Reading Conversions - Cygnus 1 Ex Manual

Brass (Naval)
Brass (CuZn30)
Copper
Core Ten
Grey Cast Iron
Inconel
Lead
Monel
Nickel
Phosphor Bronze
Mild Steel
Tool Steel
Stainless Steel 302
Stainless Steel 347
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
Cygnus 1 Ex Operating Manual
4330
4700
4700 - 5000
5920
4600
5700
2150
5400
5630
3530
5920
5870
5660
5790
5664
5715
5750
3320
6100 - 6230
6660
/ V
COPPER STEEL
[ where: f = V
0.1705
0.1850
0.1850 – 0.1969
0.2331
0.1811
0.2244
0.0846
0.2126
0.2217
0.1390
0.2331
0.2311
0.2228
0.2279
0.2229
0.2250
0.1163
0.1307
0.2402 – 0.2453
0.2622
/ V
COPPER STEEL
Page 86 of 91
0.731
0.794
0.794 – 0.845
1.000
0.777
0.963
0.363
0.912
0.951
0.596
1.000
0.992
0.956
0.978
0.956
0.965
0.971
0.561
1.030 – 1.052
1.125
]