Product Name: TMTECK TC-200 Crack Detector Short Description: Detects and measures surface cracks in steel and other materials, even under thick protective coatings, making it an ideal choice for various industrial applications. Inspect: This device is used in a wide range of applications, including: Bridges, buildings, and other structural inspections Amusement park rides Mining and earth-moving equipment Cranes and other lifting equipment Ships, tanks, and military hardware Pipelines, pressure vessels, and oil field equipment Signal light masts, and more Key Features: Detects cracks under thick coatings without needing to remove them Simple to use with minimal training required Indicates crack severity (depth) and accurately finds the crack tip Economical and fast, scanning a foot of weld in just 10 seconds Minimizes the need for dye penetrant and magnetic particle inspection Cost-effective compared to eddy current and ACFM instruments Lightweight (0.6 lb. or 300 gr.) and no consumables needed 14-hour battery life and a water-resistant case (IP-65) Setup Instructions: Place a plastic shim of similar thickness to your coating on the test block. Position the probe over a defect-free area and press the "balance" button. Rotate the probe so that the finger grip is parallel to the notch. Scan the probe over the appropriate notch in the test block and adjust the sensitivity buttons as needed. Operation Guidelines: Plate and Pipe: Scan the area of interest in a zigzag pattern, repeat at 90 degrees. Welds: Place the probe over the Heat Affected Zone (HAZ) adjacent to the weld and scan the length of the weld. Move the probe 1/8 inch (3 mm) and repeat until 1/2 inch (12.5 mm) on either side of the weld is covered. Weld Crown: Scan the weld crown in a zigzag pattern. Use a plastic sheet or tape over rough welds for easier scanning. Theory of Operation: The probe features a transmitter and receiver. The transmitter creates a stable AC magnetic field in the test material, which is disrupted by a crack. The receiver, a proprietary semi-conductor magneto-sensitive device, detects and measures the resultant magnetic flux leakage, indicating the presence and severity of a crack. Previous: TMWF series Wet Film Gauge Downloads PDF Specification Sheet -Download Here