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Geophysics
Frequently asked questions (FAQ) on electrical geophysical equipment and software
Submitted by landviser on Wed, 03/21/2012 - 16:57How to convert conductivity to resistivity?
Are there any difference between LandMapper ERM-01 and other equipment available on the market?
How your equipment calculates electrical resistivity?
How to calculate geometrical coefficient K?
Does electrical resistivity correlate with any soil properties?
Can your equipment measure electrical resistivity/conductivity in soil and water samples?
How to determine the depth of the measurements?
How to convert conductivity to resistivity?
Electrical resistivity (ER) is reciprocal to conductivity (EC) and results can be easily recalculated using formula EC=1/ER or vice versa ER=1/EC. Electrical resistivity is more convenient to use on non-saline soils, where conductivity can be mSm/m, while resitivity measures in 102-103 Ohm m range. 1000 Ohm m equals 1 mSm/m. You can find more conversions to ppm, TDS, grains of salt in this flyer.
Geophysical and Geostatistical Software
Landviser, LLC has developed a 1D interpretation software for soil vertical electrical sounding (iVES), which available for FREE download. We also an authorized distributor for a number of special software for interpretation of geophysical surveys such as RES2DINV and RES3DINV, resistivity inversion imaging by GEOTOMO Software (Malaysia); RadExPro, seismic interpretation by DECO Geophysical software company (Russia).
Current complete catalog of Landviser, LLC
RES2DINV and RES3DINV tech specs
Unique compact geophysical devices
Submitted by landviser on Fri, 03/09/2012 - 16:23
Landviser's products include portative devices for measuring electrical properties (electrical resistivity, conductivity, and potential) in soils, plants and other semisolid and liquid media. This equipment is small, fully computer-integrated, and easy to use. It is very competitively priced and come handy in many environmental and agricultural applications, including mapping of residential and commercial properties, construction sites, farms, and golf courses.
We can also help you with geophysical equipment and software distributed by our Partners. We develop and conduct online and in-person training classes for our clients and distributors. We sometimes offer used GPS units and geophysical equipment of other companies out of Landviser's inventory. Contact us for comprehensive help for your research and surveying needs.
LandMapper ERM-02 - new handheld EC/ER/SP meter
- Agriculture
- Precision Ag
- Civil Engineering
- Geology/Mining
- Geophysics
- Soil Science
- vertical electrical sounding
- LandMapper
- soil EC mapping
- arrays
- dipole-dipole
- ERM-02
- Schlumberger
- electrical profiling
- Geophysical equipment
- subsurface imaging
- four-electrode probe
- Geophysical methods
- EC
- site assessment
- ER
- SP
*We have a new bath of LandMappers ERM-02 in stock! Please, contact us info@landviser.com or +1-609-412-0555 / 888-306-LAND to discuss suitability of ERM-01 or ERM-02 for your applications. *******
LandMapper ERM-02 is a newest device in the product line of Landviser, LLC. This portative device can measure three important electrical properties of solid, semisolid, and liquid media: electrical resistivity (ER), conductivity (EC), and potential (EP). Using the most accurate four-electrode principle LandMapper ERM-02 measures ER or EC to help you to delineate areas with contrasting soil properties within the fields quickly, non-destructively, and cost-efficiently. Using the device prior to soil sampling you can significantly reduce the amount of samples required and precisely design a sampling plan based on the site spatial variability.
LandMapper ERM-02 measures electrical resistivity or conductivity of soils and related media for express non-destructive mapping and monitoring of agricultural fields as well as construction and remediation sites. In a typical setting, a four-electrode probe is placed on the soil surface and an electrical resistivity or conductivity value is read from the digital display. The device measures electrical resistivity or conductivity in a surface soil layer of the depth from 2 cm down to 20 m, which is set by varying the size of a four-electrode probe.
LandMapper ERM-02 is the most versatile device in LandMapper series and allows you not only measure ER and EC using artificially applied electrical current and four-electrode probes, but also study natural electrical fields in soils (self-potentials) and plants (bio-potentials) with patented non-polarizing electrodes. Electrical balance between soil and plants is important for plant health and electrical potential gradient governs water and nutrient uptake by plants. Monitoring of electrical potentials in plants and soils is a cutting-edge research topic in the leading scientific centers around the world.
Happy New 2017 Year!
Submitted by landviser on Sat, 12/31/2016 - 22:29
All of us at Landviser, LLC (USA) and IP GeoPro (Russia) are wishing our friends, collegues, customers and everybody else around the world Happy Holidays and a Great New Year! Looking forward to change, trust and fairness for all in 2017!!! We, as a small geo-consulting company, would continue to do our best in studying our Morther Earth and bringing Joy to the World!
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Happy New 2016 Year!
Submitted by landviser on Thu, 12/24/2015 - 20:23
All of us at Landviser, LLC (USA) and IP GeoPro (Russia) are wishing our friends, collegues, customers and everybody else around the world Happy Holidays and Great New Year!
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Happy New Year 2015!
Submitted by landviser on Tue, 12/30/2014 - 18:25|
Landviser wishes all our clients, colleagues and friends happy holidays, as well as healthy and prosperous New Year! |
Желаем всем нашим друзьям и коллегам веселых праздников, а также счастья, здоровья и успехов в Новом Году! |
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Landviser now offers complete line of electrical geophysical equipment and software: from our exclusive simple hand-held resistivity and self-potential meters, LandMappers, to the most sophisticated 16-channel, 64-electrode automatic RES/IP tomography set, SibER-64! Also:
GPS data loggers: cost-effective rugged data loggers, inclinometers, distance scanners and cameras from F4Devices
GIS & Geophysics consulting: on-site and remote classes and support available worldwide
Customized Solutions: No project is too big or too small!
Call: +1-609-412-0555 or 888-306-LAND
Email: info@landviser.net Web: www.landviser.net
Landviser, LLC (USA) is authorized distributor for KB Electrometry (Russia), GeoTOMO Software (Australia/Malaysia) and F4Devices (USA)
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METHODS
Submitted by landviser on Tue, 09/02/2014 - 20:05This page provides quick links to the pages on this site describing methods we imploy in our consulting: electrical geophysical methods with our equipment and software, field data collections with various GPS units, analysing data with statistical and geostatistical techniques, building enterprise GIS with commercial and freeware.
Geo-Equipment
Submitted by landviser on Fri, 08/29/2014 - 20:47Landviser develops and sells unique hand-held geophysical devices and powerful electrical geophysical equipment. We are collaborating with KB "Electrometry", Russia and GeoTOMO Software, Malaysia.
