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Geophysical equipment
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.
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 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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- Русский
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.
Getting started with 2D resistivity interpretation using RES2DINV
Submitted by landviser on Mon, 03/24/2014 - 19:27
Presentation, embedded below was developed to bring users up to speed in interpretation of their resistivity data. Class for end users was conducted in Indonesia and included training on field data collection with SibER-48 using ~ 900 m long profile in Wenner-Schlumberger and pole-dipole (remote electrode) 2D tomography. On the second day users received hands-on instructions on data import into RES2DINV software, quality assurance of the data based on visual approach as well as through RMS of the interpretation model.
General discussion about non-uniquness of the subsurface interpretation modl for 1D, 2D, and 3D representations has followed this class.
Slides can be viewed on http://www.slideshare.net/LarisaGolovko/training-on-res2dinv-and-siber48
Sign up for webinar "Application of Geophysical Methods to Agriculture: Methods Employed"
Submitted by landviser on Fri, 02/07/2014 - 19:17- Agriculture
- Farming
- Agrochemistry
- Precision Ag
- Soil Pollution
- Water Pollution
- Reclamation
- Environmental Science
- Geophysics
- Soil Science
- vertical electrical sounding
- LandMapper
- soil EC mapping
- ERM-01
- ERM-02
- GPR
- electrical profiling
- Geophysical equipment
- subsurface imaging
- four-electrode probe
- EC
- site assessment
- ER
- SP
- Geophysical
- iVES
- RES2DINV
- RES3DINV
- resistivity inversion
- freeware
- Ag Geophysics group
- EC
- mapping
- monitoring
- resistivity
- self-potential
Dr. Larisa Golovko (President of Landviser, LLC) will be presenting "Geophysical Methods of Electrical Resistivity and Self-Potential in Agriculture" in first of
Agricultural Geophysics Webinar Series: "Application of Geophysical Methods to Agriculture: Methods Employed"
A live webinar on the application of geophysics to agriculture will be offered on:
Tuesday, February 18, 2014, from 3pm - 4:30pm EST
(2:00 - 3:30 CST, 1:00 - 2:30 MST, 12:00 - 1:30 PST)
This first in a series of agricultural geophysics webinars will focus on the near-surface geophysical methods presently being used for agricultural purposes, which include resistivity, self-potential, electromagnetic induction, ground penetrating radar, dielectric sensors, VIS/NIR/MIR spectrometry, gamma ray spectrometry, mechanical soil compaction sensors, and ion selective potentiometry. Five presenters will provide a short overview of agricultural geophysical methods during the first 30 minutes of the webinar. The last hour of the webinar will be devoted to a panel discussion with the presenters, who will answer questions from the audience.
Location
28° 8' 11.7564" N, 90° 50' 5.8596" W
See map: Google Maps
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Happy New Year 2014 from Landviser LLC
Submitted by landviser on Tue, 12/31/2013 - 17:54Dear visitors, clients, collegues and friends!
Landviser LLC is wishing you Happy, Healthy and Prosperious 2014! Let all your ideas to develop into innovative products and services to create more Joy on our planet Earth and gain yet more understanding about our World. We continue to develop and test our equipment for different environmental applications in collaboration with leading research organizations worldwide. This year we would like to congratulate Department of Soil Physics and Reclamation in Moscow State University (M.V. Lomonosov), Faculty of Soil Science with 70th Anneversary:
Also, this year we added two innovative geophysical devices to our offerings in collaboration with OOO Electrometry and Gelion holding (Russia):
Electromagnetic multi-frequency profiler AEMP-14
Electrical tomography SibER-48 equipment
Do not hesitate to ask us about applications of geophysics in archaeology, agriculture, and environmental sciences. We are here to "Enlighten Your Research".
Locations
Landviser LLC
League City, TX
29° 32' 17.2716" N, 95° 4' 28.9776" W
See map: Google Maps
LandMapper in Antarctica
70° 13' 39.9468" S, 63° 59' 3.75" W
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Technical Specifications of LandMapper ERM-01
Submitted by landviser on Fri, 08/02/2013 - 18:54- · Range of measurements…...............…………………………………….………......................................ER= 0.1-1 106 Ohm m
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· Automatically adjusts electrical resistivity range to provide best measurement accuracy.
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AEMP-14 - Multi-frequency Electro-Magnetic Induction Sounding
Landviser, LLC is offering advanced equipment for multi-frequency electromagnetic sounding and profiling - AEMP-14 - manufactured by KB Electrometry Ltd in Novosibirsk, Russia.
Price of the system ordered through us is the same as listed on Nemfis.ru. Registered website users can view price of for the complete AEMP-14 system including field hand-held PDA, GPS, laptop with pre-loaded EM interpretation software and training videos in current catalog.
Please, request your personalized quotation from us: info@landviser.com or call 1-609-412-0555 / 1-888-306-LAND. The system is shipped worldwide from Russia, shipping costs will vary. See specification table at the bottom of this page on estimated weight of the system and components.
