{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8521442","patent":{"patent_number":"US-8521442","title":"Method and device for measuring the electrical conductivity and/or resistivity of a solution","assignee":null,"inventors":[],"filing_date":"2008-12-12T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["G01N"],"num_claims":32,"abstract":"An exemplary method for measuring the electrical resistance and/or electrical conductivity of solutions, includes: exciting the electrodes with a rectangular shaped, alternating current of a certain frequency fH through a connecting cable; synchronously rectifying a voltage of the electrodes of the measuring cell in response to the alternating current, calculating a first average voltage, dividing the first average voltage by the current amplitude to obtain a first impedance RH; then exciting the electrodes with a rectangular shaped, alternating current of another frequency fL through the connecting cable; synchronously rectifying the voltage of the electrodes in response to the alternating current, calculating a second average voltage, and dividing the second average voltage by the current amplitude to obtain a second impedance RL. Based on a mathematical model, a relation between the resistance R between the electrodes to be measured and the first and second impedances RH and RL, and the ratio n of the frequency fH to fL is established, so as to derive the resistance R between the electrodes. The conductivity of the solution can be derived by incorporating an electrode constant."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and device for measuring the electrical conductivity and/or resistivity of a solution","description":"An exemplary method for measuring the electrical resistance and/or electrical conductivity of solutions, includes: exciting the electrodes with a rectangular shaped, alternating current of a certain f","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8521442","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8521442","citation_suggestion":"Patentable. \"Method and device for measuring the electrical conductivity and/or resistivity of a solution\" (US-8521442). https://patentable.app/patents/US-8521442","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8521442","json":"https://patentable.app/api/llm-context/US-8521442","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:11:24.339Z"}