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:
The sensitivity of Vibetek shows very little temperature dependence over the range -40°C to +65°C - see the graph below. The cables have been in use Worldwide for many years, in locations ranging from the Tropics to the Arctic. However, like all piezoelectric materials, the piezoelectric properties can be destroyed by excessive temperature. With Vibetek, care should be taken to avoid heating the cable for long periods above about 70°C, as there will be some permanent loss of sensitivity at these temperatures. For example, there is typically a loss of about 15% in the hydrostatic sensitivity of Vibetek 3 after a cable has been heated at 80°C for 1 hour, after which the sensitivity stabilises at its new value. Further temperature increase will produce more sensitivity loss, until eventually all of the piezoelectric output is lost.
At low temperatures (<0°C) a slight temporary increase in sensitivity is observed. No permanent damage will be caused by temperature excursions below -40°C, although the jacket will have stiffened considerably and may be susceptible to mechanical damage.
For further information, please contact Ormal Electronics.
Temperature of cable in °C
Hydrostatic Sensitivity
as a
Percentage of
Sensitivity at 20°C
as a
Percentage of
Sensitivity at 20°C