Reading Conversions - Cygnus M5-C4P Operating Manual

M5-CYG4P-M-01_Iss5.doc
Stainless Steel 304
Stainless Steel 314
Stainless Steel 316
Tin
Titanium
Tungsten Carbide

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
= t x 4700 / 5920
= t x 0.794
thus : T = t x f
where : T = true thickness of Copper being measured
t = actual reading obtained
f = Conversion Factor (from table)
V
V
The Conversion Factor f: is given for various materials in the
Table of Sound Velocities
5664
5715
5750
3320
6100 - 6230
6660
/ V
COPPER STEEL
= Sound Velocity in Copper : 4700 m/s
COPPER
= Sound Velocity in Steel : 5920 m/s
STEEL
Cygnus 4+ Operating Manual
0.2229
0.2250
0.1163
0.1307
0.2402 – 0.2453
0.2622
[ where: f = V
COPPER
0.956
0.965
0.971
0.561
1.030 – 1.052
1.125
/ V ]
STEEL
135