GT-CEW regular electrical method workstation is a combination of mature AC excitation polarization method (frequency domain induced polarization) and DC excitation polarization method (time domain induced polarization) theory, using 32-bit A/D high-precision high-speed over-sampling recording technology, modern digital signal processing technology, embedded real-time operating system technology, large-scale field programmable array logic technology and other new electronic technology developed by the AC excitation polarization method and DC excitation polarization method as one of the new generation of electrical instruments. The following figure shows the complete GT-CEW regular electrical method workstation, including the GT-CEW time-frequency excitation meter host, handheld telemetry terminal, MSU-10A transceiver separation cascade electrode converter.
The system uses a GT-CEW time-frequency excitation meter as the measurement and control host (hereinafter referred to as the GT-CEW host), and realizes two-dimensional ordinary high-density resistivity measurement, high-density DC IP measurement, high-density phase IP measurement (an efficient IP test method) and dual-frequency IP measurement by selecting different multi-channel electrode converters and supporting cables such as MSU-10A, MSU-4A, MSU-10B, MSU-4B, and MSU-24B.
Product use:
This instrument can carry out all regular electrical tests, and can carry out two-dimensional and three-dimensional high-density electrical tests. The main uses are as follows:
◆ Environmental geological survey of underground soil and water pollution;
◆Geological survey of karst cavity landslide and other disasters;
◆Urban underground space structure distribution and stability evaluation;
◆Metal mineral exploration;
◆Coal field goaf detection;
◆ Groundwater survey;
• Archaeology;
◆ Detection of the dripping range of the landfill site;
◆ Detection of leakage and cavity in reservoir and river dam embankment.
Product features:
◆ Time-domain and frequency-domain dual-domain exciter-That is, it has the function of regular DC IP instrument, and also has the function of single-frequency AC IP (phase IP) and dual-frequency AC IP instrument with strong anti-interference ability.
◆ Many measurement parameters-Voltage, current, visual resistivity, mean square error, natural potential, self-elevator degree, visual polarization rate, video dispersion rate, visual phase, visual phase difference, metal factor, half-decay, attenuation, excitation ratio, deviation, ground resistance and voltage attenuation curve (I. e. time domain electrical spectrum data).
◆Large power supply, wide range, high precision measurement-Up to 9000W power supply capacity, 200Vp-p ultra-wide voltage input range, 1uV potential repetition accuracy; Using analog and digital multi-stage high precision filtering, signal enhancement technology and strong noise suppression technology to obtain extremely high small signal measurement accuracy, the instrument can be better applied to work in high resistance areas and obtain more stable and accurate measurement results.
◆ High-speed full-wave train acquisition and storage-Both the transmitting current and the receiving potential are synchronized with the full waveform acquisition at the sampling rate of 1kHz, which can monitor the external free electrical interference in real time, and the secondary calculation of the polarization rate of the full waveform potential in any time period can be carried out by the upper computer software in the later period.
◆ Visible by direct strong light in the field-It adopts high-brightness 24-bit true color LCD large screen, clearly visible under direct sunlight, full Chinese man-machine interface, fast and intuitive collection parameter setting, data display and storage, various curve drawing, etc.
◆ Light and flexible-It integrates high-power transmission and high-precision reception functions, small size and light weight; it is equipped with "three-pole B", which is used for joint profile method and joint sounding method, and can automatically measure ρSAand ρSB, No need to manually switch, improve measurement efficiency; you can check the grounding of AB electrode and MN electrode at any time, which is convenient and practical.
◆ Large capacity intelligent battery-The instrument is built-in imported intelligent lithium battery, which can read temperature, capacity, health status and other information, and can last for 16 hours after being fully charged.
◆ Self-renewal and self-test ability-After the instrument copies the latest installation package through the U port, it can automatically update the latest application program when it is turned on. The intelligent diagnostic program can quickly and accurately check whether the voltage, polarization rate and current acquisition of the instrument are normal.
Compliance with specification:
◆ Code for Geophysical Exploration of Hydropower and Water Conservancy Engineering DL/T 5010-2005
◆ SL326-2005 of Geophysical Prospecting Regulations for Water Conservancy and Hydropower Engineering
◆ Technical Specification for Geophysical Prospecting of Electric Power Engineering DL/T 5159-2012
◆ Code for Geophysical Exploration of Highway Engineering JTG/T C22-2009
◆ Code for Geophysical Exploration of Underwater Engineering DB34/T 2209-2014
◆ Standard for Urban Engineering Geophysical Exploration CJJ/T 7-2017
◆ Specification for Global Positioning System (GPS) Surveying (GB/T18314-2001)
◆ Technical Specification for Resistivity Sounding Method
◆ Technical Specification for Resistivity Profile Method
◆ Technical Specification for Time Domain Excited Polarization Method DZ/T 0070-2016
Performance parameters:
(Note: the parameters are for reference only, customized products can be adjusted according to customer needs)
Engineering case:
Note: The above data and configuration are for reference only. This series of products may be adjusted according to different configurations or different customer usage scenarios, resulting in differences. The specific data shall be subject to the actual products provided, and the final interpretation right shall be owned by Wuhan Jietan Technology Co., Ltd.
