Ormal Electronics Limited
Hotel, Manor Farm
Queens Road, Hannington
Swindon, Wiltshire
SN6 7SY, UK.
Hotel, Manor Farm
Queens Road, Hannington
Swindon, Wiltshire
SN6 7SY, UK.
Vibetek Data:
Introduction
All Vibetek cables utilise the piezoelectric effect, discovered in 1880 by the famous French physicist Pierre Curie and his brother Jacques. Piezoelectric materials have the interesting property of converting mechanical energy into electrical energy and vice versa. Most piezoelectric materials are hard and brittle; examples are crystal quartz and certain ceramics such as lead zirconate titanate (PZT). However, about 30 years ago it was discovered that certain thermoplastics could be processed to make them piezoelectric. This meant that flexible piezoelectric sheet, film and cables could be made, so paving the way for the development of the Vibetek range of microphonic sensor cables in the 1980s. Vibetek cables are coaxial in configuration and use polyvinylidene fluoride (PVDF) as the dielectric between the inner core and the outer braiding. The cable effectively behaves as an extended microphone, converting stress, strain, vibration, impact, sound or pressure change into minute electrical signals.
As with all piezoelectric sensors, Vibetek displays a linearly increasing electrical output as the level of mechanical disturbance increases, and will monitor signals ranging in frequency from a few mHz to hundreds of kHz or more.
Schematic
of
Vibetek cable construction
of
Vibetek cable construction
