| Magnetic Analysis Corp., USA, a leader in the development and production of non-destructive testing equipment for metal products, has recently introduced Varimac V, an eddy-current comparator that provides fast and accurate testing of metal parts, bar, wire and tubing for variations in physical characteristics such as alloy, hardness, case depth and heat treatment. The system�s simple set-up only requires its electronics, a test coil, a balance coil, a sample of the part or product to be tested and a monitor. After set-up, the Varimac V runs automatically. Testing can be observed conveniently on a remote monitor in another location.
The new system features high sensitivity and resolution, as well as selective circuits to optimise differentiation between signals for wanted and unwanted conditions. A new broader frequency range (100Hz to 2MHz) enhances selectivity, while a 20GB hard-drive can handle all the data storage needed for set-ups and reporting. The Varimac V can be used with the company�s parts gate systems to sort parts at speeds up to six parts per second into �acceptable�, �below specification� and �above specification� tracks. This is especially useful for testing parts such as fasteners, bearings and other cold-formed pieces. The Varimac can also be operated in conjunction with other parts handling systems. The system�s high-speed, continuous operation and reliability in production environments make 100% inspection of parts economically feasible. In addition to parts testing, the Varimac V is also frequently used on-line to verify alloy, grade and hardness in bar, wire and tubing, and to identify accidentally mixed grades.
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