5  Operation Preparing for measurements
5-20 Edition 4 (05/2014) DMS Go+
5.5 Preparing for measurements
You can use the DMS Go+ to measure wall thicknesses 
or distances and to assess residual wall thicknesses in 
a simple way. The measured value is displayed directly. 
Depending on the task definition, you can apply one of 
the following measuring methods:
● Measurement of residual wall thickness up to the first 
echo with dual-element probes, for example in the 
event of corrosion.
● Measurement of a multi-echo sequence with good 
surfaces on both sides of the test object.
● Wall thickness measurement through coating by 
evaluating the multi-echo sequence (DUAL-MULTI).
● Simultaneous measurement of wall thickness and 
coating thickness with single echo (TopCOAT, only 
with DMS Go+ TC).
● Wall thickness and residual wall thickness measure-
ment with a simultaneous determination of the cur-
rent sound velocity (Auto-V, only with DMS Go+ TC).
The functions TopCOAT and Auto-V are de-
scribed in chapter 7 of this manual.
To prepare for measurements, you have to:
● Select a suitable probe.
● Select the suitable measurement mode.
● Calibrate the A-scan display.
● Calibrate the instrument for the selected probe and 
measurement mode.
– Connect a suitable probe (see Section Connecting a 
probe, page 3-9).
– Power the instrument on (see Section Starting the 
DMS Go+, page 3-11).
The further steps are described in detail in the following.