GL-PS2+
Short Period Seismograph
Main application fields:
- High density seismic array observation
- Shale gas fracturing monitoring
- Pulsed chromatography imaging
- Earthquake early warning monitoring
- Rockfall monitoring
- Earthquake safety assessment
OVERVIEW
Description
The GL-PS2+ Seismometer is a compact, portable short-period instrument designed for dense seismic monitoring. It integrates a triaxial seismometer, data acquisition and storage circuits, dual TF card storage, data transmission, and wireless Wi-Fi functionality. The system supports Beidou time synchronization, features an OLED display, and offers automatic power-on rotation along with remote unlock rotation.
With its compact design and comprehensive functions, the GL-PS2+ provides:
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Wide frequency band coverage (0.1 Hz – 120 Hz)
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Miniaturized construction using 304 stainless steel
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Capacitive displacement sensing with force-balanced electronic feedback for UD, EW, and NS triaxial outputs
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Embedded design based on an ARM processor and Linux OS
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Dual TF card architecture with internal continuous storage and external removable cards
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Integrated touchscreen for both switch operation and display functions
Spectrum and Phase Frequency Characteristic Curve


Self noise (SN) curve and clipping level curve (Clip level)

Technical Parameter
▲Sensor type: capacitive displacement transducer, UD, EW and NS three-directional output;
▲Bandwidth: 0.1Hz120Hz;
▲Sensitivity: 1500V/(m/s), double end differential output;
▲Dynamic range: greater than 135dB;
▲Distortion: less than 0.1%;
▲Self-noise level: 0.1Hz8Hz lower than NLNM;
▲Channel number: 3 channels are built in;
▲Resolution: ≥28 bits;
▲Sampling rate: 50,100,200,500,1000Hz;
▲Digital filter: supports two kinds of filters with linear correlation, FIR and minimum phase FIR, which can be set;
▲Distortion: better than -100dB;
▲Timing: Beidou timing;
▲Timing accuracy: better than ±10us when satellite timing is synchronous;
▲Shooting accuracy: ±0.05ppm;
▲Status setting, communication: support Bluetooth, RS232;
▲Parameter setting: Bluetooth, computer, mobile APP;
▲Calibration signal: no less than 16-bit DAC, maximum output current ±5mA;
▲Signal type: pulse or sine wave can be selected, which can be configured through parameters, and two starting modes of timing and instruction are supported;
▲Storage medium: 64G industrial memory card;
▲Data playback: plug and play memory card, copy continuous waveform recording, support event triggered recording and continuous waveform recording two recording modes;
▲Data format: miniSEED;
▲Dynamic range: better than 135dB (110Hz);
▲Calibration, parameter setting and working status monitoring can be completed remotely;
▲Data transmission mode: support Bluetooth, RS232;
▲Anti-tilt ability: installation indicator horizontal bubble, foot leveling automatic zero adjustment within 3° of soil;
▲System control (switching on/off): magnetic control switch, indicator light display;
▲External power supply: 9-32V, can be powered through USB interface;
▲Power supply: external power supply;
▲Impact resistance: free fall of 1 meter with packaging without damage;
▲Installation method: support base foot installation and soil layer tail nail insertion installation two ways;
▲Temperature range: -20℃+60℃;
▲Working humidity: 0~100%;
▲Waterproof performance: IP68, 304 stainless steel;
▲Weight: less than 7.5kg (excluding packaging).
















