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Chapter 2.
Installing the Pipe Nozzles
2.1
Introduction
Before the T17 transducers can be installed into the pipe, you will need to install pipe nozzles. Nozzles may be installed
as part of a fabricated spoolpiece, or by using a hot or cold tapping process with a GE Nozzle Installation Kit.
IMPORTANT: These procedures only apply if you are using a Nozzle Installation Kit. If you are tapping the pipe
without using a Nozzle Installation Kit, refer to the supplied drawings in your shipment. This procedure
is written and illustrated for installations on horizontal pipes. However, the procedure is the same for
vertical pipe installations.
This chapter describes how to install pipe nozzles in the two available flow range options:
•
Standard flow range operation of 0.1 to 328 f/s (0.03 to 100 m/s):
This configuration uses two 180° head T17 transducers.
•
Extended flow range operation of 0.1 to 394 f/s (0.03 to 120 m/s):
This configuration uses one 180° head T17 transducer and one 174° head T17 transducer.
Either of the above flow range options may be used in one of three possible signal path configurations (Figure 2 below
illustrates the mirror-image difference between the nozzles for the two mid-radius configurations):
•
"Nozzle Installation - Diametrical Path" on page 4
•
"Nozzle Installation - MR1 Mid-Radius Path" on page 18
•
"Nozzle Installation - MR2 Mid-Radius Path" on page 36
Figure 2: Top View of Mid-Radius Nozzles (MR1 on Left, MR2 on Right)
CAUTION!
signal path configuration only. You must properly identify your kit components and then follow only
those nozzle installation instructions in the appropriate section.
Model T17 Installation Guide
The components in your Nozzle Installation Kit have been designed for one specific
Chapter 2. Installing the Pipe Nozzles
3
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