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Chapter 4. Inserting T17 Transducers into the Pipe
4.2.2 Mounting the Insertion Mechanism (cont.)
8. Identify the upstream and downstream transducer assemblies.
For Standard Velocity Range applications, the upstream and downstream nozzle designations are interchangeable
because the system is bi-directional.
For Extended Velocity Range applications, the system is not bi-directional. Note which valve is designated as upstream
and as downstream on the pipe. Then identify the upstream and downstream insertion mechanism assemblies. The
downstream assembly is labeled with an alignment mark on the Barrel flange and an associated scribe line on the
transducer tube near the connector end (see Figure 72 below). The downstream transducer head is angled 6° and must
face into the flow.
9. Begin the insertion of either the upstream or the downstream assembly.
62
Alignment Marking on Flange
at Top of Barrel
Scribe Line on Transducer Tube
Figure 72: Identify the Downstream Insertion Mechanism
FLOW
Model T17 Installation Guide
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