Electricity: measuring and testing – Conductor identification or location – Inaccessible
Patent
1984-11-08
1987-02-24
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Conductor identification or location
Inaccessible
324376, 324444, G01R 2726
Patent
active
046460004
ABSTRACT:
A method for measuring soil salinity measures the low frequency permittivity of a soil sample at one or more frequencies below 2 megahertz and determines the salinity of the soil sample based on the measured real part of the permittivity. Apparatus for performing the method comprises a soil sample holder for laboratory measurements or a four electrode array for measuring soil salinity in situ. An electrical circuit measures the low frequency permittivity of the soil sample and converts the measured permittivity to the salinity of the soil sample. The salinity conversion can be performed by a read-only memory or a computer with the output being registered by display on a digital or analog display or storage in a data memory.
REFERENCES:
patent: 2076441 (1937-04-01), Berry
patent: 2942176 (1960-06-01), Brownscombe
patent: 3448381 (1969-06-01), Perry
patent: 3500182 (1970-03-01), Reed et al.
patent: 3501692 (1970-03-01), Kluck
patent: 3713022 (1973-01-01), McRay
patent: 3720890 (1973-03-01), Anderson
patent: 3782179 (1974-01-01), Richards
patent: 3959723 (1976-05-01), Wagner
patent: 4070612 (1978-01-01), McNeill et al.
patent: 4181881 (1980-01-01), Preikschat
patent: 4236109 (1980-11-01), Ingle, Jr.
patent: 4319185 (1982-03-01), Hill
patent: 4322678 (1982-03-01), Capots
patent: 4341112 (1982-07-01), Mackay et al.
patent: 4364008 (1982-12-01), Jacques
Benin: "A Frequency Dielectric Method of Determining Salt Contents . . . ", Measurement Techniques-Oct. 74-pp. 1589-1592.
Topp: "Electromagnetic Determination of Soil Water Content . . . "-Water Resources Research-vol. 16, No. 3, pp. 574-582, Jun. 1980.
Chernyak: "Dielectric Methods for Investigating Moist Soils"-Geological Committee of the USSR, (VSEGINGEO)-1964.
Wait: "Note on Determining Electrical Ground Constants . . . ", J. Appl. Physics.-vol. 43, No. 3, Mar. 1972.
Rhoades: "Monitoring Soil Salinity . . . ", American Water Resources Asso.-1978 Symposium-Jun. 12, 1978.
Eisenzopf Reinhard J.
Solis Jose M.
The Yellow Springs Instrument Company
LandOfFree
Method and apparatus for measuring soil salinity does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for measuring soil salinity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for measuring soil salinity will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-110933