Dakota Ultrasonics
52
all of the measurements the gauge makes will be erroneous by some fixed
percentage.
The
One Point
calibration is the simplest and most commonly used calibration
method - optimizing linearity over large ranges. The
Two Point
calibration allows for
greater accuracy over small ranges by calculating the probe zero and velocity. The
DFX-7
provides four simple methods for setting the sound-velocity outlined below:
Known Velocity
If the material velocity is known, the user may wish to simply enter the velocity
number into the
DFX-7
, rather than have the
DFX-7
calculate the velocity value using
a known thickness on a material sample. The steps for entering the velocity are
outlined below:
Using a Known Material Velocity
1) Press the
MENU
key once to activate the menu items tab. Press the
MENU
key multiple times to tab right and the
ESC
key multiple times to tab left until
the
CAL
menu is highlighted and displaying the submenu items.
2) Use the
UP
and
DOWN
arrow keys to scroll through the sub menu items
until
VELOCITY
is highlighted.
