GL-CS60/120 Three-Component Broadband Seismometer
GL-CS60/120 broadband seismometer delivers compact, low-power, high-accuracy seismic monitoring with three-axis sensing and real-time reliability.
OVERVIEW
Description
GL-CS60/120 Three-Component Broadband Seismometer
The GL-CS60/120 is a compact, lightweight, and low-power broadband seismometer designed for high-precision ground motion monitoring. It integrates three identical inclined pendulums, force-balance feedback electronics, coordinate transformation circuits, and advanced control systems into one portable unit.
Main Applications
The GL-CS60/120 is ideal for:
- National and regional seismic networks
- Natural earthquake observation
- Reservoir-induced seismicity monitoring
- Mine seismic event monitoring
- Oil and gas exploration
- Underground structure imaging and scientific field surveys
- Long-term fixed monitoring or mobile seismic surveys
Key Features
- Compact and Lightweight: Φ150×213 mm (5.5 kg bare), 220×220×300 mm (8 kg packaged)
- Wide Operating Range: Temperature -35°C to +55°C, humidity 0–98%
- Low Power Use: Consumes less than 0.7 W during operation
- High Performance: Self-noise level (100 s–15 Hz) lower than NLNM
- Broad Frequency Band: 60 s–80 Hz or 120 s–80 Hz
- Easy Installation: Dual directional indicators for alignment; automatic unlock and zeroing on power-up; automatic lock on shutdown; continuous auto-zero correction during long-term use
- Remote Control: Supports remote unlock, zeroing, calibration, locking, and zero-point query
Why Choose the GL-CS60/120?
The GL-CS60/120 provides high stability, portability, and precision in seismic monitoring. Its combination of low power consumption and real-time control functions makes it an excellent solution for seismic research, hazard monitoring, and global seismic networks.

GL-CS60/120 noise power spectral density and limit level curve

Technical Parameter
Technical Specifications – GL-CS60 / GL-CS120 Broadband Seismometer
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Structure: Three-axis integrated design, capacitive transduction, 54.7° UW configuration
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Bandwidth:
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GL-CS60: 0.0167 Hz – 80 Hz
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GL-CS120: 0.0083 Hz – 80 Hz
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Sensitivity: 2000 V·s/m ±1%
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Maximum Output Signal: ±20 V (differential, dual-ended)
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Dynamic Range: >155 dB (1–10 Hz)
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Output Impedance: <100 Ω
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Calibration Function: Internal resistance 50 Ω; sensitivity 95 V·s²/m
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Linearity Distortion: <0.1%
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Horizontal Sensitivity: <1%
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Total Harmonic Distortion (THD): < -60 dB
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Input Limit Velocity (1 Hz): >10 mm/s
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Parasitic Resonance: >160 Hz
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Power Supply: 12 VDC (operating range 9–18 VDC), average consumption <0.7 W
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Zero Adjustment: Automatic and remote-controlled
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Pendulum Control: Automatic swing release at power-on; automatic lock at power-off
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Weight: ~5.5 kg (instrument only), ~8 kg (with packaging)
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Dimensions: Ø150 × 213 mm (without handle), 220 × 220 × 300 mm (packaged)
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Operating Environment: -35°C to +55°C; relative humidity 0–98%
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Storage Environment: -55°C to +80°C
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Enclosure Protection: IP67 rated














