Cygnus DIVE Operating Manual
M3-DIVE-M-ENG_Iss9.docx
Page 20 of 117
Twin Element Probes
Twin Element probes can be used to take thickness measurements
on both
Coated
and
Un-Coated
metals.
When measuring on Uncoated surfaces
Single Echo
mode can be
used. Single Echo mode will also work best when measuring Heavy
Corrosion
–
heavy corrosion will absorb and scatter the ultrasound
signal so there is often only enough ultrasound reflected back to
the probe to provide a single echo.
Identifying Single or Twin Element Probes
You can easily identify each type of probe by looking at the probe
face;
The Twin Element probe has two
visible sections and NO
protective membrane
The Single Element probe has a
single black face with a
protective membrane
Single
Crystal
Probe
Twin
Crystal
Probe
