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3-6
1010BXFM-3
Section 3
We recommend Direct mount whenever possible. This is the simplest way to mount the Inter-
face Detector’s transducers. Direct mount provides a shorter sonic beam path. This usually
improves performance with sonically attenuative liquids or pipe materials. We also recom-
mend using Direct mount for plastic pipes. Compared to Direct mounting, Reflect mount re-
quires almost double the amount of a straight pipe run. Therefore, Direct mount may be the
only option if the availability of mounting space is limited.
Reflect mount resists abnormal flow profile conditions such as cross-flow within the flow stream.
Reflect Mode supports the AutoZero™ function, which zeroes the meter automatically with-
out user-participation. In addition, Reflect mount may be the only possibility if conditions do
not allow access to the opposite side of the pipe.
DIRECT MOUNT
(Pipe shown in Top View for ease in visualizing sonic path)
Upstream
Transducer
Sonic Path
Pipe
Downstream
Transducer
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Cleaned areas. Clean an area 1/2” on either side
of transducer and an additional 1/2” along the length
of the transducer.
Pipe
PREPARING THE PIPE SURFACE
3.3.4 PREPARING THE PIPE
Pick a mounting location. You must have easy access to at least one side of your pipe. The
mounting location must remain full, even at zero flow.
Decide on your mounting mode (Direct or Reflect). Always use Direct Mode whenever
possible. You may only need to use Reflect Mode if your pipe is not accessible on both
sides.
After receiving the spacing dimensions from the Installation Menu, prepare the pipe sur-
face. De-grease the surface, if necessary, and remove any grit, corrosion, rust, loose paint,
etc. Use abrasive material provided to provide a clean contact surface for the transducers.
Refer to the next sections for illustrated instructions on how to locate each area to be
cleaned and how to use each mounting option.
Please note that the instructions show vertical mounting for clarity purposes only. Do
not install transducers on the top of a pipe.
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