1-12 Issue 05, 01/01 Krautkramer DM4E / DM4 / DM4 DL
Couplant rests
To ensure correct probe zero adjustment remove any
remaining couplant before carrying out a further mea-
surement.
Measurement precision
Be aware that the measurement precision is not identi-
cal with the display resolution.
Measurement precision depends on several factors
such as:
• temperature
• probe delay line
• constancy of material velocity
• surface continuity of the test object
Probes
Please note that only the probes specified in chapter 2
Scope of supply and accessories are admitted for the
DM4. These probes are recognized by the DM4 and
the corresponding probe type number is displayed
after probe zero. Only the following probe type num-
bers are specified for the actual DM4 version:
• 2 for HT 400
• 3 for DA 301, DA 305, DA 311, DA 401, DA 411
• 4 for DA 303, DA 315, DA 403
• 5 for DA 312, DA 312 B16, DA 319, DA 412
• 7 for DA 0.8G, DA 408
Introduction Important notes on thickness testing with the DM4
1-12 Issue 05, 01/01 Krautkramer DM4E / DM4 / DM4 DL
Couplant rests
To ensure correct probe zero adjustment remove any
remaining couplant before carrying out a further mea-
surement.
Measurement precision
Be aware that the measurement precision is not identi-
cal with the display resolution.
Measurement precision depends on several factors
such as:
• temperature
• probe delay line
• constancy of material velocity
• surface continuity of the test object
Probes
Please note that only the probes specified in chapter 2
Scope of supply and accessories are admitted for the
DM4. These probes are recognized by the DM4 and
the corresponding probe type number is displayed
after probe zero. Only the following probe type num-
bers are specified for the actual DM4 version:
• 2 for HT 400
• 3 for DA 301, DA 305, DA 311, DA 401, DA 411
• 4 for DA 303, DA 315, DA 403
• 5 for DA 312, DA 312 B16, DA 319, DA 412
• 7 for DA 0.8G, DA 408
Introduction Important notes on thickness testing with the DM4
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