VERFAHREN ZUR MESSUNG ELEKTRISCHER ODER MAGNETISCHER WECHSELFELDER UND ANORDNUNG ZUR DURCHFUEHRUNG DES VERFAHRENS.

摘要

The HF field measuring device has a magnetic field sensor (10) supplying a signal which is converted into an ultrasonic signal for transmission to a spaced receiver (30) via an ultrasonic transmission path (20) containing no metal components. Pref. the sensor (10) has a dipole (12) coupled to an ultrasonic transmitter (11) at one end of a non-metallic waveguide (24), with an ultrasonic receiver (31) at its opposite end. Pref. the waveguide (24) is made of a material with good acoustic characteristics and a low dielectric coefficient, container within an outer sleeve (26) of a material with high mechanical strength, with a sound insulator (28) between them.