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Chapter 2. Installing the Pipe Nozzles
2.3
Nozzle Installation - MR1 Mid-Radius Path
CAUTION!
the
configuration, which uses p/n
MR1
p/n
591-516
have been provided. Failure to do so will severely degrade the accuracy of your system.
CAUTION!
Nozzle Installation Kit is for an
MR2 Mid-Radius Path" on page 36
A non-diametrical signal path is one in which the ultrasonic signal between the two transducers does not travel along a
diameter of the pipe. For a mid-radius installation, the signal path is offset from the pipe diameter by a distance equal to
1/2 of the pipe radius (see Figure 24 below). Notice that the 1/2 radius offset can be applied either above or below the
horizontal pipe diameter.
Note: As the installation procedures are identical, the instructions in this section will show the
configuration only, as an example.
Top View
FLOW
MR1 Top Mid-Radius
The
path nozzle installation procedure includes the following steps:
MR1 Mid-Radius
1. "Identifying the Nozzle Installation Kit Components - MR1 Mid-Radius" on page 19
2. "Selecting and Marking the First Nozzle Location - MR1 Mid-Radius" on page 20
3. "Determining and Marking the Second Nozzle Location - MR1 Mid-Radius" on page 24
4. "Installing the First Welding Boss - MR1 Mid-Radius" on page 29
5. "Installing the First Nozzle - MR1 Mid-Radius" on page 32
6. "Installing the Second Welding Boss and Nozzle MR1 Mid-Radius" on page 34
7. Proceed to one of the following:
•
"Hot Tapping the Pipe - MR1 Mid-Radius" on page 35
•
"Cold Tapping the Pipe - MR1 Mid-Radius" on page 35
18
There are two different variations of the mid-radius nozzle installation. These are named
bosses. It is critical that you use the correct mid-radius configuration for the nozzles you
The instructions in this section are for the
MR2 Mid-Radius
End View
Figure 24: MR1 Mid-Radius Path Configurations
bosses, and the
591-338
MR1 Mid-Radius
path, proceed immediately to "Nozzle Installation -
Top View
FLOW
MR1 Bottom Mid-Radius
configuration, which uses
MR2
path configuration only. If your
MR1 Top Mid-Radius
Model T17 Installation Guide
End View
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