YUSHI YUT-2620 Manual page 34

1. Calibrate the instrument first. Check "Straight beam probe zero calibration" for details.
twice to enter into probe type submenu, then choose "Nor pro" (straight beam probe).
2. Press
Adjust the probe frequency in the "Pro fre" submenu, and set the size of the probe connected in "Pro
dia" (probe diameter) submenu.
for three times to enter into "AVG mode" submenu, and choose "Bottom".
3. Press
4. Couple the probe to the reference block( the thickness is 220mm and the probe diameter isφ5)
completely and adjust gate A start to lock the highest bottom echo.
5. Choose sensitivity submenu in AVG menu, and set the relative value. Press Ok, and the instrument
sets the gain automatically according to theφvalue of sensitivity.
6. Choose AVG curve submenu in AVG menu to set theφvalue of AVG curve, then press Ok. The
instrument makes AVG curve automatically.
After making AVG curve, all the parameters except for velocity can be adjusted. The AVG curve
will then change according to the parameters, and the detecting result will not be influenced.
B. Hole mode
1. Calibrate the instrument first. Check "Straight beam probe zero calibration" for details.
twice to enter into probe type submenu, then choose "Nor pro" (straight beam probe).
2. Press
Adjust the probe frequency in the "Pro fre" submenu, and set the size of the probe connected in "Pro
dia" (probe diameter) submenu.
for three times to enter into "AVG mode" submenu, and choose "Hole".
3. Press
4. Couple the probe to the reference block( the thickness is 220mm and the probe diameter isφ5)
completely and adjust gate A start to lock the highest flaw echo.
5. Choose aperture submenu in AVG menu, and set the relative value. It isφ5 in this case.
6. Choose AVG curve submenu in AVG menu to set theφvalue of AVG curve, then press Ok. The
instrument makes AVG curve automatically.
Note: when detecting with "Bottom" mode, gate A should lock the highest bottom echo and the
height of the echo should be 20% ~90% of the full screen. Set the sensitivity first, then press Ok. And
then setφvalue of AVG curve.
YUSHI INSTRUMENTS
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