Answer Posted / syed waseem,dubai petroleum,ua

A transmitter is a device which converts physical quantity
(eg:flow,pressure,temperature and level) into electrical.
i.e 4-20 ma universal standard.
Pressure tranmitter converts the pressure in a vessel or in
a pipeline into electrical quantity.
for eg: a pressure tranmitter range is 0-200psi.
at 0%-4ma-0psi.
25%-8ma-50psi.
50%-12ma-100psi.
75%-16ma-150psi.
100%-20ma-200psi.

dear sir we have insatlled positioner model no.sipart PS2 make Siemens at our control valves . now problem is if we want to increase the response of valve opening speedy /fast. what parameters do we change for positioner ? any idea. please guide us.

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