The measurement of some properties requires the ability of the Texture Analyser to perform a hold period. This involves the application of either a specified force or specified probe position for a set period of time. Force hold periods are usually controlled by a PID (proportional, integral, differential) feedback loop, with PID settings adjustable by the user for the optimisation of the hold plateau, making it as smooth and uniform as possible. Below shows graphs recorded from two adhesive tests carried out with optimised and non-optimised PID control settings. After optimisation, the hold period is distinctly more uniform, giving a more reliable hold force.
