Differential pressure sensors, control, and associated methods

A method comprising:

• coupling a first housing to a second housing, the first housing including a first port, the second housing including a second port;
• positioning a piston within the first and second housings, the piston to translate within the first and second housings;
• fluidly coupling a first location to a first port, first fluid to flow into the first port from the first location;
• and
• fluidly coupling a second location to the second port, second fluid to flow into the second port from the second location, the first and second fluids to cause movement of the piston, the movement of the piston corresponding to a differential pressure between the first and second locations.

An apparatus to measure differential pressure, the apparatus comprising:

• means for providing a first port fluidly coupled to a first location, first fluid to flow from the first location into the means for providing the first port;
• means for providing a second port fluidly coupled to a second location, the means for providing the second port coupled to the means for providing the first port, second fluid to flow from the second location into the means for providing the second port;
• and
• means for translating slidably disposed between the means for providing the first port and the means for providing the second port, the first and second fluids to cause movement of the means for translating, the movement of the means for translating corresponding to a differential pressure between the first and second locations.