LUNITEK Archives - QuakeLogic

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-10s

Cansu — Mon, 18 Aug 2025 14:15:19 +0000

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 exhibits a flat bandpass between 0.1Hz and 50Hz, opt. 100Hz. The transduction factor is 400V/m/s for the single ended version and 800V/m/s for the differential output.

TELLUS-10s 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 for whom that prefer to save budget and don’t need a rugged version.

A leveling bubble and adjustable spikes are provided for an easy regulation and a quick installation, on request it is possible to have other fixing systems: a wall-mount baseplate and longer spikes.

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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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JUPITER

quakelogic — Sat, 03 Feb 2024 05:44:02 +0000

Jupiter adeptly identifies all devices connected to the network, whether through VPN or WAN, eliminating the need to manually input IP addresses. It allows for the visualization and streaming of both data and the health status of the units, utilizing the miniSEED protocol.

Users have the capability to transmit a universal configuration to all network devices or issue common commands (start, stop, manual trigger, etc.), obviating the need for individual unit access.

Jupiter is proficient in aggregating data from the instruments and saving it in a local folder.

The software accommodates both built-in and third-party analysis scripts and can dispatch remote alarms upon the activation of specific events.

Powering Jupiter is Obspy Python, a specialized library for seismology, furnishing users with the flexibility to easily develop tailor-made analysis scripts.

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TELLUS BOREHOLE

quakelogic — Mon, 29 Jan 2024 09:27:22 +0000

Tellus BH short band is equipped with a self-supporting cable thus no additional wire is needed. Broadband version of Tellus BH, which are heavier, are equipped with a fixing point for a wire along with the signal cable.

Tellus BH is manufactured in stainless steel (AISI316) and does not require mass locking or centering.

A passive clamping system is provided on request.

Tellus BH provides excellent long term stability, reliable measurements and is ideally suited to challenging sites.

Tellus BH can be used for a variety of applications from seismology to oil and gas.

KEY FEATURES

TELLUS BOREHOLE
Dynamic range > 140dB for shortband, >150dB for broadband
Frequency range 1, 5, 30, 60 and 120 seconds up to 50Hz (100Hz opt)
Tansduction factor 400 V/m/s (SB) and 2000 V/m/s (BB)
High accuracy
Low self-noise
Good thermal stability
Low power
Robust
No need for mass centering or mass locking

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TELLUS-R: ROTATIONAL SENSOR

quakelogic — Mon, 29 Jan 2024 08:31:35 +0000

The Tellus-R is a state-of-the-art low-noise rotational seismometer engineered to serve as the cornerstone of next-generation seismic monitoring networks. By recording all six components of ground motion—including translational and rotational—the instrument enables precise detection of rotational earthquake modes, significantly improving the completeness and accuracy of seismic observations.

HIGH PERFORMANCE

Delivering a resolution of 6 × 10⁻⁸ rad/s at 1 Hz, the Tellus-R provides unmatched sensitivity across a 117 dB dynamic range and a frequency response of 0.033–50 Hz (optional 0.01–100 Hz). With an exceptionally low self-noise PSD of –125 dB (rel. 1 rad/s² Hz), it ensures ultra-quiet operation. Power efficiency is another advantage: consuming only 30 mA at 10–18 VDC, it outperforms traditional electro-mechanical and fiber-optic sensors. An integrated calibration input (1:1) allows for straightforward periodic verification without specialized external equipment.

ROBUST DESIGN

Built for long-term deployment in demanding field conditions, the Tellus-R is housed in hard-coated anodized aluminum with IP67 protection (IP68 optional). Compact and lightweight (Ø180 mm × 140 mm, 2 kg), it operates in any orientation, with a temperature range of –15 °C to +55 °C (optional –40 °C to +55 °C). A 3-meter rugged cable and PT06E-14-19P(SR) connector are supplied standard, with full customization available.

APPLICATION AREAS

The Tellus-R is purpose-built for advanced seismology and engineering applications, making it a perfect instrument for studying rotational seismic waves:

Earthquake Science: Detecting rotational components of seismic waves for improved source characterization and rupture dynamics.
Structural Engineering: Measuring rotational motions in buildings, bridges, and critical infrastructure for seismic resilience studies.
Seismic Hazard Assessment: Enhancing the accuracy of ground motion prediction models by incorporating rotational data.
Seismological Networks: Integration into modern arrays for six-degree-of-freedom (6-DOF) earthquake monitoring.
Microseismic and Industrial Monitoring: Recording subtle rotational motions in experimental, geotechnical, or industrial environments.

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TELLUS-L: SHORT PERIOD SENSOR

quakelogic — Mon, 29 Jan 2024 08:27:16 +0000

The Tellus-L’s standard flat bandpass ranges from 1 to 100 Hz, 0.2 to 100 Hz is available on request.

The transduction factor is 120 V/m/s and the output is differential.

It’s rugged design and IP68 protection make it ideal for harsh environments and for field use, moreover a metallic spike facilitates the installation in the ground.

Tellus-L comes in vertical or tri-axial variant.

KEY FEATURES

TELLUS-L SEISMOMETER
Sensitivity 120 V/m/s (tolerance ±10%)
Frequency range: 1 – 100 Hz
Differential Output
Low self-noise power
Robust

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TELLUS-C BROADBAND COMPACT SEISMOMETER

quakelogic — Mon, 29 Jan 2024 08:22:55 +0000

The TELLUS-C is a high-quality, compact broadband triaxial seismometer designed for easy deployment and safe transport. Utilizing the Galperin configuration, this advanced design helps distinguish external noise sources from internal ones, enhancing performance.

The Tellus-C seismometer offers a customizable flat band-pass between 120s-20s and 100Hz, allowing adaptability for various seismic applications. The high transduction factor of 2000V/m/s ensures precision in data acquisition, and the 40Vpp differential output enables seamless integration with modern seismic monitoring systems.

Built for field and laboratory applications, the Tellus-C is housed in corrosion-resistant aluminum, featuring IP68K weather protection for harsh environments. Its magnetic shielding and low thermal sensitivity ensure stability across a wide temperature range.

Why Choose TELLUS-C?

Precision & Reliability – High dynamic range and excellent low-noise performance
Durability & Protection – Robust IP68K-rated aluminum housing
Easy Integration – Customizable frequency range and output options
Field & Laboratory Ready – No mass locking/centering required, with low power consumption

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TELLUS-30S-60S-120S: SURFACE OR POSTHOLE BROADBAND SENSOR

quakelogic — Mon, 29 Jan 2024 08:20:26 +0000

HIGH ACCURACY

Tellus broadband is manufactured using high quality MET sensors whose frequency response can also be tuned electronically to custom periods, 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%.

FROM 30 DOWN TO 120 SECOND PERIOD

Tellus broadband exhibit a flat bandpass up to 50Hz or optionally up to 100Hz.

The lower frequency corner is 0.033Hz (30 seconds) for the 30s, 0.016Hz (60 seconds) for the 60s and 0.0083 Hz (120 seconds) for the 120s. The standard transduction factor is 2000V/m/s but customizable in the range 350 – 20000; the output is differential.

ROBUST

Tellus broadband is manufactured in aluminum hard coated housing and does not need mass locking or centering and therefore is well-suited to harsh environments.

A leveling bubble and adjustable spikes are provided for an easy regulation and quick installation.

Tellus broadband family is available in two versions: the Tellus Compact which is small and light and the Tellus Full-size which offers the highest performance.

Tellus PH is a variant of the compact which is ideal for post hole installations.

KEY FEATURES

TELLUS-30S-60S-120S SEISMOMETERS
Dynamic range > 150dB
Frequency range 30s, 60s and 120s up to 50Hz (100Hz opt)
Tansduction factor 2000V/m/s standard (350-20000 opt)
High accuracy
Low self-noise
Good thermal stability
Low power
Robust
No need for mass centering or mass locking

APPLICATONS

National, Regional and Global Seismicity

SELF NOISE

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