CiDRA SONARtrac PW VF-100 - Manual (Page 25)

20831-01 Rev 05 Page 5-7
5.5 Process Piping Considerations
The passive sonar meter sensor head assembly mounts on the
process pipe. There is no need for breaking any process connections
or for shutting down the process. The sensor head must be installed
in a location that ensures a full pipe during operation.
Check the sensor head label to ensure the sensor head is approved
for the area hazard rating in the location where it will be installed.
5.5.1 Pipe Preparation
Remove pipe insulation if it is present.
WARNING
Asbestos containing insulation materials may be present.
Asbestos fibers have been known to cause health problems. If
unsure of the contents of pipe insulation materials contact the
plant representative for that area.
WARNING
Process Heating Tapes may be present. This may present an
electrical shock hazard. Follow plant Lock-out / Tag-out
requirements.
WARNING
Process pipes may be hot. A burn hazard may exist. Use care
when working with hot pipes.
Clean pipe surface using a scraper, sand paper strips, a water rinse
and final wipe with a clean rag. The pipe surface under the sensor
band assembly should be clean and free of rust and rust spots, grit,
grease, protruding weld spots and weld splatter. A good guideline is
to clean the pipe as if it were going to be painted.
Avoid dents as they can create flow disturbances within the pipe.
Select a location that ensures full contact between the sensor head
and the pipe.
Painted surfaces are normally satisfactory provided they are smooth
and free of chips over 0.25-inch (6.4 mm) diameter. Ensure a smooth
painted finish by sanding the area where the sensor will be mounted.
Finally, wipe the pipe using a damp cloth rag or paper towel.