Dakota Ultrasonics PX-7 User Manual
Page 8
Dakota Ultrasonics
4
The CAL key is used to enter and exit the PX-7's calibration mode.
This mode is used to adjust the sound-velocity value that the PX-7 will use
when calculating thickness. The tool will either calculate the sound-velocity
from a sample of the material being measured, or allow a known velocity
value to be entered directly. Refer to page 14 for an explanation of the two
CAL functions available.
The IN/MM key is used to switch back and forth between English and
metric units. This key may be used at any time, whether the tool is
displaying a thickness (IN or MM) or a velocity value (IN/
µs or M/s).
The UP arrow key has two functions. When the PX-7 is in calibration
mode, this key is used to increase numeric values on the display. An auto-
repeat function is built in, so that when the key is held down, numeric
values will increment at an increasing rate. When the PX-7 is in
measurement mode, this key is used to select b etween three different
modes of measurement ( echo -echo, interface-echo, or auto ). Refer to
page 14 for an explanation of the calibration procedure and page 13 to
review the various measurement modes.