Nonpolarizing electrodes

Dr. Simon Andras's Home page                             

Welcome!

I am senior geophysicist, Ph.D. of Earth Sciences. From 1964 to 2005 I had been working at the Eötvös  Lorand Geophysical Institute of Hungary (ELGI), in Budapest. In 2012 ELGI and GIH (Geological Institute of Hungary) had been incorporated under name GGIH (Geological and Geophysical Institute of Hungary).

In 1995 I started to work as geophysicist-entrepreneur as well. From 2005 to 2012 I had been working at the ELGI as contractor (geophysicist and quality assurance manager).

• WHAT I DO AS ENTREPRENEUR
  

Starting in 1995 I distribute (in Hungary and abroad) nonpolarizing electrodes PbPbCl (also known as "sensors" or E-field probes") of high quality, manufactured by WOLF Ltd in Hungary.

NONPOLARIZING ELECTRODES

Nonpolarizing electrodes are used in geoelectrical and electromagnetic surveying especially in magnetotelluric (MT), resistivity, induced polarization (IP), and spontaneous potential (SP) measurements.

In Figure 1. you can see the sketch of our nonpolarizing electrodes.  They are free of potentials caused by electrochemical action between the electrodes and the ground. Their cylindrical body is made of PVC. The body is filled up with lead chloride saturated hard gel and a lead spiral is cemented in it. 

NONPOLARIZING ELECTRODE, MEDIUM TYPE (Fig. 2.)
Main features
DC potential: a few mV
Contact resistance: 30-300 Ohm (for normal ground)
Surface of the bottom: 58 cm²
Surface of the Pb-spiral: 180 cm²
Mass: about 1 kg
Diameter (D): 90 mm
Height (H): 80 mm

NONPOLARIZING ELECTRODE, LONG TYPE (Fig. 2.)
Main fetures
DC potential: a few mV
Contact resistance: 50-500 Ohm (for normal ground)
Surface of the bottom: 27 cm²
Surface of the Pb-spiral: 180 cm²
Mass: about 0.7 kg
Diameter (D): 64mm
Height (H): 114 mm

NONPOLARIZING ELECTRODE, SMALL TYPE (Fig. 2.)
Main fetures
DC potential: a few mV

Surface of the bottom: about 7 cm²
Surface of the Pb-spiral: about 5 cm²

Diameter (D): 30 mm
Height (H): 50 mm

Temperature drift of the electrodes: about -0.1±0.01 mV/C^o, using between -10 - +50 C^o.

Self-noise level: 0.01- 0.001 mV .

Working life: 12-16 month (in case of careful using on the ground with normal conditions), not depending on the number of real mesuring days.

Connection: insulated copper or tinned copper wire (length 1- 2.5 m, core 0.75-2.5 mm²  - according to the order).
 

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Safety regulations: according to laws and regulations concerning to the manipulations of lead compaunds.

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Manufacturer:  WOLF Chemical Ltd                                                          H-1195 Budapest, Hofherr Albert u. 3-15 
Hungary 
Phone/Fax: (36 1) 282 8881
Email: wolf@wolf.hu
www.wolf.hu

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PURCHASING INFORMATION
Basic uniteprices: medium 70,    long 72.5,  small 65 EURO/piece

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The direction for use, storage and maintenance of electrodes you can read by clicking to Services above.

 Fig. 1. The sketch of nonpolarizing electrodes

Fig.2.: Nonpolarizing electrodes type medium, long, small and its carrying containers.

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Distributor: Dr. Simon András senior geophysicist entrepreneur                                                                                                    H-1221 Budapest, Ringló út 39.
Hungary
Phone:+36 1 2261870, 

 Mobile: +36 1 2123517

Fax:       +36 1 2261870          

Email: simandras@t-online.hu

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We deliver always newly manufactured electrodes. The buyer can receive at their address the electrodes within 3-4 weeks after receipt of the order by the distributor.

The page is under further construction

If you want to get some further information please contact the distributor.