phase II+ UTG-400, Manual, Page: 12 / 22

BLANK —hide the unnecessary and useless clutter in front of the main waves. The red line on the
bottom of the screen shows the blank confines. The adjusting blank confines are the present range
confines. Incorrect readings can be caused by material issues such as corrosion, internal material
defects or even a specific material such as aluminum. Only adjustments in the Gain can solve part of the
problem.
GATE —lock the echo and show the thickness value of the highest echo. Adjusting the height of the gate.
The gate ranges from 1 to 50mm. Only when the waveform is higher than the gate will this gauge be
able to take the echo and show the value.
Attention : this will only show when the GATE specification is highlighted.
The first intersection point between the waveform and gate is shown with a RED arrow which will help
you determine if this thickness value is correct. If correctly tested, the red arrow should point to the
front of the first bottom echo.
3.6 REAL CASE ANALYSIS
1 . When measuring the thickness, its possible that small gains prevent the precise results. As shown in
the following figure, the thickness of the testing object is about 5mm, but as for the over small gain, the
measuring result is 10.77mm as the first echo has not broken the gate and the gate locates the second
echo automatically. This is obviously an incorrect result, and customer can pull up the echo by
enhancing the gain setting to make the first echo break the gate and finally pinpoint the correct
measurement
.
3.8 REAL CASE 1
3.9. The waveform without blanking 3.10 Omits the front noise by blanking