Description

seismic detectors

LR-88C is a product of E-PULSE series seismic node instrument, which is lightweight, convenient and stable. The product aims to reduce the difficulty of seismic exploration construction, improve construction efficiency and save operating costs, and create greater value for users while maintaining high quality geological data collection. Using advanced GPS/ Beidou synchronization algorithm, ultra-low power circuit design and wireless data download/charging technology, the product is fully integrated, built-in high sensitivity detector, built-in lithium battery, continuous working time, the whole body is contact-free, conducive to intelligent/automated construction, unlimited collection number expansion, very suitable for a variety of complex surface and hostile environment.

1. product characteristics
 light weight:580g
 Small size :55mm x 55mm x 145mm
 Wireless charging/wireless data download without any connector
 Ultra-low power consumption, battery life of 50 days (@ 12 hours a day continuous collection)
 Efficient and automatic deployment of mobile apps
 Intelligent start/sleep construction is simple
 intelligent coordinate matching, support no pile construction
 also supports GPS/ Beidou positioning system
 mobile phone Bluetooth quality control

seismic detectors

Physical index
ArgumentIndex
Weight580g
Dimension55mm×55mm×148mm
Operating temperature-40℃ to +70℃
Class of protectionIP68
Endurance @25℃25 days @2ms or 50 consecutive days (12 hours work &12 hours sleep)
Charging time3.5 hours
Instrument index
ArgumentIndex
Number of channels1
Sampling rate0.25ms,0.5ms,1ms,2ms,4ms
Advance gain0-24dB(6dB step)
Low cut filter1Hz, off DC or off
Anti-aliasing filter206.5Hz@2ms(82.6% Nyquist frequency) Maximum or minimum phase optional
The maximum value is @0dB2.5VpeaK
Equivalent input noise0.16μV@2ms @12dB
Instantaneous dynamic range128.8dB@2ms @12dB
Overall dynamic range150dB
Time accuracy±10μs
Built-in GPSGPS and Beidou (receive simultaneously) are used for timing and positioning
Internal storageExpandable from 8GB to 32GB
Geophone index
ArgumentIndexIndex
Optional detector5Hz10Hz
Natural Frequency (Hz)5±7.5%10±3.5%
Dc resistance (Ω)1850±5%1800±3.5%
Sensitivity (V/m/s)80±5%85.8±3.5%
damping0.6±7.5%0.48~0.54
distortion≦0.1%≦0.1%
False frequency (Hz)≧170≧240

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