Basics - GE DMS Go+ Operating Manual

7 Special functions of the DMS Go+ TC

7.1 Basics

The DMS Go+ TC has two special functions that enable
improved methods of measurement in connection with a
special 4-element probe, especially in residual wall
thickness measurements through coatings:
● Auto-V
● TopCOAT
Both functions are based on measurements using the
4-element probe, mathematically evaluated by the in-
strument.
The 4-element probe has 2 transmitter/receiver pairs
which are arranged at a different distance from the cou-
pling face of the probe each.
While the first pair of elements (close to the coupling
face) is used for acquiring basic data (e.g. sound veloc-
ity in the test object), the second pair of elements (lying
deeper in the probe) is used for determining the wall
thickness of the test object.
7-2
N o t e
Only the echoes of the second pair of trans-
ducer elements are visible in the A-scan.
Probe
1st pair of elements
After calibrating the DMS Go+ TC to the connected
probe, the basic data of the probe are stored in the in-
strument.
Edition 4 (05/2014)
Basics
2nd pair of elements
DMS Go+