In 1930, Graeff invented the first pressure sensor conversion mechanism. In this mechanism, the movement of the diaphragm, spring or Bourdon tube becomes the electric part, the pressure diaphragm becomes the capacitor part, and the indicator movable mechanism becomes the potential. The meter branch realizes the pressure measurement and control device.
Graeff is a British multinational group company specializing in the research and development, production and sales of melt pressure sensors, temperature sensors, industrial sensors, intelligent sensors, intelligent controllers and automation control systems.