LandMapper® ERM-01

Throw away your augers and soil samplers! Well, not quite. LandMapper ERM-01 is here to help you 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 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 value is read from the digital display. The device measures electrical resistivity 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.

Key Features

Compact and portable design (weights only 250 g without the probe)



Fast (one measurement takes 5 sec.)



Accurate (automatically accounts for spontaneous potential arising from grounding of the electrodes)



Safe and economical (uses a standard 9 V battery)



Seamless connection with personal computer for data transfer (stores 999 data values)



Modular and interchangeable the 4-electrode probes and detachable measuring unit



Versatile (the same unit can be used in field mapping and laboratory experiments)



Affordable (enquire about our very competitive prices and available discounts)




This equipment measures potential difference, which arises between two electrodes (M and N), when electrical current (I) is applied to two other electrodes (A and B) as in well-known in geophysics four-electrode principle. Device than calculates electrical resistivity from the voltage/current measurements and supplied geometrical coefficient. Direct output from the LandMapper ERM-01 is electrical resistivity in Ohm m, which is easily converted into electrical conductivity (S m-1) by data post-processing.



Advanced scientific research supports versatile applicability and usefulness of the equipment. This equipment is a product of 20 years intense research on electrical fields in soils, applications of electrical resistivity measurements in soil science and electrical geophysical data interpretation. So far, more than 10 dissertations and five books were published on the topic in Russia and USA.


Applications of the equipment

Mapping of soil surface electrical resistivity or conductivity, which is shown to be related with soil texture, salinity, stone content, and pollution by oil products, etc.



Measuring electrical resistivity in soil pits to better diagnose genetic horizons.



Possibility to monitor electrical resistivity distribution in soil profiles without excavation to study freezing-melting, drying-wetting, and solute redistribution processes.



Measuring electrical resistivity in soil columns in model experiments to account for spatial variability and to outline solute flow.



Measuring electrical resistivity of liquids, solid, and semisolid media, such as soil samples, pastes, and slurries; wood; food; and others.

Contact us at Dextol Global Geophysical for your order and after sale support at same price as from manufacturer, Landviser LLC USA.
08060689660
www.dextolgbgeo.com

LandMapper® ERM-02

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

Don’t break your back collecting soil samples. Reduce amount of samples sent for laboratory analysis and save money. And still make detail soil map of your fields, which will be more accurate than conventional soil surveys. Impossible? Not at all with Land-Mapper ERM-02.



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 30 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 and plants 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.

Accurate (Automatically adjusts electrical resistivity/conductivity/potential ranges to provide best measurement accuracy >99%)

ER= 0.01-1 106 Ω m

EC= 1 10-6 – 10 S m-1

EP = -1 to +1 V (0.01 mV)

Contact us at Dextol Global Geophysical for your order and after sale support.
08060689660
www.dextolgbgeo.com

Call Dextol Global Geophysical today
08060689660
www.dextolgbgeo.com

We offer agriculture solutions that you may find useful for your soil testing product and service or other agriculture business.

Find us online and register on:
www.agriki.com.ng

Agriki:
We offer agriculture solutions that you may find useful for your soil testing product and service or other agriculture business.

Find us online and register on:
www.agriki.com.ng

Noted

Electrical Resistivity Survey Carried Out By Ebonyi State Rural Water Supply

Since the introduction, their has been a wide variety of VES arrays which were developed by the (Keller and Frischknecht in 1966), but when Schlumberger had array remained which was seen as the best of all array due its depth sounding.

However, the application from the VIES techniques were they are, until recently they have been limited to the shallow investigations they have been relegated to, this because the electronic measuring devices was never sufficient sensitivity were never available except for the bulky forms, and that was also partly because the deeper the penetration the wider the variety of the resistivity layers the possibly the incorporated in a set of a standard resistivity curves.
http://www.prestnaija.com/technical-report-electrical-resistivity-survey-carried-ebonyi-state-rural-water-supply/