4 Components Natural and Artificial Source 0.2 Hz Low-Frequency Node Seismograph

Product Description

Product Description

Mixed-field Sources 4 Component Seismic Nodals

  GDT series seismic nodals enables the simultaneous acquisition of seismic signals from both natural and artificial sources across different frequency bands. The nodal Includes 3 low-frequency components (LX, LY, LZ) and 1 HZ component, and can be converted into a 4-channel seismograph to connect seismic geophones supporting any frequency. By connecting these 4- cahnnels seismographs in series, it is possible to configure multi-channel seismograph (such as 24-channels or 48-channels systems).

  The GDT series nodal seismograph is designed to function both as seismograph mainframe and as geophone, combining the features and advantages of both traditional seismograph and nodal seismograph. The GDT series of nodal seismograph are suitable for a wide range of applications, including engineering geological surveys, urban geological surveys, geological hazard monitoring, mobile seismic observation stations, oil and gas exploration, solid mineral exploration, and groundwater and geothermal resource exploration.

Main Features

* Supports the combined or separate acquisition of seismic data from natural and artificial sources;
* Supports 9 types of artificial source exploration methods: MASW, reflection, refraction, seismic tomograph, cross-hole, pile foundation, blasting, wave pulsed, and wave velocity;
* 4-component geophone: 3 low-frequency components (LX, LY, LZ) plus 1 high-frequency component (HZ);
* Using spread-spectrum technology, the 3 low-frequency components (LX, LY, and LZ) can be extended down to 0.2 Hz;
* Supports external seismic geophones; can be configured as a 4-channel seismic mainframe to connect to any seismic geophones within the supported bandwidth;
* Utilizing a variety of communication technologies, including NFC, Bluetooth, Wi-Fi, and 4G, to meet the needs of various applications;
* Utilizing a high-precision, low-noise chopping operational amplifier circuit and 32-bit AD conversion technology, the circuit noise is less than
0.8 μVrms at 500 SPS. It remains below the NHNM curve across the entire frequency range and below the NLNM curve from 5 s to 1 Hz;
* Using satellite-based time synchronization technology combined with a high-precision temperature-compensated clock, the device can operate continuously for 12 hours after a single synchronization and maintain clock synchronization, making it suitable for use in locations without network signals;
* Supports simultaneous charging and data transfer for up to 24 devices; data transfer rate per node ≥ 90MB/s; charging power per node≥ 60W;
* Comes with a built-in 64GB memory card, expandable up to 1TB

Details Display

Technical Specifications

Nodals

No.	Item	Parameter
1	Channel	4
2	Gain	1/4/16/64, accuracy 0.1%
3	A/D	32 bit
4	Sampling interval	31.2μs, 62.5μs, 125μs, 0.25ms, 0.5ms, 1 ms, 2ms, 4ms
5	Noise	Below the NHNM curve across the entire frequency range; below the NLNM curve from 5 s to 1 Hz; ≤1 μV rms at 2 ms at 0 dB
6	Analog input signal	±2 .5Vp-p
7	Channel amplitude consistency	≤2‰
8	Channel phase consistency	≤1us
9	Sensor bandwidth	0 .2Hz~450Hz
10	Sensitivity	200V/m/s(±10%)
11	Maximum tilt angle	±5°
12	Time synchronization accuracy	≤30ns
13	Data transmission	USB, WiFi, 4G, Bluetooth
14	Data storage	64GB, max 1 TB
15	Power supply	Built-in 120Wh Lithium battery
16	Size	φ130mm×160mm
17	Instantaneous dynamic range	≥120dB @2ms@0dB
18	Common-mode rejection	≥110dB@80Hz
19	Channel crosstalk	≤-100dB@80Hz
20	Channel bandwidth	DC~1.65KHz
21	Working temperature	-40ºC~+70ºC
22	Weight	2.8kg

About Us

 Chongqing Gold Mechanical & Electrical Equipment Co., Ltd
 

  Chongqing Gold Mechanical & Electrical Equipment Co., Ltd. is a high-tech enterprise specializing in the research, development, and sales of geophysical exploration equipment. For nearly 20 years since the establishment, we have developed various electrical, seismic, and magnetic methods equipment. In technologh we adhere to rigorous and innovative principles, consistently staying at the forefront of internationals. In production, we uphold strict and meticulous standards, resulting in product lifespans far exceeding those of similar products on the market. In sales, we uphold a customer-first, long-term development philosophy, consistently providing customers with high-quality pre-sales and after-sales support.