Model 350M Rotary

Eddy Current Rotary Mechanism to Detect Seam Type Defects in Tube and Bar

MAC Rotaries use the unique qualities of eddy current rotary probe technology to detect long continuous surface flaws which may not be detected by encircling test coils.

  • Operate with MultiMac® eddy current electronics.
  • Systems with two, four, or six probes, each with its own detector channel.
  • Accurate Distance Compensation ensures a uniform defect signal, even with off center or out of round material.
  • Choose test headplates for surface or air ride configurations, depending on surface conditions, sizes, and test specifications.
  • Dynamic breaking for quick stop of test probe headplate rotation.
  • Rotary probes, unlike encircling test coils, are not affected by throughput speed changes such as occur in parts forming, because the probes spin continually around the test material at a fixed speed.
  • Operates automatically as defects in the bar or wire create flaw signals, activate alarms, paint markers and other devices.
  • Test magnetic and nonmagnetic material from 1/8″ (3mm) to 7.1″ (180mm) diameter.
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Model 350 Rotary

MAC’s® Eddy Current Testing (ECT) systems incorporate computer-based test instruments and test coils that use two ECT coil technologies: encircling and sector coils, and spinning or rotary probe coils.

  • Encircling and sector Eddy Current coil tests perform in this manner:
  • The product is passed through or adjacent to an electrical test coil, which has been excited by an alternating current.
  • This induces a flow of eddy currents around the test material or in the case of a sector coil, in the area under the coil.
  • Short, intermittent anomalies or flaws cause a variation in the eddy current pattern, which the instrument detects.

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