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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:

  1. Wide frequency band coverage (0.1 Hz – 120 Hz)

  2. Miniaturized construction using 304 stainless steel

  3. Capacitive displacement sensing with force-balanced electronic feedback for UD, EW, and NS triaxial outputs

  4. Embedded design based on an ARM processor and Linux OS

  5. Dual TF card architecture with internal continuous storage and external removable cards

  6. 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).

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