EEN INRICHTING VOOR HET LEVEREN VAN EEN UITGANGSBESTURINGSSIGNAAL, WANNEER EEN INGANGSSIGNAAL MET EEN SNELHEID VERANDERT, DIE GROTER IS DAN EEN VOORAF VASTGESTELDE SNELHEID.

摘要

An electronic system and method suitable for initiating the functioning of power operators for one or more flow control valves, responsive to controlling input signals. The controlling signals may be derived from or responsive to operating conditions of the system with which the valve is associated, such as a pressure drop in the line with which the valve is associated. The electronic system initiates operation of the valve responsive to such signals and serves to effect operation of the valve in a predetermined manner or according to a predetermined program, e.g., to close the valve when a pressure drop occurs at a rate greater than a predetermined value.