Valve position indicator

Details Valve position indicator Valve position indicator

G - Physics

05

G

G05G 1/015 (2009.01) F16K 37/00 (2006.01) G08B 7/06 (2006.01) G05G 1/28 (2006.01)

Patent

CA 2133965

2133965 9322753 PCTABS00027 An actuator shaft (43) couples to a shaft (14) projecting from a valve or valve actuator (12) and to a drum (41) carrying graphics. As the actuator shaft (43) rotates, the graphics also rotate past a window (110) in a window member (42), the graphics indicating the valves position. The window member (42) couples to an alignment ring (78) keyed to receive the window member (42). Rotating the alignment ring (78) orients the window member (42) so the graphics are viewable from a preferred perspective. Each component is keyed to be constrained in a cartridge assembly (40, 41, 42) for quickly removal as a unit to access internal switches and circuitry (40), and quick reattachment while avoiding incorrect reassembly. An electronic display (49 of figure 1) provides a visual signal cooperating with the viewable graphic, and a visual error signal when the valve is in an abnormal position. Processing means (142 of Figure 13) intelligently control internal control elements (122) responsive to sensed parameters.

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