Dakota Ultrasonics MINI--MAX - Manual (Page 56)

Dakota Ultrasonics
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4) Press the MEAS key to return to the measurement screen to begin
measuring reference lengths.
Now that a group has been created to store our probe zero data, the material
type of the standard probe zero bolt must be selected. This will load the
appropriate values for velocity and the temperature coefficient into memory.
Selecting the Bolt Material Type
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 MATL menu is highlighted and displaying the submenu
items.
2) Use the UP and DOWN arrow keys to scroll through the sub menu items
until TYPE is highlighted.
3) Press the ENTER key to display the list of material types.