There is provided a measurement apparatus for measuring a pressure difference of a fluid between a first position and a second position in a flow passage of the fluid, the measurement apparatus comprising a first pressure sensor which is provided at the first position and which outputs a first electric potential corresponding to a pressure of the fluid, a second pressure sensor which is provided at the second position and which outputs a second electric potential corresponding to a pressure of the fluid, and an electric potential difference detection unit which detects an electric potential difference between the first electric potential and the second electric potential, and converts the electric potential difference into the pressure difference.