EM1401 / EM1401 UT EMA Thickness Gauge. Operation Manual.
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In the opened window, press the
,
,
, and
buttons to specify
the known thickness value; then press the
button
.
Speed. This item enables to specify the acoustic speed.
The acoustic speed setting window is shown below:
Acoustic speed setting
In this window, press the
,
,
, and
buttons to specify the
known acoustic speed value; then press the
button
.
WARNING!
All EMA transducers intended for this Device use transverse ultrasonic wave. The
typical speed of the transverse wave for the steel is 3250 m/s.
All PE transducers intended for this Device use longitudinal ultrasonic wave. The
typical speed of the longitudinal wave for the steel is 5950 m/s.
Temperature
The acoustic speed depends on the material temperature. Therefore, different
acoustic speed shall be used for different temperatures. The Device can automatically
correct the acoustic speed depending on the test object temperature. To use this feature,
