VISUAL MONITORING OF REMOTE WELDING OPERATIONS

Regionalised filtration provides a more uniform closed circuit television (CCTV) monitor image of the welding arc, the weld pool and the adjacent area. This provides substantially more real-time information to the welding operator and aids in making the needed adjustment while the weld is in progress. The advancements in video camera technology, along with virtually all other aspects of electronic technology, have been phenomenal. Recent video camera developments have helped revolutionise methods for viewing the weld pool. In addition to improvements made in cameras and electronics, several means of light attenuation have evolved and are often used in a variety of combinations. Each approach has advantages and disadvantages and always represents a compromise.