Foxboro SRD991-BQNS7EDANR-1FF16V06G Intelligent Positioner, Double Acting, Input/Communication (4 - 20 mA), Built-In Inductive Limit Switch, Intrinsically Safe, M20x1.5, EA4, II2G Ex ia IIC T4 Gb, Atex IECEx, LCD, HS Code 903289, weight 2 kg, مناور, kedudukan, پوزیشنر, позиционер, catalog data sheet