Electric Pressure Cooker
This is kind of float valve. If the pressure inside the chamber crosses its safety limit, it operates to release the extra pressure. In addition to inner pot, top lid with pressure release safety valve, there are other three essential parts in electric pressure cooker housing. These are an electrical heating element, pressure temperature controller and pressure temperature sensor.
The temperature and pressure of inner pot is monitored by associated sensors. The controller is normally a microprocessor based system. The operation time, temperature and cooking cycle can be pre-adjusted by the controller. There must be a protection scheme provided with the system. If undesired operating condition reaches, there must an alarming system to alert by signal and sound. The system may also cut the supply to heating element to stop the operation entirely.