GL-JD1
Broadband Seismograph
Main application fields:
Coal mine, metal mine detection
Shallow geological survey
Exploration of coal mining voids
Geothermal resources exploration
Debris flow and landslide disaster warning detection
Urban underground space exploration
Urban building health monitoring
OVERVIEW
Description
The GL-JD1 Single-Moment Seismometer is a wireless node seismometer integrating seismic sensors, highperformance data acquisition modules, GNSS time servers, and lithium batteries. It supports both wireless and wired charging/data transmission modes: the wireless option facilitates field deployment and data recovery, while the wired option provides extended interfaces for long-term operation and deep-buried timing applications. Realtime data transmission can be achieved through Wi-Fi or optional 4G modules. Combining high-sensitivity detectors with low-noise data acquisition and precision clock services, it enables long-term accurate recording of seismic wave signals. With IP68-rated protection, this device adapts to harsh terrestrial environments and is suitable for resource exploration, geological surveys, urban subsurface space detection, and other applications.
Product Features
▲Autonomous acquisition + on-site wireless quality control
▲Wireless real-time transmission waveform
▲Wireless charging and data recovery
▲Select 4G module for remote waveform real-time observation and built-in GNSS positioning and timing module
▲Tilt Angle Measurement
▲Low cost, low power consumption, wide bandwidth
▲Stable structure, reliable performance, suitable for field work
▲Option: charging data downloader/case/shelf
Technical Parameter
Physicalindex
▲ Size:105mm×105mm×110mm(H) (withouttailcone)
▲Weight:About1kg(without tail cone)
▲Working temperature range:-30℃~+70℃
▲Protection performance:IP68
▲Storage capacity:32G(64G,128G optional)
▲Power supply:internal rechargeable lithium battery pack
▲Working time@25℃:30 days(continuous collection), 58 days(12 hours of work,12 hours of sleep)
▲Charging time:Wireless charging, less than 4hours
▲Data read back time: Wireless read back, less than 2 hours(32G)
▲Timing accuracy:+/-10μs
▲Timing accuracy:less than 1ms/h
▲Positioning:Beidou single modeor Beidou/GPS multi-mode optional
Collectionindicator
▲ADC bits: 32bits
▲Sampling output interval:0.25ms, 0.5 ms, 1ms, 2ms, 4ms
▲Frontend programmable amplification gain:x1,x2 , x4, x8, x16, x32, x64
▲Gainaccuracy:0.50%
▲Analog signal input range:±2.5Vp/GAIN
▲Real-time dynamic range@4ms:127dB@x4gain
▲Equivalent input noise at 4ms:0.22μVrms@ x4gain
▲Total harmonic distortion:-114dB@x1gain
▲Input signal bandwidth@0.25ms:0Hz~1652Hz
▲Anti-aliasing filter:linear or minimum phase filter ,-3dB bandwidth 82.6% Nyquist frequency
▲Programmable high passfilter:0.1-10Hz
▲Co-modulation suppression ratio:>100dB
Horizontal/vertical detector indicators
▲Natural frequency:4.5±0.5Hz
▲Road damping:0.5±10%
▲Open circuit sensitivity:80±10%V/m/s
▲Distortion:≤0.2%
▲Lateral natural frequency:≥160Hz
▲Allowable tilt Angle:≤10°













