All transducer types showed a hysteresis behaviour occurring from the viscoelasticity of the silicone tube
material. This hysteresis effect was known from previous measurements of cyclic loading and unloading the tube
and measuring its diameter with a LED micrometer (optoCONTROL 2600 from micro-epsilon) [1]. For example
transducer type V8 has shown a maximum hysteresis error of 1.13 fF indicating a maximal pressure error of
5.89 x 10³ Pa (cf. fig. 3 (b)), which is in agreement with the optical measurements of the diameter on this type of
tube.