Yokogawa In-Situ Gas Analyzer TDLS200 - Manual (Page 16)

The standard fl ange sizes are either 2” or 3” 150# R.F. ANSI as well as DN50 and DN80. Please check the exact
fl ange size specifi ed and provided for the particular installation. Other fl ange sizes and a variety of materials (to
suit the process) are available so please check these details prior to installing the fl anges on the process.
Note: The process isolation valves should have at least a 1½” (38mm) diameter clear bore size
(aperture) to ensure there is suffi cient tolerance to align the laser beam after installation. Ducts and
Stacks that have thin and fl exible walls should be reinforced to ensure that the laser beam alignment is
maintained at all times. Rigid mounting for the process fl anges is highly recommended to ensure a
lignment is maintained.
In situations where the process fl anges are mounted to these thin and fl exible duct/stack walls, a larger
reinforcing plate should be welded around the mounting fl ange area to increase the attaching region. The fi gure
below depicts a typical suggestion however; it is the installer’s responsibility to ensure appropriately rigid
installation is provided for the analyzer.
Figure 3 - Launch or Detect Unit Installation Dimensions
Figure 4 - Suggested Reinforcing Plate for Launch or Detect Unit Flanges- reduce fl exing with mechnical
reinforcement to duck/stack walls
3-3 <3 INSTALLATION AND WIRING>
IM 11Y01B02-11E-A 5th Edition :June 5, 2012-00