Siemens SITRANS FUH1010PVDX Operating Instructions Manual page 210

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 pres-
surized, 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 1 2 3 4 5
1 2 3 4 1 2 3 4 5
2
CC129-1A
PIPE
Smoothed Areas. If necessary, smooth an area large
enough to accommodate transducers and also sev-
eral inches around the locations where the trans-
ducers are to be mounted. Clean pipe again to re-
move any sanding residue.
CC129A-7
CN4973 February 2005