QL-TERRATONE-60: High-Precision 60-Second Broadband Seismograph
The QL-TERRATONE-60 is a high-precision 60-second broadband seismograph offering ultra-low noise below USGS NLNM, wide dynamic range (≥155 dB), and low power consumption (<2 W). Compact, rugged, and IP67-rated, it integrates sensing, acquisition, GNSS timing, and communications for reliable use in seismic networks, reservoir monitoring, mining, exploration, and research applications.
OVERVIEW
Description
Overview
The QL-TERRATONE-60 is a high-precision, research-grade broadband seismograph designed for earthquake detection and vibration monitoring. Offering a wide frequency response from 60 seconds to 80 Hz, ultra-low self-noise below the USGS NLNM, and an exceptional 155 dB dynamic range, it delivers unmatched accuracy in seismic observation.
Built to perform in the field, the QL-TERRATONE-60 is compact, rugged, and energy-efficient, consuming less than 2 W while delivering research-grade performance. Its IP67-rated design makes it ideal for national and regional seismic networks, reservoir-induced seismicity studies, mining and blasting vibration analysis, oil and gas exploration, and subsurface imaging research. The instrument supports both permanent seismic stations and portable field deployments, integrating advanced sensing, high-resolution data acquisition, and GNSS timing in a single reliable package.
Why Choose QL-TERRATONE-60?
The QL-TERRATONE-60 combines ultra-low noise, wide dynamic range, and robust automation in a lightweight and durable form factor. With built-in acquisition, precision timing, and network communication capabilities, it offers a turnkey solution for seismic monitoring, ensuring continuous, reliable, and high-fidelity seismic data even under the most demanding environmental conditions.
KEY FEATURES
Key Features
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Ultra-Low Noise: Performance below USGS NLNM (0.025–10 Hz).
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Wide Frequency Bandwidth: 60 s (0.0167 Hz) to 80 Hz.
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High Dynamic Range: ≥ 155 dB (1–10 Hz), with distortion better than –100 dB.
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Precision Sensitivity: ≥ 2000 V/m/s ±1 %, differential ±10 V output.
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UVW 54.7° Sensor Geometry: Triaxial capacitive structure ensures accurate orientation and conversion to N-S, E-W, and vertical channels.
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Timing Accuracy: GNSS and IRIG synchronization with <0.01 ms error and clock stability better than 0.5 ppm.
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Compact & Rugged: Φ150 × 205 mm, 5.5 kg, hermetically sealed, IP67 rating.
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Low Power: <2 W average consumption, operates on 9–20 VDC.
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Automation: Automatic mass unlock, lock, and centering with remote zero adjustment.
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Data Flexibility: EVT, MiniSEED, and GEOPEN formats; FTP downloads and real-time streaming.
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Reliability: MTBF > 50,000 h, CE/EMC/RoHS2 certified, backed by a 2-year warranty.
APPLICATIONS
Applications
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National and regional seismic networks
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Reservoir-induced earthquake monitoring
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Mining and blasting vibration studies
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Oil & gas seismic surveys
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Subsurface imaging and structural health research
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Portable seismic expeditions
SPECIFICATIONS
Technical Specifications
Mechanical & Environmental
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Configuration: Integrated triaxial broadband seismometer with data acquisition
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Structure: Capacitive, 54.7° UVW geometry
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Enclosure: Hermetically sealed, IP67 protection
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Dimensions: Φ150 × 205 mm
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Weight: 5.5 kg
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Operating Temperature: –40 °C to +60 °C
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Storage Temperature: –40 °C to +80 °C
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Humidity: 0–100 % non-condensing
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Mounting: Alignment pointer with precision leveling bubble
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Shock Protection: Automatic mass lock/unlock during power cycling
Sensor & Performance
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Bandwidth: 60 s (0.0167 Hz) to 80 Hz
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Sensitivity: ≥ 2000 V/m/s ±1 %
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Output Range: ±10 V differential
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Dynamic Range: ≥ 155 dB (1–10 Hz)
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Self-Noise: Below NLNM (0.025–10 Hz)
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Resolution: 74.5 nV/count
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Cross-Axis Sensitivity: ≤ 1 %
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Non-Linearity: ≤ 0.1 %
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Input Velocity Limit (1 Hz): > 10 mm/s
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Parasitic Resonance: > 100 Hz
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Calibration: Electronic (pulse, sine, pseudo-random code)
Power
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Supply Voltage: +12 VDC nominal (9–20 VDC)
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Power Consumption: <2 W
Data & Interfaces
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Acquisition: 32-bit, 3-channel ADC
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Dynamic Range: ≥ 135 dB @ 100 sps
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Sampling Rates: 50, 100, 200, 500 sps (simultaneous)
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Digital Filters: Linear-phase FIR / minimum-phase FIR
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Distortion: Better than –100 dB
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DAC: 16-bit, ±5 mA output
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Interface: LAN Ethernet, WiFi
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Protocols: Jopens, TCP/IP, FTP
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Formats: EVT, MiniSEED, GEOPEN
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Storage: ≥ 8 GB industrial CF card
Timing & Synchronization
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GNSS and IRIG timing support
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Synchronization Error: <0.01 ms
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Clock Stability: ≤ 0.5 ppm
Reliability
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Calibration: Factory certificate included
- Warranty: 2 years















