US Patent 9645036 Method of inspecting pressure switch

A method of inspecting pressure switch for inspecting if stability and the pressure switch's setpoint are within the standard range includes steps of: providing a standard pressure generator and a pressure detector, and connecting the standard pressure generator to the pressure switch and the pressure detector. Then, provide an inspector, and create data which includes a setpoint pressure value and a pressure switch operation condition. Next, electrically connect the inspector to the pressure switch and the pressure detector. Next, standard pressure generator applies pressure on the pressure detector and the pressure switch. Record the set pressure value and the reset pressure value of the pressure switch and calculate error values between the set pressure value, the reset pressure value and the default pressure value, and judge if stability and the pressure switch's setpoint are within the standard range according the error values.