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Related Experiment Videos

A precision isotonic measuring system for isolated tissues.

P M Mellor

    Journal of Pharmacological Methods
    |December 1, 1984
    PubMed
    Summary
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    This study introduces a new isotonic measuring system using a linear differential voltage transformer. The system offers improved mechanical design and electrical accuracy for precise angular position measurement.

    Area of Science:

    • Engineering
    • Instrumentation
    • Measurement Science

    Background:

    • Existing isotonic measuring systems often face challenges with corrosion, solution ingress, and setup complexity.
    • Electrical performance limitations such as accuracy, linearity, and drift are critical in precise measurement applications.

    Purpose of the Study:

    • To develop and describe an isotonic measuring system with enhanced mechanical and electrical specifications.
    • To present a novel housing design and control unit for a linear differential voltage transformer-based angular position transducer.

    Main Methods:

    • Utilized a linear differential voltage transformer as the core angular position transducer.
    • Engineered a specialized housing to address mechanical challenges like corrosion and solution ingress.

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  • Developed a control unit with power supply and electronic filtering for transducer operation.
  • Designed the system for direct compatibility with chart recorders.

    • Main Results:

    • The developed system demonstrates robust mechanical design, ensuring resistance to corrosion and protection against solution ingress.
    • Achieved high electrical performance, characterized by accuracy, linearity, and minimal drift.
    • The transducer's output voltage is sufficient for direct connection to low-sensitivity chart recorders.
    • Fifty units have been successfully deployed and utilized for up to four years.

    Conclusions:

    • The described isotonic measuring system, based on a linear differential voltage transformer, provides a reliable and accurate solution for angular position measurement.
    • The specialized housing and control unit enhance durability and ease of use, making it suitable for long-term laboratory applications.