ISONIC utPod from Sonotron NDT - Operating Manual – Revision 1.18 - Page 37 of 94
5.7.3. DGS
To create
DGS
connect
ISONIC
utPod
to PC via USB port.
ISONIC
utPod for PC
software should be
preinstalled in the computer (refer to
chapter 8 of the operating manual)
In the submenu DAC generated on the
computer screen by
ISONIC utPod
for PC
software click on
Select
Probe
and
Equivalent Dia
(diameter of the disk shaped reflector
– flat bottom hole, FBH). Then enter
values of
Transfer Loss
, and
Attenuation
factors for the reference
block and material: two lines appear
on
A-Scan
:
blue line represents dependence
of the back echo amplitude on the
metal travel distance
white line represents dependence
of the FBH echo amplitude on the
metal travel distance
One of two reference blocks may be
used to setup
DGS
:
back echo block inclined
according to the probe angle
(incidence angle)
standard block either
K1
(
IIW-1
)or
K2
(
IIW-2
); the type of reference
block and reflector are defined in
the probe data sheet and
reproduced automatically from the
DGS
data base upon probe
selection
Place probe onto the reference block,
obtain echo from the reference
reflector and maximize it if applicable
(
K1
or
K2
block). Then calibrate
Gain
bringing reference echo amplitude to
the blue line level then click on the
button indicating the reference block
under use