Surface Crack Detector – TC-200

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.

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