The D2S shell scanner was developed to provide continuous scanning capability while providing Ultrasonic Thickness measurements and velocity. Measurements are recorded every 1/4" along the length of the Dryer Shell while maintaining a scan speed of 4 to 6 inches per second.

"Real Time" viewing of the B-Scan image with simultaneous plotting of the thickness scan on the PC screen affords the technician the opportunity to immediately note any discrepancies or anomalies. These areas can be verified immediately simply by backing the crawler up and re-scanning the area without terminating the scan.

The system encoder is used to ensure the exact location of the recorded measurements at all times and is displayed in feet and inches.

Data is stored directly on the PC, so memory is virtually unlimited and transfer of data is not required.

The system uses a two channel multiplexer which is faster and more reliable solid state unit. The system requires no modification of the Ultrasonic instrument and uses a four (4) point calibration. This calibration compensates for all delays in the wedge and is automated in our software.

The D2S shell scanner is a proven system for the inspection of dryer shells with more data captured in less time than required for other systems. An added feature is the capability of MUSTANG to perform a circumferential scan to verify thinning that has occurred in an isolated area.

The MUSTANG reporting software prints the line scan for the Ultrasonic thickness and Velocity on the same page for each scan taken. All thickness values at or below the assigned minimum value are printed in red with the thinnest recorded measurement for the scan noted in the margin.

An added value is that MUSTANG can display previously acquired data simultaneously with current data.