Ultrasonic Flaw Detector DFD30
14
Thru:
Two separate transducers, typically on opposite sides of the test specimen. Use the top
transducer connector as the transmitter. The bottom transducer connector is designated as the
receiver.
Under PULS, press up or down key to choose PROBE TYPE, press + or – key to make change.
Notice
: Probe setting plays an important role in flaw detecting. Please choose right probe according to the setting.
5.3.2 REJECT
This menu is used to reject the echo’s display amplitude, for example, to remove the structural noise in the job. It is to
reject the display of echo whose amplitude is lower than the setting value by setting a percentage (i.e. percentage at
full amplitude).
The suppressing percentage (i.e. percentage at full amplitude) indicates the min. echo height to be displayed. Any
echo amplitude lower than this height will be neglected and recorded as zero amplitude.
Parameter range:
0%~90%
Step graduation:
1%
Under PULS, press up or down key to choose REJECT, press + or – key to make change.
5.3.3 PRF
This model is equipped with an adjustable pulse repetition reate, with adjustable settings of 10, 25, 50, 100, 250, 500,
750 and 1000Hz.The primary purpose is to control how fast the pulser is firing. The repetition rate is tied into the
alarm LEDS. Therefore, when scanning at higher speed, a higher repetition rate will make the alarm trigger more
responsive.
Under PULS, press up or down key to choose PRF press + or – key to make change.
5.3.4 FINE G
This menu is to adjust the gain in fine status.
Under PULS, press up or down key to choose PRF press + or – key to make change.
5.3.5 T-SCAN
This menu is multipurpose for SCAN WAY.
5.4 Setting of CAL
Under A-Scan mode, press left or right direction key to set
CAL
.
