Dimension Drawings; Process Flange And Purge Tube Dimensions - Siemens LDS 6 Operating Instructions Manual

Dimension drawings

8.1

Process flange and purge tube dimensions

The process flange dimensions should comply to the DIN standard (DN65/PN6) or the ANSI
standard (ANSI 4"/150 lbf). The process flange dimensions are shown in Figure 2.2 and Figure
2.3.
Customer process flanges are not supplied by Siemens.
For engine DeNox applications the mounting of the Optics Housing CD 6 requires a specially
designed flange and a special motor wedge (both delivered by Siemens).
The standard purge tube from Siemens is 400 mm (the tube protrudes 370 mm into the process
from the flange surface). 900 mm and 1200 mm tubes can be supplied as an option. If the purge
tube is shorter than the flange tube there could be a build up of dust in front of the purge tube
that eventually blocks the light-beam.
The 800 and 1200 mm purging tubes have a larger outer diameter. If long tubes for the process
flanges are used (because of thick process walls) it is important to makes sure that the ±2 deg
adjustment can be maintained.
LDS 6, Optics Housing CD 6
Operating Instructions, 01/2022, A5E01134377-05
CAUTION
8
41