments and weld the transmissometer flange in place.
Finally, make the necessary adjustments and weld the retro-reflector flange in
place.
Fig. 5-6