US 12,031,640 B2
Methods and apparatus for power selection
Kurtis Jensen, Marshalltown, IA (US); William Sean Raymond, Toledo, IA (US); Eric Strong, Marshalltown, IA (US); and Gregory W. Jacobs, Marshalltown, IA (US)
Assigned to FISHER CONTROLS INTERNATIONAL LLC, Marshalltown, IA (US)
Filed by FISHER CONTROLS INTERNATIONAL LLC, Marshalltown, IA (US)
Filed on Feb. 24, 2021, as Appl. No. 17/184,091.
Prior Publication US 2022/0268370 A1, Aug. 25, 2022
Int. Cl. F16K 37/00 (2006.01); F16K 31/42 (2006.01)
CPC F16K 37/0083 (2013.01) [F16K 31/42 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for performing a diagnostic task, including:
evaluating a first power source to determine if the first power source is available, the first power source corresponding to a first output of a first limit switch, the first limit switch to detect that a valve is in an open position;
evaluating a second power source to determine if the second power source is available, the second power source corresponding to a second output of a second limit switch, the second limit switch to detect that the valve is in a closed position;
upon determining that a power source of the first and second power sources is available, selecting the power source;
providing power from the selected power source to a sensor; and
performing the diagnostic task based on an input from the sensor.