Page 12
PocketMIKE Operating Manual
3.3 Velocity Calibration
The user can directly specify the acoustic velocity of the material
being tested. To launch velocity calibration mode, press anytime
the instrument’s display shows
. The instrument displays the
currently set acoustic velocity (in units of inches-per-microsecond or
meters-per-second depending on units-of-measurement settings).
Note that throughout the velocity calibration process,
appears
(and flashes) along the display’s upper edge. Figure 3-2 illustrates the
displayed parameters and key presses required to navigate through the
velocity calibration process.
NOTE:
A thickness standard is not required to perform a velocity cali-
bration. However, following a velocity calibration the instrument’s ac-
curacy should be checked using a sample of known thickness and with a
sound velocity that matches the user-inputted value. A table of approxi-
mate sound velocities for various materials can be found in Chapter 9.
FIGURE 3-2—Velocity Calibration Procedure
Page 12
PocketMIKE Operating Manual
3.3 Velocity Calibration
The user can directly specify the acoustic velocity of the material
being tested. To launch velocity calibration mode, press anytime
the instrument’s display shows
. The instrument displays the
currently set acoustic velocity (in units of inches-per-microsecond or
meters-per-second depending on units-of-measurement settings).
Note that throughout the velocity calibration process,
appears
(and flashes) along the display’s upper edge. Figure 3-2 illustrates the
displayed parameters and key presses required to navigate through the
velocity calibration process.
NOTE:
A thickness standard is not required to perform a velocity cali-
bration. However, following a velocity calibration the instrument’s ac-
curacy should be checked using a sample of known thickness and with a
sound velocity that matches the user-inputted value. A table of approxi-
mate sound velocities for various materials can be found in Chapter 9.
FIGURE 3-2—Velocity Calibration Procedure
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