1. Choosing the right measurement process

The choice of measurement process is generally conditioned by :

• the characteristic to be measured ;

• the technologies available to access said feature;

• the time needed to obtain the result ;

• initial investment cost ;

• the cost of owning the process, i.e. direct costs (maintenance, consumables, connection) and indirect costs (immobilization of the process during operations, administrative costs or accounting management).

However, metrologists sometimes focus solely on "precision", usually given by the manufacturer. This term is not defined in the dictionary of metrology, the VIM (Vocabulaire International de la Métrologie). Even if common sense allows us to envisage the meaning...