{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9823276","patent":{"patent_number":"US-9823276","title":"Process control loop current verification","assignee":null,"inventors":[],"filing_date":"2012-05-29T00:00:00.000Z","publication_date":"2017-11-21T00:00:00.000Z","cpc_codes":["G05B","G08C","H04Q","G05B","G05B","G05B","G05B","H04Q"],"num_claims":15,"abstract":"Some embodiments are directed to a process device comprising a process variable sensor configured to generate an output signal indicative of a sensed process variable; loop current output circuitry configured to control a loop current on a two wire process control loop to a value based on the output signal; loop current measurement circuitry coupled to the process control loop and configured to generate a measured loop current value based on the loop current; and loop current verification circuitry configured to approximate the loop current value based on the output signal and properties of a low pass filter, and generate a diagnostic signal based on a comparison of the approximated loop current value and the measured loop current value."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Process control loop current verification","description":"Some embodiments are directed to a process device comprising a process variable sensor configured to generate an output signal indicative of a sensed process variable; loop current output circuitry co","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9823276","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-9823276","citation_suggestion":"Patentable. \"Process control loop current verification\" (US-9823276). https://patentable.app/patents/US-9823276","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9823276","json":"https://patentable.app/api/llm-context/US-9823276","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:42:47.225Z"}