Chapter 4. Inserting T17 Transducers into the Pipe
62
Model T17 Installation Guide
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
below). The downstream transducer head is angled 6° and
must
face into the flow.
Figure 72: Identify the Downstream Insertion Mechanism
9.
Begin the insertion of either the upstream or the downstream assembly.
Scribe Line on Transducer Tube
Alignment Marking on Flange
at Top of Barrel
FLOW