Technical information

UFFICIO TECNICO

MANUALI

ML2

ML200 INGLESE

(POS. 18) Acceleration threshold [SKIP THR=% XXX]

Acceleration threshold set. The acceleration threshold stands for the limit beyond which a flow rate variation

determines an immediate response at the output, without being filtered by the time constant. This system allows the

instrument to have an immediate response in case of big variations of the flow rate, filtering (and delaying) the

response to small variations. The result of that is a very stable measure, ready to follow the process. The value is set

as percentage of the full scale value from 0 to 125%. If such a value is set to zero any flow rate variation bigger than

0.5% of the full scale value will immediately effect the outputs.

The following diagram shows the instrument response in two cases: a flow rate variation from 0 to 10% completely

absorbed by the time constant effect and a variation form 10% to 100% exceeding the acceleration threshold and

then immediately sent to the output. In actual fact there is always a minimum time between the measure acquisition

and the outputs update. For the ML190 and ML200 this time in the worst case is around 140 ms as far as the 0/4…20

mA output is concerned.

100

PORTATA

MISURA