Siemens SITRANS F FUH1010 Series Operating Instructions Manual page 208

Installation Instructions
2. PREPARING THE PIPE SURFACE
Pick a mounting location with the longest straight run. You must have easy access to at
least one side of your pipe. For uninterrupted operation the mounting location must
remain fully pressurized, even at zero flow.
Decide on your mounting mode (direct or reflect). Always use Reflect Mode whenever
possible or as recommended by the flowmeter installation menu. You may only need
to use Direct Mode if your pipe is plastic.
After receiving the spacing dimensions from the Installation Menu, prepare the pipe
surface. Degrease the entire pipe surface where the CC129-1A damping material is to
be applied and remove any grit, corrosion, rust, loose paint, etc.
NOTE: The effectiveness of the damping material is dependent on how well the
CC129 adhesive bonds to the pipe surface.
If necessary, use the abrasive material provided to create a smooth contact surface for
the transducers (see diagram below).
PREPARING THE PIPE SURFACE
Make sure that you have a matched pair of transducers. They both should have the
same S/N number but marked with either an "A" or "B" (e.g., 100A and 100B).
3. CC129A DRY FILM COUPLANT/DAMPING MATERIAL
Each CC129-1A kit contains one or more 9" x 36" (229 mm x 914 mm) sheet(s) of CC129-
1A film to be cut and applied to the surface of the pipe whose flow is to be measured.
Depending on the transducer size code multiple layers of CC129-1A may be required for
optimal damping. Refer to Table 1 below for the correct CC129-1A kit P/N and final
CC129 coating thickness specified for each transducer size.
NOTE: Each CC129-1A kit contains the correct number of damping sheets
(packaged in a mailing tube) for the associated transducer size code.
1 2 3 4 5 6 1 2 3 4
1 2 3 4 5 6 1 2 3 4
1 2 3 4 5 6 1 2 3 4
2
CC129-1A
PIPE
Smoothed Areas. If necessary, smooth an area
large enough to accommodate transducers and
also several inches around the locations where
the transducers are to be mounted. Clean pipe
again to remove any sanding residue.
CN4973 February 2005
CC129A-7