MsSR-2020D uses a notebook to 
observe the waveforms. 
With MsSR-2020D, clean signal is 
acquired to detect 2 ~ 3% corrosion 
of the cross  section. 

 
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Detected signals from a 4.5-in. (114.3-mm)-OD, schedule 80, 
steel sample when the pipe was filled with air.
 
 
And filled with water. 
 
The configuration fo the pipe sample is shown in.