Vigilantplant TDLS8000, Руководство пользователя

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<3. Installation, Wiring, Optical Axis Adjustment, and Piping>
3-5
IM 11Y01D01-01EN
45 mm
Minimum allowable opening
45mm
Minimum allowable opening
To secure the minimum allowable
opening, minimize the horizontal
axis deviation of the flange nozzles.
Top view
Side view
Measured gas (duct, wall of flue, etc.)
Figure 3.3 Openings for LU and SCU flanges
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Selecting the Appropriate Process Flanges
(1) Process flanges with optical path length less than 6 m
Use process flanges that conform to any of the flange standards listed in chapter 2.
(2) Process flanges with optical path length greater than or equal to 6 m
The optical axis tends to deviate with longer process optical path lengths. As such, an LAO unit
will be required as a process interface.
NOTE
When an LAO unit is used with a flange with process optical path length greater than or equal to
6 m, only a process flange conforming to ASMEB16.5 4”-Class150(RF) can be used.
3.1.3 Attaching the TDLS8000 to the Process Flange
The installation involves fixing an alignment flange or the like to a process flange first and then
attaching the TDLS8000.
If the process conditions include high temperature, high pressure, or corrosive gas, insert a
process isolation flange (IF8000) between the process flange and alignment flange.
If there is a lot of dust, use an insertion tube. The insertion tube is an interface for preventing dust
from adhering to the TDLS8000 process window. The length is determined by the process flange
length, the dust level in the process, the process gas flow velocity, and so on. If you require an
insertion tube, please consult with Yokogawa.
For details of each component, see “1.1 System configuration” and “2.4 External Dimensions”.
3rd Edition: Jun. 10, 2016-00