DFX-7
Ultrasonic Flaw Detector
41
Setting Polarity
1) Use the
UP
and
DOWN
arrow keys to scroll through the sub menu items
until
POLARITY1
is highlighted.
2) Press the
LEFT
and
RIGHT
arrow keys to toggle the polarity
POSITIVE
.
3) Press the
MEAS
key to return to the measurement screen and get started
with the two point calibration.
5.2 Straight Beam Calibration
Now that the
DFX-7
is setup with a valid range and a gate enabled, we’re ready to
perform a two point, calibration using a single element contact style transducer, as
follows:
Two Point Calibration – Straight Beam
Note:
Calibration standards representing the minimum and maximum
thickness of the overall inspection range intended are required. They must also
be of the same material type as the intended application. For our example,
we’ll be using a 1 and 4 inch standard for calibration.
