A study of an individual application
can help greatly in focusing on the precise requirements. These might
be related to sensor specification, operating environment and almost
certainly cost. Different technologies would be considered
existing commercial sensors within those groups. The nature of
measurement and interfering effects
can help in eliminating inappropriate choices. Where a commercial
device cannot be identified a bespoke sensor design may be suggested.
An analysis of the science involved with the measurement is normally
quite revealing and will often lead to a tailored solution.