Inductive resisitivity measurement with AC-bridge apparatus

Puranen, R.; Puranen, M.; Sulkanen, K.

doi:10.1016/0926-9851(94)90012-4

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…In April 2005, indirect field measurements were performed using a Four electrode resistivity sensor (Conductivity fork, Puranen et al, 1999, CF_EC), capacitive probe 'Percometer' (Adek ltd, Estonia, P_EC) and a capacitive probe (BR-30, RISSAC, Hungary, 0.10 m). The Four electrode resistivity sensor shows electrical conductivity readings (CF_EC) (Puranen et al, 1999). Soil water content (WC) and permittivity (PERR) were measured with the BR-30 instrument and the Percometer.…”

Section: Methodsmentioning

confidence: 99%

Evaluating the sustainability of different soil tillage practices using field measured electrical properties

Farkas¹,

Ristolainen²,

Tóth³

et al. 2007

Cereal Research Communications

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Section: Methodsmentioning

confidence: 99%

Evaluating the sustainability of different soil tillage practices using field measured electrical properties

Farkas¹,

Ristolainen²,

Tóth³

et al. 2007

Cereal Research Communications

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“…So a simple and inexpensive experiment consisting in the determination of the effective magnetic susceptibility and in the contactless measurement of electrical resistivity is described below. In order to do this, an inductive method was applied using an ac bridge at low frequency and a weak magnetic field as noted by Puranen et al [15]. The measuring device presented in Figure 1 consists of five units: oscillator, bridge unit, lock-in amplifier, acquisition card associated to a computer, and conveyor belt.…”

Section: Rock Magnetic Susceptibility and Geological Impactmentioning

confidence: 99%

Radial Electrical Resistivity Measurements of Rocks on Laboratory Core Samples Using an Electromagnetic Sensor: Macro and Micro Eddy Currents

Aoun

Kouki

Aouina³

et al. 2018

Journal of Sensors

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Rocks subjected to weak alternating magnetic fields exhibit a magnetic hysteresis phenomenon due to the magnetic susceptibility and chemical composition of ferromagnetic or ferrimagnetic mineral grains. In order to characterize the physical properties of rocks, magnetic susceptibility and electrical resistivity measurements have been carried out. So a device has been developed in our laboratory as a highly sensitive sensor to measure the magnetic and electrical properties of rocks. This work deals with a nondestructive method to analyze these properties. A ballistic method has been considered by using a search coil in a sensitive alternating current bridge. Usually, the use of the complex ac magnetic susceptibility is convenient to reach the bulk magnetic susceptibility, where the imaginary component is often very weak and neglected. In this paper, we have considered this to determine the electrical resistivity of rocks.

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Frequency dependence and the electromagnetic susceptibility tensor in magnetic fabric studies — a discussion

Puranen

Poikonen

Puranen

1995

Physics of the Earth and Planetary Interiors

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Inductive resisitivity measurement with AC-bridge apparatus

Cited by 4 publications

References 4 publications

Evaluating the sustainability of different soil tillage practices using field measured electrical properties

Evaluating the sustainability of different soil tillage practices using field measured electrical properties

Radial Electrical Resistivity Measurements of Rocks on Laboratory Core Samples Using an Electromagnetic Sensor: Macro and Micro Eddy Currents

Frequency dependence and the electromagnetic susceptibility tensor in magnetic fabric studies — a discussion

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