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Pressure wave velocity is dependant primarily upon pipe diameter and material. Correct determination of the
pressure wave velocity in the pipe is very important and can be achieved in two ways. The first is to use
“out
of bracket” events, which pass both
PIPEMINDER-S devices, to estimate the wave speed. The second is to use
a look up table. Table 2 shows how wave velocities vary with both pipe material and diameter (the reason for
the range in each case).
Pipe Material
Pressure Wave Velocity
Steel
910 to 1390 m/s
Cast Iron
1050 to 1280 m/s
Asbestos Cement
900 to 1080 m/s
MDPE
340 to 380 m/s
Table 2: Example Wave Speeds
There are many technical papers, presentations and discussions on source identification and the user is
encouraged to contact Syrinix directly for further guidance.
