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Subsurface displacement monitoring

RT-1015Lightweight In-Place Inclinometer

Lightweight. Easy to install. Assembled on site.

Each section weighs approximately 300g and connects on site to monitor lateral displacement, tilt and temperature. Recommended for boreholes within 60m, with a maximum installation depth of 100m, for slopes, dams, open-pit mines and excavations.

Two views of an RT-1015 measurement unit with guide arms
Lightweight measurement unit · Product rendering

Key benefits

Flexible deployment. Continuous insight below ground.

Lightweight design. Flexible on-site assembly.

At approximately 300g per section, RT-1015 is easy to transport, handle and install.

Choose 50cm, 100cm or 200cm sections to suit the borehole depth and measurement spacing. Connecting cables and fixed-length wire ropes join the units, simplifying on-site configuration and subsequent maintenance.

Automatic temperature compensation for stable displacement measurements

With displacement accuracy of 1mm@50m, RT-1015 continuously measures movement in two horizontal directions at different depths to reveal deformation within the borehole.

Tilt and temperature are measured together. Automatic temperature compensation reduces the effect of changing ambient temperature on measurement results.

Sealed construction for long-term borehole monitoring

High-strength composite and 304 stainless steel construction, IP68 protection and 2MPa water pressure resistance make RT-1015 suitable for long-term monitoring in boreholes with groundwater.

Confirm the configuration against the maximum water pressure at the site.

Multiple protocols for straightforward system integration

An RS485 interface supports standard Modbus, ASCII and a proprietary hexadecimal protocol. Connect to dedicated data acquisition terminals or third-party acquisition equipment for integration with existing monitoring systems.

An optional combined groundwater level / water temperature sensor measures both parameters together.

Installation depthRecommended: within 60m. Maximum: 100m. For depths over 60m, confirm power, communication and installation conditions with our technical team.

Configuration guide
RT-1015 borehole assembly with suspension cover, measurement units, fixed-length wire ropes and optional combined groundwater sensor; original Chinese labels
Borehole assembly · Original Chinese diagram. The optional groundwater level / water temperature sensor is shown.

Structure & installation

Assemble on site. Monitor along the borehole.

The RT-1015 consists of lightweight measurement units, connectors, a suspension cover, a bottom weight and a data acquisition terminal. The string can be assembled on site to suit the borehole depth.

  1. 01

    On-site assembly

    Choose 50cm, 100cm or 200cm sections. Connecting cables and fixed-length wire ropes maintain the specified measurement spacing.

  2. 02

    Borehole collar fixing

    The suspension cover supports the sensor string and keeps its monitoring depth fixed.

  3. 03

    Bottom weight

    Maintains string tension and installation stability. A groundwater level / water temperature sensor can be added to suit the project.

The data acquisition terminal powers the sensors and connects their data to field acquisition equipment or remote communication terminals.

Measurement unit, guide arms and UP direction marking
Measurement unit & guide arms
Two views of the borehole suspension cover and control assembly
Borehole collar assembly

Watch the installation

From unpacking and testing to assembly and borehole installation. Original footage with Chinese captions.

Download video

Product selection

Configure for your borehole

Start with installation depth and measurement spacing, then confirm the bottom configuration and data connection.

Discuss your configuration
01Installation depthRecommended: within 60m. Maximum: 100m.

For depths over 60m, have the technical team confirm power, communication and installation conditions. For depths over 100m, consider RT-1010 first.

02Measurement spacing50cm / 100cm / 200cm

50cm sections provide closer observation of localized deformation; 100cm balances measurement density and installation efficiency; 200cm reduces the number of units in longer strings.

03Bottom configurationWeight and optional combined sensor

A bottom weight maintains string tension in the standard configuration. A groundwater level / water temperature sensor is available as one optional component.

04Data connectionDedicated terminal or third-party acquisition

Power and communication arrangements depend on field conditions. Provide borehole depth, measurement spacing, groundwater conditions and integration requirements.

Engineering applications

Monitoring below the surface

01

Slopes & Landslides

Track lateral displacement at different borehole depths to identify deformation zones and developing movement.

02

Dams & Hydropower

Monitor internal lateral displacement in shallow-to-medium-depth boreholes within dams and surrounding areas.

03

Open-Pit Mine Slopes

Monitor subsurface displacement in boreholes on benches and in key risk areas affected by mining and blasting.

04

Excavations

Measure displacement at different depths in retaining structures and surrounding ground during construction.

Technical data

RT-1015 specifications

For product selection and system integration. Confirm the final configuration with the technical team.

Technical Specifications
Measurement & configuration
Measurement directionsTwo horizontal directions
Measured dataLateral displacement, tilt and temperature
Section lengths50cm / 100cm / 200cm
Recommended installation depthWithin 60m
Maximum installation depth100m
Displacement resolution0.01mm
Displacement accuracy1mm@50m
Tilt range±90°
Tilt resolution0.001°
Tilt accuracy0.05°
Temperature resolution0.1°C
Temperature accuracy0.5°C
Environment & construction
Operating temperature-40°C to +85°C
Ingress protectionIP68
Water pressure resistance2MPa
MaterialsHigh-strength composite and 304 stainless steel
WeightApprox. 300g per section
Maximum diameterφ30mm
Power & communication
Supply voltageDC 5–30V; DC 12V recommended
Average operating current≤0.4mA@12V per section
Maximum instantaneous current<30mA@12V per complete sensor string
Hardware interfaceRS485
Communication protocolsStandard Modbus, ASCII and a proprietary hexadecimal protocol
Optional monitoring
Groundwater level / water temperature sensorOne optional sensor measures groundwater level and water temperature together.

Product resources

Downloads & support

The brochure is an earlier edition. Installation depth and current figures have since been updated; use the specifications on this page and confirm requirements with our technical team.

Need an installation guide or protocol documentation?

Contact our technical team for documentation matched to your configuration.

Request technical documentation

Selection & integration

Frequently asked questions

How should I choose between RT-1015 and RT-1010?

RT-1015 weighs approximately 300g per section, assembles on site and is recommended for boreholes within 60m. RT-1010 suits deep boreholes, longer strings, high-precision and high-water-pressure monitoring, with up to 400 sections and a high-pressure version rated to a maximum of 4.5MPa.

Which section length should I choose?

50cm sections suit localized deformation monitoring. 100cm balances measurement density and installation efficiency. 200cm suits longer strings where fewer measurement units are preferred.

How many displacement directions are measured?

RT-1015 measures displacement in two horizontal directions, together with tilt and temperature at each unit.

Can groundwater level and water temperature be measured together?

Yes. One optional groundwater level / water temperature sensor measures both parameters together.

Can RT-1015 remain installed in groundwater?

IP68 protection and 2MPa water pressure resistance support long-term borehole monitoring in groundwater. Confirm the configuration against the maximum water pressure at the site.

Which acquisition equipment can it connect to?

RT-1015 uses RS485 and supports standard Modbus, ASCII and a proprietary hexadecimal protocol for connection to data acquisition terminals or third-party monitoring systems.

What information is needed for selection?

Provide borehole depth, measurement spacing, groundwater conditions, power availability and data integration requirements so we can confirm the section length, section count, bottom configuration and associated equipment.

Start with your monitoring needs

Find the right monitoring configuration for your project

Talk to our team