RSTAR-AFFINITY-DL wireless geotechnical data logger

RSTAR-AFFINITY-DL Wireless Data Logger for geotechnical monitoring

Name: RSTAR-AFFINITY-DL Wireless Data Logger for geotechnical monitoring
Brand: RST Instruments
SKU: RSTAR-AFFINITY-DL

Reference: RSTAR-AFFINITY-DL - Manufacturer: RST Instruments

Modular digital data logger for remote geotechnical monitoring projects. It connects up to five instruments, communicates readings over LPWAN, and supports automated deployments with the RSTAR Affinity Gateway and instruments such as ShapeArray.

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Overview

The RSTAR Affinity Data Logger is a digital multi-sensor node designed to connect a wide range of analog and digital instruments to the RSTAR Affinity web-based environment for data management, transmission, and verification. Each unit can be configured to support up to five instruments of different types, delivering modularity, scalability, and flexibility for geotechnical and structural monitoring projects.

Instrument and logger configuration is handled through authenticated Bluetooth Low Energy using the RSTAR Affinity Field Utility mobile app. Once configured, the logger communicates readings over an LPWAN network through the RSTAR Affinity Gateway, with LoRaWAN support for long-range outdoor applications of up to 15 km depending on antenna and frequency.

Role in remote monitoring

In Orica's wireless automated remote deformation monitoring workflow, pairing ShapeArray with RSTAR Affinity helps automate the data chain from the sensing point to the visualization platform. In that setup, the Data Logger periodically acquires deformation data, sends it wirelessly to the gateway, and the gateway forwards it to central IT or cloud infrastructure for storage, analysis, and proactive risk management.

This approach suits slope monitoring, dams, tunnels, walls, buildings, and other assets where early movement detection and near real-time visibility are critical.

Operational benefits

Five configurable modules for specific instrumentation signal types.
Compartmentalized design to simplify maintenance.
Self-locating through Bluetooth for easier field setup.
Industrial IP67 protection and wide operating temperature range.
Standalone logging with authenticated local download when cellular coverage is limited.
CSV export for rapid field verification.

Applications

The logger is intended for civil infrastructure, energy, surface mining, underground mining, and broader geotechnical instrumentation deployments that require reliable telemetry and integration with vibrating wire sensors, thermistors, RS-485 devices, and ShapeArray-based systems.

Product features

Five configurable modules for specific instrumentation signal types.
Compartmentalized design for easier maintenance.
Bluetooth self-location for fast setup.
IP67 protection for operation from -40 C to 60 C.

Physical specifications

Enclosure dimensions: 159 x 120 x 87 mm.
Dimensions with wall mounting: 163 x 185 x 87 mm.
Total mass: 500 to 550 g.
Housing material: PBT.
Mounting options: wall, pole, mounting kit available.
External antenna options: +3 dBi and +5.8 dBi with N-type connector.

General specifications

Operating temperature: -40 C to 60 C.
Service life: 10 years.

Bluetooth Low Energy

Bluetooth 5.0 single mode.
Frequency: 2.402 to 2.480 GHz.
Raw data rates: 125 kbps, 500 kbps, 1 Mbps, and 2 Mbps.
Maximum transmit power: +8 dBm.
Low power listen mode: continuous.

LoRa radio

Operating regions: LoRaWAN US915, EU868, EU433, AS923-1/2/3/4, and AU915.
Protocol: LoRaWAN 1.0.1.
Range: up to 15 km at 900 MHz in open country, depending on antenna and frequency.

Power

Battery voltage: 3.6 V.
Number of cells: 3 primary cells.
Cell size: D.
Recommended battery: Saft LSH20.
Nominal capacity: 13.0 Ah at 20 C per cell.
Indicative battery life: about 10 years with 1 vibrating wire piezometer and about 3 years with a 100-segment ShapeArray at 20 C.

RS-485 interface

Part ID: IIM-RS-485.
Supply power: 12 VDC up to 300 mA.
Supported protocols: RS485.
Configurable serial data rate: 9600 to 115200 baud.
Serial port: half-duplex.
Isolation: 1500 VDC on 12 V and 3000 VDC on TTL signals.
Isolation ICs certified to EN62368-1.

Vibrating wire

Part IDs: IIM-VW-VW and IIM-VW-TH.
Excitation voltage: 5 V.
Resonant frequency range: 300 Hz to 7000 Hz.
Resolution: 0.11 Hz.
Accuracy: ±0.7 Hz.
Protection: 1500 VDC isolation on 5 V, 3000 VDC isolation on TTL, ESD protection up to ±2 kV.