YUSHI INSTRUMENTS
13
3.4.1.4 Mode of Gate A
Select Gate A menu, press
(up) or
(down) to select the mode of Gate A submenu, then
press
(left) or
(right) to adjust the values.
Off
Turning off the gate, i.e., turning off the alarming and measurement functions.
Positive
Afferent Echo Alarm. In the coverage of Gate A, if the echo exceeds the preset gate
height, and the alarm is "on", the alarm will sound.
Negative
Echo Loss Alarm. In the coverage of Gate A, if the echo is lower than the preset gate
height, and the alarm is "on", the alarm will sound.
3.4.1.5 Display Choice
Select Gate A menu, press
(up) or
(down) to select the display choice submenu, then
press
(left) or
(right) to adjust the values.
Note: when the function is off, the screen is closed. The other data is shown at the top right corner
of the screen.
Display
Meaning
Display
Meaning
Sa
The sound path value of the echo in Gate
A
Ha
The height of the echo in Gate A
Sb
The sound path value of the echo in Gate
B
Hb
The height of the echo in Gate B
ba
The path difference of the echoes in Gate
A and B
Da
The vertical distance from the surface
of the work piece to the flaw echo in
Gate A
Ra
The projection distance from the probe
front edge to the flaw echo in Gate A.
Db
The vertical distance from the surface
of the work piece to the flaw echo in
Gate B
Rb
The projection distance from the probe
front edge to the flaw echo in Gate B
dBa
The dB difference from the echopeak
in Gate A to the gate level position
off
Close display
dBb
The dB difference from the echopeak
in Gate B to the gate level position
3.4.2 Gate B Menu
3.4.2.1 Starting of Gate B
Press
for even times to select the Gate B menu, then press
(up) or
(down) to
select the starting of Gate B submenu. Then press
(left) or
(right) to adjust the values.
Note: the starting of Gate B is the forward position of Gate B. The adjustment range: 0-9998mm.
When you adjust the values, you can press Ok to adjust the steps which are divided into 1, 5, and 10.