Langeo Company Limited

shenzhen, China

Wdds-3 digital d.c. Resistivity meter is a new generation of dc resistivity equipment which is based on a series of advanced electrical equipment for resistivity sounding survey, and adopts 32-bit microcontroller technology and 24-bit a d technology development. Power: 3500w, 1000v(2000vp-p), 3.5a (over-current protection) function: sp survey, 1d ves(resistivity) applications: • metal and nonmetal mineral resources detection • city geophysical exploration, railway and bridge inspection and so on • hydrology and engineering geology as seeking for ground water, inspecting dam base and flood protection levee for incipient faults • geothermal prospecting

Wdjd-4 resistivityip meter designed the receiver and the transmitter in one unit, which support 1d resistivity and 1d induced polarization ves survey;it features multiple functions, high accuracy, fast speed, high reliability and excellent expandability. Measured data of wdjd-4 can be processed by other multi-electrode resistivity software, which makes the interpretation more convenient. functions: • 2d multi-electrode resistivity tomography • ves - vertical electrical sounding ( resistivity and ip) • rp - resistivity and ip profiling • sp - self potential applications: • metal and nonmetal mineral resources detection • city geophysical exploration, railway and bridge inspection • hydrology and engineering geology as seeking for ground water, inspecting dam base and flood protection levee for incipient faults • geothermal prospecting • landslides and other geological disaster exploration

Wda-1wda-1b super digital dc resistivityip meter is developed basing on years’ experience of studying and manufacturing advanced electrical resistivity instruments. It's leading technical characteristics and function are much superior to the instruments of its kind worldwide. The mainframe, wda-1wda-1b super digital dc resistivityip meter, is a newly developed electrical method instrument, adopting many advanced technologies such as tablet pc, 24bit ad, and high power control. It features compact size and lightweight. It's main performance and functions are better than its similar products at home and abroad. Functions: • self-potential survey • general resistivityip ves survey • multi-electrode 2d resistivity imaging • multi-electrode 2d induced polarization (ip) imaging • multi-electrode 3d resistivity imaging applications: • energy resource • city geophysical exploration • railway and bridge prospecting • metal and non-metal mineral resources prospecting • city geophysical exploration • hydrology and engineering geology to inspect base of dam and flood protection levee for incipient faults • geothermal survey • landslides and other geological disaster exploration

Wgmd-60 is the new developed two dimensional resistivity imaging (ert) system, which integrated electrode switching and 200v transmitting high power in the mainframe. It support max 60 electrode switching.the whole system features light weight and high stability. functions: • 2d multi-electrode resistivity imaging (max 60 pcs electrode) • ves- vertical electrical sounding (resistivity and ip) • rp - resistivity and ip profiling • sp - self potential internal switcher & internal high power: for traditonal 60 electrode centralized system, it need to work with the external switcher box and external power source. applications: • groundwater exploration • geotechnical investigations • engineering geological exploration as factory foundations, highways, bridges, railways, civil engineering, hydrology, engineering, environmental, dam • pollution plumes mapping • geological surveys • mineral prospecting as metal (gold, copper.) and non-metallic resource(coal ..) • archaeology explration • landslides and other geological disaster exploration • detecting of cavities, underwater, borehole and cross-hole measurements

Wcz-3 is a the latest developed 3rd generation proton-precession magnetometer with the 32 bit scm technology. it features with multi-functions, fast measuring speed, high gradient range and much light. It integrated with gps positioning module and gps adapter. Magnetic measurement precision is ±1nt and resolution reaches 0.1nt. applications: • mineral survey, such as iron ore, lead-zinc ore, cupper ore • mineral prospecting, mineral ore depth, orientation, and continuity, ore shape, size and scale • oil, natural gas survey, related geological structure. • general survey and local survey, geological mapping • base station for aerial and marine magnetic survey • fault detection. • archaeology. • hydrogeology. • engineering survey, such as pipe finding. • monitoring earthquake auspice, volcano and other environmental disasters. • locating buried ferrous containers (ex. Contaminant waste drums) in environmental surveys. • uxo detection • locating and tracing buried pipelines in utility-type surveys.

Wcz-1b proton magnetometer is a upgrade model base on wcz-1, which has a more compact design and internal battery. Magnetic measurement precision is ±1nt and resolution reaches 0.1nt. Boasting large storage, high resolution, and flexibility, wcz-1b can measure total field intensity, horizontal or vertical gradient component with resolution of0.1nt by altering sensor structure. applications: • mineral survey, such as iron ore, lead-zinc ore, cupper ore • mineral prospecting, mineral ore depth, orientation, and continuity, ore shape, size and scale • oil, natural gas survey, related geological structure. • general survey and local survey, geological mapping • base station for aerial and marine magnetic survey • fault detection. • archaeology. • hydrogeology. • engineering survey, such as pipe finding. • monitoring earthquake auspice, volcano and other environmental disasters. • small ferrite body finding.

WTEM-2 Medium-DeepDeep TEM Exploration System is applicable to medium-deepdeep transient electromagnetic exploration. It features high power, short turn off time, high reliability, strong anti-interference performance, lightweight and low power consumption. The system composed of WTEM-2J TEM Exploration System Receiver, WTEM-2D60 High-power Transmitter, WTEM-2TGPS Transmitter Synchronized Controller, the PTT-40A Antenna & Adapter and one Touch pad. According to different geological situations, user could choose an appropriate system to finish surveying tasks of quick general survey, 3D graph coloring up, deep mine finding. It is mainly used for surveying metal mine, coal-mine, oil and gas field, geothermal field, and applies in hydrology and engineering geological prospecting as well.

This system is one of our latest researchers, with all functions and advantages of domestic and oversea shallow transient electromagnetic survey systems, integrated with wtem-1jgps tem system receiver and wtem-1x low-power transmitter. It features high transmitting power, short turn-off time, high reliability, strong anti-interference performance (atmospherics, 50hz or 60hz industrial frequency interference), lightweight and low power consumption. According to different geological situations, user could choose an appropriate system to finish surveying tasks of quick general survey, 3d graph coloring up, stereo mapping, deep mine finding and shallow sounding. applications: • geothermal investigation • metal mine, coalmine • oil and gas field, geothermal field • hydrology investigation • engineering geological prospecting

Wzg-6a12a is a 24-bit wave velocity tester, under windows operation system, based on wzg-24 engineering seismograph. It features multiple function, high precision, high speed, high reliability and fine expansibility. Industrial pc or notebook pc is required to collect data through usb interface; built-in rechargeable battery ensures the instrument to work for over 8 hours. Seismic source for testing may be hammer, electric spark or explosion, extremely fitted for sheared wave velocity test, surface wave exploration, pier foundation test, ground micro-tremor measurement, seismic imaging, shake measurement, and refraction or reflection survey. applications: it applies to engineering geological prospecting, in various fields such as hydrology, electricity, railway, bridge, city construction, traffic, etc, and in petroleum, coal, uranium and groundwater exploring. functions: • wave speed (sheared wave) survey • transient multifold rayleigh wave prospecting • multi-wave high density seismic imaging • shallow refraction survey • foundation pile inspection • civil engineering quality detection • site constant shake survey • shake-to-blasting survey

WDDS-3 digital D.C. resistivity meter is a new generation of DC resistivity equipment which is based on a series of advanced electrical equipment for resistivity sounding survey, and adopts 32-bit microcontroller technology and 24-bit A D technology development. Power: 3500W, 1000V(2000Vp-p), 3.5A (over-current protection) Function: SP survey, 1D VES(Resistivity) Applications: • Metal and nonmetal mineral resources detection • City geophysical exploration, railway and bridge inspection and so on • Hydrology and engineering geology as seeking for ground water, inspecting dam base and flood protection levee for incipient faults • Geothermal prospecting