Horizontal displacement
Calculated from changes in tilt and the spacing between measurement points to form a depth–displacement profile.
Subsurface displacement monitoring
RT-1020In-Place Inclinometer
Precision measurement at selected borehole depths
Installed at selected depths, the RT-1020 continuously measures tilt, temperature and supply voltage to support displacement analysis along a borehole. It is suited to long-term monitoring of slopes, dams, open-pit slopes, tailings facilities and excavations.
- 0.005°
- Tilt accuracy within ±30°
- ±90°
- Tilt range
- 2MPa
- Maximum water pressure
- RS485
- Standard Modbus protocol
Measurement capabilities
From individual readings to subsurface displacement
The RT-1020 remains fixed at selected depths to measure tilt, temperature and supply voltage. Tilt readings and installation spacing are used to calculate horizontal displacement at different depths.
Three-axis tilt
Tracks changes in tilt at each installed depth, providing the input for subsurface displacement calculations.
Temperature
Records borehole temperature for temperature compensation and analysis of changing environmental conditions.
Supply voltage
Monitors sensor supply voltage to help assess power conditions in the field.
Borehole installation
Place sensors at the depths that matter
Select installation depths according to borehole depth, ground conditions and the zones of interest. Sensors remain fixed at each level to track tilt changes and calculate horizontal displacement.
View full-size diagramSelect the monitoring depths
Set sensor positions and spacing around the depths of interest to measure deformation at different levels.
Maintain orientation
Positioning components hold the sensor orientation and measurement position for stable long-term monitoring.
Connect the data
Connect measurement points to an acquisition terminal through RS485 to obtain a borehole depth–displacement profile.
Product benefits
Precision and range for long-term fixed-point monitoring
Designed for fixed-depth borehole monitoring, the RT-1020 combines measurement precision, environmental protection and straightforward system integration.
Precise tilt measurement
Suited to small tilt changes and long-term monitoring at fixed depths.
Monitor key depths
Place sensors according to ground conditions and the zones of interest to track deformation along the borehole.
Suited to groundwater environments
Sealed construction supports long-term monitoring in boreholes containing groundwater.
Straightforward system integration
The RS485 interface and standard Modbus protocol support connection to data acquisition terminals and third-party monitoring systems.
Typical applications
Long-term monitoring at critical borehole depths
The RT-1020 monitors selected depths in boreholes for tailings facilities, open-pit mines, slopes, landslides and excavations.
Tailings facilities
Long-term stability monitoring at key depths in dam bodies and slopes around the facility.
Open-pit mines
Monitor deep displacement in ground layers affected by excavation and blasting.
Slopes & landslides
Track tilt and horizontal displacement at critical depths within a slope.
Excavations
Monitor horizontal displacement at different depths in retaining structures and surrounding ground.
Product demonstration
See the sensor and its positioning components
This 3D product demonstration shows the RT-1020 sensor body, positioning components and overall assembly.
Download product demonstrationTechnical data
RT-1020 specifications
Product resources
Downloads
RT-1020 product brochurePDF · Chinese · Earlier editionRT-1020 product demonstrationMP4 · Approx. 31 seconds · 3D animation
The brochure is an earlier edition. Some specifications have since been updated; refer to this page and confirm project requirements with our technical team.
Selection & use
Frequently asked questions
How do I choose between the RT-1020, RT-1015 and RT-1010?
The RT-1020 is suited to precise, long-term monitoring at selected borehole depths. The lightweight RT-1015 supports on-site assembly for shallow-to-medium-depth boreholes. The RT-1010 supports continuous measurement along multiple depths for horizontal displacement and settlement, with optional groundwater level, water temperature and multi-depth settlement measurements.
How is horizontal displacement calculated?
Tilt changes at fixed depths are combined with the installation spacing and initial reference to calculate horizontal displacement. Multiple measurement points form a depth–displacement profile.
How are sensor positions chosen?
Monitoring depths are normally selected around geological layers, potential slip surfaces and zones where deformation is of interest. Sensor quantities and spacing can be configured for the project.
Can the RT-1020 be used in boreholes containing groundwater?
The sensor uses 304 stainless steel, is sealed to IP68 and is rated for a maximum water pressure of 2MPa. Confirm suitability for the site water pressure and water corrosivity when selecting the product.