Chapter 2. Installation
18 TransPort
®
PT900 User’s Manual
2.5.5 Installing the Transducers (cont.)
4. Move both cams to the loaded position, so that the clamp holders rest in
their furthest radial position from the pipe (see Figure 19 below).
Figure 19: Loaded Cams
5. Apply the supplied couplant to both transducer faces (see Figure 20
below). The couplant displaces any air gaps between the transducer and
the pipe to ensure a uniform acoustic signal path. For pipes up to 14” OD,
do not apply couplant in the red areas shown; for pipes >14” OD, cover
the entire surface with couplant.
Note: Using a water-based lubricant as a couplant is not recommended for
heated or long-term installations.
Figure 20: Transducer Face with Couplant
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