Leeb 521 Nondestructive Ultrasonic Flaw Detection – Doryang

Overview:

This instrument is a portable, digital ultrasonic flaw detector that enables fast, convenient, non-destructive, and accurate detection, positioning, evaluation, and diagnosis of various internal defects (such as cracks, inclusions, and pores) in workpieces. It is suitable for both laboratory and on-site engineering applications. The device is widely used in industries requiring defect detection and quality control, such as manufacturing, steel metallurgy, metal processing, and chemical industries. It is also extensively applied in aerospace, railway transportation, and boiler pressure vessel inspections for in-service testing and lifespan evaluation.

Main Functions:

• Bilingual display (Chinese & English) with a master-slave menu system, quick-access keys, and a digital rotary encoder for easy operation.
• Full-digital true color LCD display, allowing selection of background and waveform colors based on the environment, with adjustable brightness.
• Compact and lightweight, allowing one-handed operation and built for long-term durability.

Key Features:

• Automatically generates DAC and AVG curves using standard test blocks, with unlimited sampling points and correction capabilities.
• Automatically displays echo-related parameters (Depth D, Horizontal P, Distance S, Amplitude H).
• Switch freely between three measurement scales (Depth D, Horizontal P, Distance S).
• 100 independent flaw detection channels, allowing free input and storage of inspection standards for any industry (expandable).
• Stores 300 A-scan images and parameters, with expansion options available as per user needs.
• Automatic defect equivalent φ-value calculation and peak memory function.
• Supports two detection modes: Peak and Edge.
• Supports three probe types: Single crystal, Dual crystal, and Through transmission.
• Automatic damping matching for intelligent flaw detection and gate alarm function.
• Allows users to create customized flaw detection processes based on actual workpieces, eliminating the need for carrying test blocks during on-site inspections.

Product Features:

• Lithium battery-powered, providing 8 hours of continuous operation.
• Durable, waterproof, and dustproof, with strong anti-interference capabilities.
• Large high-brightness display, ensuring clear visibility even in sunlight and tunnels.
• Triple protection (waterproof, oil-proof, and dustproof), extending its lifespan several times longer than conventional flaw detectors.