Accelerographs for Monitoring Accelerations for Sale - QuakeLogic

QUAKELY-PRO – Accelerograph

Halil Yilmazer — Tue, 17 Mar 2026 16:38:43 +0000

QUAKELY-PRO is a rugged, high-precision accelerograph for seismic monitoring, earthquake early warning, and structural health applications, featuring real-time telemetry, edge computing, and low-power operation.

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SENTINEL-GEO-MKII

Cansu — Mon, 18 Aug 2025 14:18:55 +0000

SENTINEL-GEO-MKII is a premium-quality accelerograph with an embedded triaxial velocimeter that was conceived for structural monitoring and seismology with budget-sensitive constraints.

HIGHLY PERFORMANT AND COST-EFFECTIVE
The onboard MEMS triaxial accelerometer which exhibits a dynamic range 85dB and a self-noise 20µg/√Hz can be synchronously sampled up to 250sps.

The embedded triaxial velocimeter sensor is made of three geophones electronically extended to 2 seconds, synchronously sampled at 24bit with a dynamic range that exceeds 120dB.

The contribution, in terms of performance, given by the combination of the two sensors (accelerometer and velocimeter) is considerable. In fact the greater sensitivity of the velocimeter provides better seismic information whereas the resolution of the accelerometer limits the latter and provides better results with strong motion events where the velocimeter would cause saturation.

The integrated memory bank (32 ÷ 256 GB) allows you to manage a ring-buffer for long continuous recordings as well as event data.

The data format is Binary and MiniSEED.

The system implements sophisticated trigger criteria (STA/LTA and threshold) that distinguishes false events (i.e. environment vibrations) from true seismic events.

The internal GNSS receiver allows you to create a network where all the instruments are synchronized with the absolute time.

EASY TO USE
You can connect to SENTINEL-GEO-MKII locally via network (LAN or WiFi) or, alternatively, remotely using the internal 4G modem (optional).

INTEGRATED UPS
SENTINEL-GEO-MKII is powered by an external DC source (9 ÷ 36 Vdc) and it is equipped with its own internal battery (LiPo) which can guarantee an autonomy of 5 hours in case of a blackout. The battery can easily be replaced. The internal 4G modem (optional) is backed up by the internal battery.

ROBUST
The instrument comes in an anodized aluminum case which is rugged and shock-resistant and thus suitable for field applications.

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TELLUS-2s

Cansu — Mon, 18 Aug 2025 14:05:47 +0000

TELLUS-2s provides great results for local seismic monitoring with an excellent price-performance ratio. Tellus 2S is manufactured using high quality geophones whose frequency response is extended electronically with high thermal stability and low noise components. The transduction factor of every single unit is individually calibrated on the shake table with an accuracy within ±1%.

TELLUS-2s exhibits a flat bandpass between 0.5 Hz and 100 Hz. The transduction factor of the single ended version is 400V/m/s and 800V/m/s for the differential output.

TELLUS-2s is manufactured in AISI316 stainless steel housing offering a high level of protection IP67 thus it is ideal for harsh environment and for field use. An aluminum hard coated housing variant is available as a budget version when a rugged version is not needed.

TELLUS-2s exhibits a flat bandpass between 0.5 Hz and 100 Hz. The transduction factor of the single ended version is 400V/m/s and 800V/m/s for the differential output.

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TELLUS-BB

Cansu — Mon, 18 Aug 2025 14:02:13 +0000

High Performance triaxial broad-band seismometer.

TELLUS-BB is a high quality broad-band triaxial seismometer designed for easy deployment and safe transport.
TELLUS-BB is based on Galperin configuration which allows to more easily distinguish external noise sources from internal ones and achieve higher performance.
TELLUS-BB can be ordered with a flat band-pass between 200s-20s and 100Hz. The lower frequency corner can be customized at the
order. The transduction factor is 1500V/m/s, the output differential 40Vpp.
TELLUS-BB is manufactured in aluminum (surface treatment) housing offering a high level of protection IP68K making it ideal for harsh environment and for field use.
TELLUS-BB is robust magnetic shielded and exhibits a low temperature sensitivity.

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GECKO SMA: STRONG MOTION ACCELEROGRAPH

quakelogic — Mon, 03 Feb 2025 23:59:41 +0000

The Gecko SMA is an all-in-one strong motion triaxial accelerograph (measuring East-West, North-South, and Up-Down) designed for structural health monitoring. It combines user-friendliness with the reliability and simplicity of a MEMS accelerometer, offering full-scale ranges from ±2g, ±5g, ±10g, and beyond—up to ±400g.

Effortless Data Storage & Installation

Data is continuously recorded and stored on an SD card in MiniSEED format, automatically organized into year/month/day/hour folders for easy browsing on any PC. Installation is equally straightforward—simply secure the Gecko SMA using the included rock anchor, drill bit/punch, and lock nut to mount the threaded rod directly into the ground.

On-Site Configuration & Power Efficiency

The standard LCD display and keypad allow full configuration without needing a PC in the field. Consuming only 1W of power, the device can run for approximately a month on a lead-acid battery similar in size to a car battery.

Connectivity & Real-Time Monitoring

All Gecko models include dual alarm outputs and support external Ethernet, WiFi, or cellular modem modules for real-time data streaming. Using our free software, Streams, users can:

Archive and visualize real-time data remotely.
Access live feeds via the web.
Receive email alerts based on user-defined thresholds.

Ideal for Structural & Seismic Monitoring

The Gecko SMA employs MEMS accelerometer technology to detect high-intensity ground motion that could cause structural damage. While a magnitude 2.0 earthquake at 100 km distance may not be detected, the Gecko SMA’s wide full-scale range ensures the capture of larger or near-field events.

Although the Gecko SMA-HR offers 300 times greater sensitivity, the Gecko SMA provides a cost-effective alternative with low noise levels, making it an excellent choice for near-field blast monitoring and structural assessments.

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RASPBERRY SHAKE RS4D STRONG-MOTION SEISMOGRAPH

quakelogic — Mon, 24 Jun 2024 09:52:32 +0000

Harnessing the power of both accelerometers and geophone technology, the RS4D delivers reliable seismic monitoring from subtle micro-tremors to the most powerful earthquakes.

Overview

The RS4D combines a vertical geophone velocity sensor with three accelerometers, providing a unique dual-sensor design that captures both ground velocity and ground acceleration. This extended detection range makes it ideal for environments where traditional seismographs may saturate during strong shaking.

With its three accelerometers covering all axes (vertical, north–south, east–west), the RS4D ensures high-fidelity measurements across the seismic spectrum—perfect for earthquake-prone regions and structural health monitoring applications.

Key Features

Dual-sensor design: integrated velocity (geophone) + acceleration (accelerometers)
Captures both strong motion and micro-seismic activity
Three accelerometers for full 3-axis ground motion detection
Wide decibel range for greater sensitivity and accuracy
Compact, all-in-one, and highly portable design

Why Choose the RS4D?

The RS4D is purpose-built for high-seismic environments, staying accurate and on-scale even during extreme ground shaking. Its dual measurement system enables detailed analysis of both near-field and distant seismic events while ensuring local acceleration is fully captured.

Beyond earthquake monitoring, the accelerometer suite expands the RS4D’s capability to structural health monitoring, making it an invaluable tool for infrastructure safety, resilience studies, and seismic research programs.

Whether deployed for local seismicity, strong-motion studies, or advanced SHM, the RS4D provides professional-grade data quality in a portable, easy-to-deploy package.

Scientific Publications Featuring RS4D

Integration & Deployment

Like all Raspberry Shake models, the RS4D is network-ready, easily integrates into existing seismic systems, and can be rapidly deployed for immediate data collection.

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Quakely – Seismic Monitoring System | Earthquake Early Warning & Structural Health Monitoring Sensor

quakelogic — Fri, 17 May 2024 20:14:30 +0000

Quakely by QuakeLogic is a reliable, compact, USA-made accelerograph with a ±2g MEMS sensor, real-time data streaming, earthquake early warning, and smart alerts via Telegram and SMS—built for precision, efficiency, and seamless integration.

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Palert-F330 Tri-Axial Force Balance Accelerograph for Earthquake Early Warning and Structural Monitoring

quakelogic — Fri, 02 Feb 2024 10:28:39 +0000

Palert-F330 Tri-Axial Force Balance Accelerometer (FBA)

The Palert-F330 by Sanlien Technology is a high-performance tri-axial Force Balance Accelerometer (FBA) engineered for seismic research, earthquake early warning systems (EEWS), and structural health monitoring (SHM) applications. With a dynamic range greater than 120 dB, the Palert-F330 delivers exceptional precision and stability, making it ideal for critical strong-motion monitoring in buildings, bridges, and industrial facilities.

Designed for high-accuracy seismic measurements, this compact and cost-effective accelerometer provides reliable data acquisition for early detection and risk mitigation. Its rugged construction and optimized sensitivity make it suitable for both scientific research and industrial safety automation.

Key Applications

Earthquake Early Warning Systems (EEWS)
Structural Health Monitoring (SHM) for buildings and bridges
Strong-motion recording for seismic research
Industrial risk management and automation safety
Automatic equipment shutdown for disaster prevention
Personnel protection on production lines and high-risk sites

The Palert-F330 Force Balance Accelerometer offers a powerful, efficient, and affordable solution for organizations seeking dependable earthquake monitoring and structural safety instrumentation.

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E-QUAKE NOVA – HIGH DYNAMIC RANGE ACCELEROGRAPH

quakelogic — Wed, 24 Jan 2024 11:25:50 +0000

This product is a cutting-edge solution for seismic monitoring networks, featuring an ultra-low noise, three-component internal seismic accelerometer that surpasses the performance of conventional force-balanced servo accelerometers. The fully digital system delivers exceptional noise characteristics and unmatched resolution, with real-time acceleration data streaming via Ethernet. Powered by an embedded Linux-based single board computer, it seamlessly manages configuration, data processing, transfer, event handling, and storage. It offers the highest price-to-performance ratio and stands out as the most advanced design in its class.

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GL-P2C

quakelogic — Wed, 24 Jan 2024 11:19:17 +0000

GL-P2C intensity meter uses a high-sensitivity triaxial MEMs accelerometer, embedded with Linux operating system, provides LAN network interface, supports WiFi, CDMA, GPRS, 3G wireless network, built-in 8G large-capacity memory, and can provide network timing. It can be powered by the network and has a built-in lithium battery. High integration, small size and low power consumption. GL-P2C has functions such as automatic detection of earthquake events, intensity calculation, and automatic estimation of parameters such as τc and Pd. It can output continuous waveform data, automatically publish earthquake trigger information, intensity information, and instrument status information through the network or SMS, and has a local sound alarm function. . GL-P2C has a large-size color LCD screen, which can display real-time waveform data, set working parameters, and earthquake information, and is easy to install on the wall.

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