HMG Series Digital Crack Depth Gauge - 100mm Range, 0.1mm Resolution for Non-Destructive Testing
Professional non-destructive testing equipment for precise crack depth measurement in industrial applications.
Regular inspection of equipment parts with cracks enables monitoring of crack development status, determining optimal repair or replacement timing to ensure system safety and cost-effectiveness.
For workpieces with cracks during processing, measurement results help formulate repair strategies according to manufacturing process standards and requirements.

| Model Type | Dimensions | Weight |
|---|---|---|
| Handheld Model | 180 x 100 x 43 mm | Less than 1 kg (including built-in rechargeable battery) |
| Portable Model | 67 x 148 x 190 mm | |
| Standard Probe | φ19 x 130 mm, replaceable gold-plated probe | |
- Lightweight portable design similar to digital multimeters
- Non-destructive testing with high measurement data reliability
- Strong environmental interference resistance capability
- Automatic zero correction function for accurate readings
- Long continuous working time with DC power supply
- Simple operation with intuitive digital display
| Parameter | Specification |
|---|---|
| Application Scope | Surface crack depth measurement of conductive materials |
| Working Principle | AC potential method combined with computer technology |
| Power Source | Built-in rechargeable NiMH battery |
| Working Time | Continuous use for 12 hours |
| Measuring Range | Ferromagnetic material: 0-100 mm |
| Measurement Accuracy | Relative error ≤10% at full range |
| Resolution | ≥0.1 mm |
- Capable of measuring very short cracks with precision
- Adapts to surfaces with small radius of curvature
- Standard and custom probe options available
Cross the probe on both sides of the crack perpendicular to the measured surface, press down the probe, and read measurement data directly on the LCD display.
- Standard probes: Single-column and double-column types
- Special probes: Customizable for specific engineering applications and test object requirements
Widely used in machinery manufacturing, petrochemical, aerospace, nuclear power, and other industrial fields for non-destructive testing. Available in standard models for conventional measurement and customized models for special conditions, providing technical support for challenging engineering measurement problems.
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