11-4 Issue 05, 01/01 Krautkramer DM4E / DM4 / DM4 DL
Appendix Application information
tures above 550 °C, the couplant can suddenly ignite.
However, this does not influence the coupling quality
in any way.
Do not couple the probe for more than 5 seconds. If a
thickness reading is not displayed within 5 seconds,
remove the probe and cool it with water. Good cou-
pling can be achieved on curved surfaces by slightly
rocking the probe.
Cool the probe after thickness measurement by im-
mersing the contact face in water for a few seconds.
Do not immerse it any longer than this!
Carefully remove any remaining couplant from the
probe before carrying out any further measurement.
In case of hot test objects and temperature variations,
always use the DM4 in the DA3 mode (please see
page 4-6) as temperature variations are compensated
in this mode thanks to the continuous probe zero ad-
justment even in the coupled state.
There are applications which go beyond the possibili-
ties of the DM4 DL. If high-temperature measure-
ments turn out to be unsatisfactory after several at-
tempts using this method, it is recommended that a
high-temperature probe be used in connection with a
universal ultrasonic instrument.
11-4 Issue 05, 01/01 Krautkramer DM4E / DM4 / DM4 DL
Appendix Application information
tures above 550 °C, the couplant can suddenly ignite.
However, this does not influence the coupling quality
in any way.
Do not couple the probe for more than 5 seconds. If a
thickness reading is not displayed within 5 seconds,
remove the probe and cool it with water. Good cou-
pling can be achieved on curved surfaces by slightly
rocking the probe.
Cool the probe after thickness measurement by im-
mersing the contact face in water for a few seconds.
Do not immerse it any longer than this!
Carefully remove any remaining couplant from the
probe before carrying out any further measurement.
In case of hot test objects and temperature variations,
always use the DM4 in the DA3 mode (please see
page 4-6) as temperature variations are compensated
in this mode thanks to the continuous probe zero ad-
justment even in the coupled state.
There are applications which go beyond the possibili-
ties of the DM4 DL. If high-temperature measure-
ments turn out to be unsatisfactory after several at-
tempts using this method, it is recommended that a
high-temperature probe be used in connection with a
universal ultrasonic instrument.
To Next Page
Loading...
