Face Extrusion Measurement System
L-Scan
This system is a simplified face displacement measurement system that uses laser distance meters to measure and monitor relative displacement from initial measurements at the tunnel face. The field PC controls up to eight laser distance meters to measure face displacement in real time. If displacement exceeds the management threshold, a rotating warning light is activated and an alert email is sent.
Overview Diagram
System Configuration
Management Software
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![PC Screen for Underground Measurement]()
PC Screen for Underground Measurement
Specifications
| Measurement Range (no target) | 0.05 m to Approx. 50 m (may be shorter due to target color, water seepage, etc.) |
|---|---|
| Measurement Accuracy | ±1 mm (2σ) |
| Resolution | 0.1 mm |
| Measurement Speed | 0.1 to 4 s (varies with object color, water seepage, and distance) |
| Operating Temperature Range | -10 ℃ to 50 ℃ |
| Weight | Approx. 200 g |
| Dimensions | 46 (W) × 116 (D) × 28 (H) mm |
