Dakota Ultrasonics
56
the job. For example, if the measurement range was .080” (2.03mm) to .250”
(6.35mm), the user would perform a one point calibration on a known thickness
sample close to .250” (6.35mm), followed by a two point calibration close to .080”
(2.03mm). When a two point calibration is performed, the
DFX-7
calculates the zero
and the velocity. The following steps outline this procedure:
Two Point Calibration
1) Physically measure an exact sample of the material or a location directly on
the material to be measured using a set of calipers or a digital micrometer.
2) Apply a drop of couplant on the transducer and place the transducer in
steady contact with the sample or actual test material. Be sure that the
reading is stable and the repeatability indicator, in the top left corner of the
display, is fully lit and stable. 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.
3) Use the
UP
and
DOWN
arrow keys to scroll through the sub menu items
until
MATL 2PT
is highlighted.
Содержание DFX-7
Страница 35: ...Dakota Ultrasonics 34 Note Sets where the detection will occur on the negative or positive going echoes...
Страница 219: ...Dakota Ultrasonics 82 10 Finally press the MEAS key to return to the measurement screen and begin taking readings...
Страница 308: ...171 APPENDIX B SETUP LIBRARY Num Name Comment 1 Gn AGC Velocity 1 Enter Custom Name 2 3 4 5 6...
