Elcometer 266 Manual Del Usuario página 42

APPENDIX B: CALCULATING THE CORRECT TEST VOLTAGE (cont)
TABLE 1: kV values from ASTM G62-87 (up to 1 mm)
Microns
100
200
300
400
500
600
700
800
900
1000
TABLE 2: kV values from ASTM G62-87 (above 1 mm)
mm
1
2
3
4
5
6
7
mm
0.20 to 0.28
0.30 to 0.38
0.40 to 0.50
0.53 to 1.00
1.01 to 1.39
1.42 to 2.00
2.06 to 3.18
3.20 to 3.43
en-41
R
Kilovolts (kV)
1.04
1.47
1.80
2.08
2.33
2.55
2.76
2.95
3.12
3.29
Kilovolts (kV)
7.84
11.09
13.58
15.69
17.54
19.21
20.75
TABLE 3: kV values from NACE RP0188-99
Thou/Mils
5
10
15
20
25
30
35
40
-
-
Thou/Mils
40
80
120
160
200
240
280
Thou/Mils
8 – 11
12 – 15
16 – 20
21 – 40
41 – 55
56 – 80
81 – 125
126 – 135
Kilovolts (kV)
1.17
1.66
2.03
2.34
2.63
2.88
3.11
3.32
-
-
Kilovolts (kV)
7.91
11.18
13.69
15.81
17.68
19.36
20.92
Kilovolts (kV)
1.5
2.0
2.5
3.0
4.0
6.0
10.0
15.0
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