GL-CS2+
Short Period Seismometer
Main application areas:
The regional seismic network is used for natural earthquake observation, reservoir induced earthquake monitoring, mine earthquake monitoring and microseismic observation in oil and gas exploration
OVERVIEW
Description
The GL-CS2+ is the latest low-power, high-reliability, and high-performance tri-directional shortperiod seismometer developed by Beijing Gangzhen Company. Featuring three identical inclined suspension pendulums evenly distributed along a circular path, it incorporates built-in force-balancing electronic feedback circuits, coordinate transformation circuits, control circuits, and other components. Key features include: 1) Small size, low power consumption: φ136×98mm; operating power consumption less than 0.8W.
2) High performance index: band range 0.5~80Hz; the instrument’s own noise in 0.5~10Hz band is lower than the latest Earth minimum noise model (NLNM). 3) Strong adaptability to environment: working temperature range-20℃~60℃; can work normally on the inclined installation surface of ±5 degrees at most and ensure that all parameters of the instrument remain unchanged. 4) Waterproof sealing design: 304 stainless steel shell, waterproof, corrosion resistant.5) Easy to install, easy to use: automatic zero adjustment after power on; remote control of zero adjustment through data collector. 6) Working stability: working life is designed and manufactured according to 10 years, MTBF is more than 30,000 hours, anti-voltage fluctuation and surge.

Technical Parameter
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Mechanical structure: UVW three-directional integrated installation
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Mode of transduction: displacement transduction
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Output signal direction: vertical (UD), east-west (EW), north-south (NS)
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Output physical quantity: ground motion speed
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Bandwidth: 0.5Hz~80Hz
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Maximum output signal: ±10V (single end), ±20V (double end)
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Sensitivity: 2000V/ (m/s)
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Dynamic range: >140dB
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Limiting level: 9.1mm/s@10Hz
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Horizontal inhibition ratio: <1%
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Parasitism resonance: >150Hz
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Self-noise level: 0.5Hz~10Hz lower than NLNM
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Anti-tilt capacity: ≤5°
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Output resistance: <100Ω
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Output current: >5mA
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Load capacitance: >0.01uF
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Power supply voltage: 9~18V
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Sensitivity: 9~12 (m/s2)/A
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Power consumption: 0.8W
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Zero adjustment and monitoring: builtin zero adjustment motor, support for command zero adjustment and remote monitoring
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Seal chamber size: Ø98mm, H136mm
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Working temperature: -25℃~60℃
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Seal chamber material: 304 stainless steel
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Interface standard: “meet the relevant requirements of DB/T13” Ground vibration observation instrument interface and control
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Weight: 3.6kg















