
Contents
Krautkrämer USM 100 Rev. - (09/2021) 9
1Introduction
1.1 Safety information . . . . . . . . . . . . . . . . . .20
Battery operation . . . . . . . . . . . . . . . . . . . .21
Battery transport . . . . . . . . . . . . . . . . . . . . .21
Software . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Defects/errors and exceptional stresses. . .22
FCC compliance . . . . . . . . . . . . . . . . . . . . .23
1.2 Important information on ultrasonic test-
ing24
Prerequisites for testing with ultrasonic test
equipment . . . . . . . . . . . . . . . . . . . . . . . . . .24
Operator training. . . . . . . . . . . . . . . . . . . . .24
Technical test requirements . . . . . . . . . . . .25
Limits of testing. . . . . . . . . . . . . . . . . . . . . .25
Ultrasonic wall thickness measurement . . .26
Effect of the test object material . . . . . . . . .26
Effect of temperature variations . . . . . . . . .27
Measurement of remaining wall thickness .27
Ultrasonic evaluation of flaws . . . . . . . . . . .27
Flaw boundary method . . . . . . . . . . . . . . . .27
Echo display comparison method . . . . . . . .28
1.3 The Krautkrämer USM 100 . . . . . . . . . . . .29
USM 100 Standard . . . . . . . . . . . . . . . . . . .30
USM 100 Pro . . . . . . . . . . . . . . . . . . . . . . .31
USM 100 Digital . . . . . . . . . . . . . . . . . . . . .32
1.4 How to use this manual . . . . . . . . . . . . . .33
General . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Attention and note symbols. . . . . . . . . . . . .33
2Standard package and accessories
2.1 Standard packages. . . . . . . . . . . . . . . . . .36
2.2 Accessories. . . . . . . . . . . . . . . . . . . . . . . .37
3Initial start-up
3.1 Instrument positioning . . . . . . . . . . . . . . .44
3.2 Power supply. . . . . . . . . . . . . . . . . . . . . . .44
Operation with power adapter. . . . . . . . . . .44
Using the batteries . . . . . . . . . . . . . . . . . . .46
Charging the batteries. . . . . . . . . . . . . . . . .50