Rev. 01/11 - 2.9 - TFXL-X
V-Mount and W-Mount Installation
1. For DTTN transducers, place a single bead of couplant,
approximately ½ inch (12 mm) thick on the flat face of the
transducer. See Figure 2.2. Generally, a silicone-based grease
is used as an acoustic couplant, but any grease-like substance
that is rated not to “flow” at the temperature that the pipe may
operate at will be acceptable.
2. Place the upstream transducer in position and secure with a
stainless steel strap. Straps should be placed in the arched
groove on the end of the transducer. A screw is provided to
help hold the transducer onto the strap. Verify that the
transducer is true to the pipe—adjust as necessary. Tighten
transducer strap securely.
3. Place the downstream transducer on the pipe at the calculated
transducer spacing. See Figure 2.3 on page 2.10. Using firm
hand pressure, slowly move the transducer both towards and
away from the upstream transducer while observing Signal
Strength. Clamp the transducer at the position where the
highest Signal Strength is observed. Signal Strength of
between 7 and 100 is acceptable.
4. If after adjustment of the transducers the Signal Strength does
not rise to above 7, then an alternate transducer mounting
method should be selected. If the mounting method was
W-Mount, then reconfigure the TFXL for V-Mount, reset the
TFXL, move the downstream transducer to the new location
and repeat Step 3.
PART 2 - TRANSDUCER INSTALLATION
Figure 2.2
Application of Couplant
DTTN V-Mount
and W-Mount
Transducer
Installation
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