Geolini Digital Seismometer (with PT Geostroom)

Lightweight three-component (triaxial) digital seismometer that can detect earthquakes through micro-scale vibrations. Developed in collaboration with PT. Geostroom. Suited for all kinds of local (micro)seismic monitoring — tectonic, volcanic, or induced seismicity. Easy to install, highly reliable, and low power. Enhanced with IoT capabilities for real-time remote monitoring and wireless data transmission.

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Loggers and Instruments

Detect micro-seismic activity anywhere, monitor it from anywhere

WHO IT'S FOR

Geophysics and monitoring teams, volcano and mining observers, and researchers running local micro-seismic networks.

THE PROBLEM

Monitoring tectonic, volcanic or induced seismicity needs sensors that are easy to deploy in the field and reliable on low power, with data you can reach remotely.

HOW IT WORKS

Deploy the sealed unit on site – one person can install it.
The 24-bit digitizer records the three-component signal.
Data is transmitted wirelessly in real time and stored on 32 GB internal memory.

BENEFITS

Compact and robust, built for demanding field conditions.
Fully sealed with O-rings against water and the environment.
Quick one-person installation.
Low power consumption.
IoT-enabled: real-time remote monitoring and wireless data transmission.
High resolution and wide dynamic range.

FIT & COMPATIBILITY

Local (micro)seismic monitoring: tectonic, volcanic or induced seismicity.
Software: Geolini Realtime Software, Geolini Converter Software, Geolini Web IoT.

Parameter	Specification
System	True broadband force-feedback instrument; triaxial orthogonal (ZNE)
Natural Frequency	4.5 Hz
Damping	0.6 ± 5%
Coil Resistance	375 ± 5% Ω
Open-Circuit Sensitivity	28.8 ± 5% V/m/s
Harmonic Distortion	0.2%
Typical Spurious Frequency	240 Hz
Moving Mass	11.3 g
Maximum Coil Excursion (Peak-to-Peak)	4 mm
Maximum Tilt Angle	20°
Element Diameter × Height	25.4 × 36 mm
Power Voltage Range	10–16 VDC
Operating Temperature	−40 °C to +100 °C
Dimensions	Diameter: 100 mm × height: 170 mm
Weight	Approximately 3,000 g
Enclosure	Stainless steel and aluminium
Digitizer	24-bit; 100 Hz sample rate; digital HPF/LPF; Sinc decimation; output: `*.GLN`
IoT Controller	24 MHz crystal; 512 KB SRAM; 4–16 MB QSPI NOR flash; Wi-Fi IEEE 802.11 b/g/n (2.4 GHz)
On-Board Storage	32 GB internal
Real-Time Communication	Wireless interfaces