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See also
Mounting temperature sensors (Page 56)
Sensor wiring (Page 48)
4.6.5
Dry Film Couplant/Damping Material
Siemens dry film couplant/damping material is an adhesive backed viscoelastic polymer
sheet that provides excellent acoustic coupling without concern for couplant washout. For
clamp-on gas applications this material effectively absorbs unwanted pipe noise to lower the
minimum pressure required for flow measurement.
Note
In the following paragraphs, references to the 9 o'clock position indicate the section of
horizontal pipe that is closest to you.
Preparing the pipe surface
1. 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.
2. Decide on your mounting mode (direct or reflect). Always use Reflect Mode whenever
possible or as recommended by the transmitter installation menu. You may only need to
use Direct Mode if your pipe is plastic.
3. After receiving the spacing dimensions from the Installation Menu, prepare the pipe
surface. Degrease the entire pipe surface where the 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 adhesive bonds
to the pipe surface.
FSS200 clamp-on sensors
Installation Manual, 08/2017, A5E36255466-AC
Installing/mounting
4.6 Installation instructions
33
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