ScanTech Instruments provides design, manufacture, and integration of general and application specific Inspection systems. This includes instrumentation, data acquisition, imaging, signal processing, and motion systems. Motion systems include manual, closed-loop automated, and open loop joystick controlled systems. Mechanics vary from gantry-type units to remote vehicles and scanners. An example of a typical system is shown below: PORTAGAN SYSTEM The Portagan System is a small, portable, four-axis gantry ultrasonic scanning system that was designed to implement a number of different scanning scenarios on sub-sea valve components. The assembly is rigid and accurate, yet light and portable enough to allow the scanner to be set onto or over a part in a variety of different positions. The system eliminated the need for a very heavy and expensive turntable and immersion tank system that is normally required for bore-side scanning. The size, weight, and asymmetry of these parts made handling and manipulation difficult in a traditional setup. In the case of bore-side scanning, the part is now filled with water for coupling and the Portagan scanner is magnetically attached to a flange on the part. The X- and Y-axis of the scanner are used to center the probe, then the Z- and -axis are used to scan the bore surface. Another difficult area to scan on the valves is the base of bores that do not pass completely through the part. In this case, The X- and Y-axis are used to scan the flat circular area using a raster-scan pattern. External faces and flat areas are also scanned with the X- and Y-axis. A remote pendant can be used for manual jogging of the probe. The Ultrasonic and data acquisition system is computer-based. An ultrasonic flaw detector is used for the pulser / receiver portion of the system. This allows real-time viewing of the A-scan without constraining the computer by the limitations of this time-intensive task. A high-speed Analog to Digital converter on the PC bus is used to digitize the signal for storage and analysis, as well as perform gating and amplitude measurement. The data can be stored and/or displayed in an A-, B-, or C-scan format. Post-processing of the data can also be performed. A PC bus based motion controller is used for control of the four-axis scanner. The software allows set-up and control of the scanner using a user-controlled scan-plan interface. All software is Windows compatible for ease of use and flexibility. The large color TFT flat screen and keyboard slide-in drawers are rack-mounted in a welded construction standard 19 inch cabinet, as well as the industrial Pentium II PC , all power supplies, and motor drivers. All motors are DC servo, and the motor drivers are linear-type to reduce noise interference with the ultrasonics
Manual 3-axis immersion system