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Wenner Array Configuration
An electrode array is a configuration of electrodes used for measuring either an electric current or voltage. Some electrode arrays can operate in a bidirectional fashion, in that they can also be used to provide a stimulating pattern of electric current or voltage. Common arrays include: *Schlumberger (Wenner) *Wenner alpha *Wenner beta *Wenner gamma *Pole-pole *Dipole-dipole *Pole-dipole *Equatorial dipole-dipole Resistivity Electrical resistivity and conductivity, Resistivity measurement of bulk materials is a frequent application of electrode arrays. The figure shows a Wenner array, one of the possible ways of achieving this. Injecting the current through electrodes separate from those being used for measurement of potential has the advantage of eliminating any inaccuracies caused by the injecting circuit resistance, particularly the contact resistance between the probe and the surface, which can be high. Assuming the material is homogenous, the resistivity in the Wenner arr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wenner Electrode Array
An electrode array is a configuration of electrodes used for measuring either an electric current or voltage. Some electrode arrays can operate in a bidirectional fashion, in that they can also be used to provide a stimulating pattern of electric current or voltage. Common arrays include: *Schlumberger (Wenner) *Wenner alpha *Wenner beta *Wenner gamma *Pole-pole *Dipole-dipole *Pole-dipole *Equatorial dipole-dipole Resistivity Resistivity measurement of bulk materials is a frequent application of electrode arrays. The figure shows a Wenner array, one of the possible ways of achieving this. Injecting the current through electrodes separate from those being used for measurement of potential has the advantage of eliminating any inaccuracies caused by the injecting circuit resistance, particularly the contact resistance between the probe and the surface, which can be high. Assuming the material is homogenous, the resistivity in the Wenner array is given by: :\rho=2 \pi a \frac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
