Epson USN 52L - Manual (Page 79)

5-34 Issue 05, 02/00 Krautkramer USN 52R/USN 52L
5.7 Measuring thickness
USN 52R/USN 52L enable you to measure thickness
and distance in a simple way. The measured value is
directly displayed. One of the following two methods of
measurement is used, depending on the application:
• Measurement to the first echo – e.g. corrosion
measurement with a dual (T/R) probe
• Measurement of the multi-echo sequence with a
single- element probe on a test object which has a
good surface on both sides
Preparations
– Select probe
– Set MEASURE (refer to previous section)
– Select TOF (refer to Page 5-9)
– Calibrate A-scan display
– Calibrate the USN 52 R for the selected probe and
the measurement mode (refer to previous section)
Measuring the thickness
– Clean the surface of the test object from dirt and any
loose particles
– Apply couplant to the surface of the test object
– Using slight and even pressure, couple the probe
– Observe A-scan display and S=...”-value until the
measured value display is stable
– Maximize the echo amplitude
– Read measured value
H Note:
If you are operating with MULTECHO in MEASURE,
observe Gate b in order to evaluate the correct echo.
You can store the displayed measurement values in the
Data Logger or transfer them into another instrument
via the RS232 interface.
Operation Measuring thickness
5-34 Issue 05, 02/00 Krautkramer USN 52R/USN 52L
5.7 Measuring thickness
USN 52R/USN 52L enable you to measure thickness
and distance in a simple way. The measured value is
directly displayed. One of the following two methods of
measurement is used, depending on the application:
• Measurement to the first echo – e.g. corrosion
measurement with a dual (T/R) probe
• Measurement of the multi-echo sequence with a
single- element probe on a test object which has a
good surface on both sides
Preparations
– Select probe
– Set MEASURE (refer to previous section)
– Select TOF (refer to Page 5-9)
– Calibrate A-scan display
– Calibrate the USN 52 R for the selected probe and
the measurement mode (refer to previous section)
Measuring the thickness
– Clean the surface of the test object from dirt and any
loose particles
– Apply couplant to the surface of the test object
– Using slight and even pressure, couple the probe
– Observe A-scan display and S=...”-value until the
measured value display is stable
– Maximize the echo amplitude
– Read measured value
H Note:
If you are operating with MULTECHO in MEASURE,
observe Gate b in order to evaluate the correct echo.
You can store the displayed measurement values in the
Data Logger or transfer them into another instrument
via the RS232 interface.
Operation
Measuring thickness