Dakota Ultrasonics DFX-7 plus MANUAL1 - Manual (Page 19)

DFX-7 Ultrasonic Flaw Detector
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PROBE FREQUENCY: Used to set the center frequency of the probe/transducer.
The frequency will either be scribed on the probe itself, and additionally listed on the
transducer certificate. Refer to page 75 for further info.
CURVE SIZE (ERS): Used to select the Effective Reflector Size that will be used
from the DGS/AVG chart. Refer to page 75 for further info.
ATTENUATION: Toggles the ATTENUATION on/off. The parameters in the sub
menu are used to compensate for additional factors that affect the propagation of
sound energy, based on the material, surface condition, and differences between the
reference standards versus test material. Refer to page 76 for further info.
DVK: Used to correct for increases in gain based on a curved reference
standard, to an actual back wall reflector. Refer to page 76 for further info.
MATERIAL LOSS: Used to correct for the loss of sound in attenuative
materials and applications inspections where sound will travel long distances.
Refer to page 76 for further info.
REFERENCE LOSS: Used to compensate for the loss of sound in the
reference standard. Refer to page 76 for further info.
TRANSFER LOSS: Used to correct for the loss of sound based on the
surface of the actual test material. Refer to page 76 for further info.
DELAY VELOCITY: Used to set the longitudinal velocity of the transducer delay line,
for both angle & straight beam probes, to account for the proportion of the near field
length in the delay line. Refer to page 75 for further info.
REFERENCE TYPE: This option is used to set the type of reflector that will be used
during the setup and calibration process. The options are Back Wall, Side Drilled
Hole (SDH), or Flat Bottom Hole (FBH). Refer to page 75 for further info.
REFERENCE SIZE: If the reference type was set to SDH or FBH, the size of the
reflector must be entered. Refer to page 75 for further info.
3.13 SETUP – Menu
OPEN: Displays a list of factory and user defined setups currently stored in memory.
These setups can be recalled and used at any time. Refer to page 135 for further
info.
SAVE: Provides the user with the ability to save a custom setup that has been
modified or created by the user. Refer to page 137 for further info.
DELETE: Provides the user with the ability to delete specific setups previously save
in memory. Refer to page 140 for further info.