Device for measuring distance between points separated by non-metallic mediun - has transmitter of alternating magnetic field with transmission coil, reception module with receiver coil and distance evaluation and display circuit

摘要

The arrangement for measuring the distance between points separated by a non-metallic medium contains a conventional oscillator circuit (1), an amplifier and rectifier circuit and conventional microelectronic distance evaluation and display circuits. A low frequency transmission module generating an alternating magentic field contains the oscillator circuit with a transmission coil (2). A spatially separate reception module contains a receiver coil (3). The transmission and reception coils have either common or parallel axes. USE/ADVANTAGE - Generally for simple, robust, reliable and economical length measurement under adverse external conditions, e.g. where the measurement points are in different spaces, e.g. separated by walls.