M5-CYG4-M-01_Iss6.doc
Cygnus 4 Operating Manual
57
Stainless Steel 304
5664
0.2229
0.956
Stainless Steel 314
5715
0.2250
0.965
Stainless Steel 316
5750
0.1163
0.971
Tin
3320
0.1307
0.561
Titanium
6100 - 6230
0.2402 – 0.2453
1.030 – 1.052
Tungsten Carbide
6660
0.2622
1.125
Reading Conversions
If only a few measurements are to be taken on a material other
than Steel, it may be easier to leave the calibration set for Steel
and merely convert the readings by multiplying by the
Conversion Factor for the material being measured.
This method avoids unnecessary recalibration.
Example.
The Gauge is calibrated for Steel [5920 m/s], but the reading is
being taken on Copper [4700 m/s] :
T = t x V
COPPER
/ V
STEEL
= t x 4700 / 5920
= t x 0.794
thus :
T = t x f
[ where: f = V
COPPER
/ V
STEEL
]
where : T = true thickness of Copper being measured
t = actual reading obtained
f = Conversion Factor (from table)
V
COPPER
= Sound Velocity in Copper : 4700 m/s
V
STEEL
= Sound Velocity in Steel : 5920 m/s
The Conversion Factor f: is given for various materials in the
Table of Sound Velocities
