Flexim FLUXUS WW, User Manual

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C Reference FLUXUS WW
UMFLUXUS_WWV1-1EN, 2018-02-28 141
C Reference
The following tables provide assistance for the user. The accuracy of the data depends on the composition, temperature
and processing of the material. FLEXIM does not assume liability for any inaccuracies.
C.1 Sound speed of selected pipe and lining materials at 20 °C
The values of some of these materials are stored in the internal database of the transmitter. Column c
flow
shows the sound
speed (longitudinal or transversal) used for the flow measurement.
The sound speed depends on the composition and the manufacturing process of the material. The sound speed of alloys
and cast materials fluctuates strongly. The values only serve as an orientation.
material (display) explanation c
trans

[m/s]
c
long

[m/s]
c
flow
Carbon Steel
steel (normal) 3 230 5 930 trans
Stainless Steel
steel, stainless 3 100 5 790 trans
DUPLEX
duplex stainless steel 3 272 5 720 trans
Ductile Iron
ductile iron 2 650 - trans
Asbestos Cement
asbestos cement 2 200 - trans
Titanium
titanium 3 067 5 955 trans
Copper
copper 2 260 4 700 trans
Aluminium
aluminum 3 100 6 300 trans
Brass
brass 2 100 4 300 trans
Plastic
plastic 1 120 2 000 long
GRP
glass reinforced plastic (GRP) - 2 650 long
PVC
polyvinyl chloride - 2 395 long
PE
polyethylene 540 1 950 long
PP
polypropylene 2 600 2 550 trans
Bitumen
bitumen 2 500 - trans
Acrylic
acrylic glass 1 250 2 730 long
Lead
lead 700 2 200 long
Cu-Ni-Fe
copper-nickel-iron alloy 2 510 4 900 trans
Grey Cast Iron
grey cast iron 2 200 4 600 trans
Rubber
rubber 1 900 2 400 trans
Glass
glass 3 400 5 600 trans
PFA
perfluoralcoxy 500 1 185 long
PVDF
polyvinylidene fluorid 760 2 050 long
Sintimid
Sintimid - 2 472 long
Teka PEEK
Teka PEEK - 2 534 long
Tekason
Tekason - 2 230 long