Laser Tiltmeter
A 2-in-1 Laser Distance Meter and 3-axis tiltmeter engineered for non-intrusive convergence monitoring of tunnels, slopes, and infrastructure. Combines optical precision with edge intelligence for sub-millimeter displacement detection.
Laser Tiltmeter
Model: LS-G6-LAS-TIL90
Laser Distance + 3-Axis TiltNon-Intrusive Convergence Monitoring with Laser Precision
The Laser Tiltmeter combines a visible laser distance meter (class II, 650 nm) with a 3-axis MEMS accelerometer in a single rugged enclosure. It provides non-intrusive, remote monitoring of inclinations, movements, and differential settlements of slopes or infrastructure — ideal for tunneling projects where it can be relocated after stabilization.
The device stores up to 100,000 readings including time, distance, and 3-axis tilt measurements. Data is transmitted via LoRa radio communications to the CMT platform for real-time visualization and analysis.
Class II visible laser, 0.1 mm resolution
MEMS accelerometer, ±15° range
Readings with timestamp & sensor data
Quick configuration wizard via Worldsensing App
What Makes the Laser Tiltmeter Different
Purpose-built for non-intrusive convergence monitoring with dual-sensor fusion and long-range wireless connectivity.
Laser Precision
Class II visible laser (650 nm) with 0.1 mm resolution. Accuracy of ±1 mm at 10 m, ±4 mm at 50 m, and ±8 mm at 150 m distance. Repeatability of 0.15 mm for consistent measurements.
Extended Battery Life
Powered by 2 × 3.6V C-size replaceable batteries. Up to 14.3 years of unattended operation at 6-hour reporting interval (20 m distance). User-replaceable without special tools.
IP68 Rated & Rugged
Industrial-grade IP68 enclosure for harsh environments. Operating range from −20°C to +60°C — suitable for tunnel and outdoor deployments.
Dual-Sensor Fusion
Combines laser distance measurement with 3-axis tilt sensing (MEMS accelerometer). Correlates distance and angle data for precise convergence and settlement analysis.
Cloud & Edge Management
Configure locally via CMT Edge for single-network deployments, or connect to CMT Cloud for multi-project, multi-network oversight from anywhere.
Mobile App Configuration
Quick setup wizard via Worldsensing App with Bluetooth connectivity. USB-C connector also available for direct field configuration.
Convergence Monitoring for Every Environment
Explore the range of monitoring solutions enabled by the Laser Tiltmeter across tunneling, structural, and geotechnical applications.
Tunneling
Convergence Monitoring
Measure tunnel wall convergence and crown settlement during excavation. The device can be relocated after stabilization, providing cost-effective monitoring through construction phases.
Shotcrete Lining
Monitor shotcrete lining deformation during NATM tunneling. Track radial and tangential displacement with laser precision for safety assurance.
Structural & Geotechnical
Crack & Joint Monitoring
Monitor crack width changes and joint movements across structural elements. Laser provides non-contact measurement for hard-to-reach locations.
Slope Displacement
Track surface displacement on slopes and embankments with sub-millimeter accuracy for early warning of potential failure.
Settlement Monitoring
Differential settlement measurement across structures and foundations using laser distance triangulation.
Retaining Wall Deflection
Non-contact monitoring of retaining wall deflection and rotation during and after construction.
Laser Tiltmeter Specifications
| Sensor Type | 2-in-1 Laser Distance Meter & 3-axis MEMS accelerometer |
|---|---|
| Laser | Visible laser (class II) with 650 nm |
| Laser Power | 0.75 to 0.95 mW |
| Distance Resolution | 0.1 mm |
| Distance Accuracy | ±1 mm at 10 m • ±4 mm at 50 m • ±8 mm at 150 m |
| Memory | 100,000 readings including time, distance & 3-axis tilt |
| Power Source | 2 × 3.6 V C-size replaceable batteries |
| Data Transmission | LoRa radio communications (ISM sub-GHz) |
| Operating Temperature | −20°C to +60°C |
| Weather Protection | IP68 |
| Detailed Specifications | |||||||||||||||||||||||||||||||
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Tilt Range: ±15°
Tilt Accuracy: ±0.005°
Repeatability: ±0.0005°
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At 1 hr reporting:
10.3 yrs (20m)
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Need the full technical details?
Complete specs, diagrams, and compatibility info
Flexible Mounting for Any Environment
Choose the mounting configuration that best fits your deployment site.
Pole Mounting
Using aluminum plate WS-ACC-POLE-PL8 with 35 mm or 50 mm u-bolts for secure attachment to poles and posts.
Wall Mounting
Using external mounting brackets LS-ACC-MEC-MP (set of 2) for secure wall installation in tunnels and structures.
Horizontal & Surface Mounting
Using versatile plate LS-ACC-IN15-HP for horizontal and vertical surface deployment.
Got Questions About the Laser Tiltmeter?
Can't find what you're looking for? Contact our team — we're happy to help.
It measures angular changes and distance displacement in structures, tunnels, slopes, and rails — detecting both gradual shifts and sudden events that could signal instability or deformation. Combines laser distance with 3-axis tilt sensing.
Uses a class II visible laser (650 nm, 0.75-0.95 mW) with a built-in distance meter. The laser beam reflects off a target surface and the device measures distance with 0.1 mm resolution and ±1 mm accuracy at 10 meters.
In open sight, the LoRa range can reach up to 15 km. In tunnels, the range extends up to 4 km, and up to 10 km with repeaters. Range depends on terrain and environment.
Battery life depends on reporting period and distance measurement. With 1-hour reporting at 20m distance, up to 10.3 years. With 6-hour reporting, up to 14.3 years. Powered by 2 × 3.6V C-size replaceable batteries.
Yes — data is provided via MQTT, REST API, or FTP, allowing seamless integration into SCADA, IoT dashboards, or asset management systems. Compatible with CMT Edge and CMT Cloud platforms.
Ideal for tunnels, bridges, retaining walls, slopes, and other critical infrastructure where non-contact convergence monitoring with sub-millimeter precision is essential.