Manufacturing system with intrinsically safe electric information storage

A system for handling liquid in a container disposed in a hazard zone, the system comprising:

• a cap adapted to be coupled to the container and having a radio frequency identification (RFID) tag mounted thereon;
• a radio frequency (RF) antenna which is capable of storing information to and reading information from the RFID tag;
• a controller coupled with the RF antenna to control processing of the liquid from the container based on information read from the RFID tag by the RF antenna;
• and
• an intrinsic safety barrier connected between the RF antenna and the controller.

An intrinsically safe data retrieval system comprising:

• a radio frequency identification (RFID) tag containing information to be retrieved, the RFID located in a hazard zone;
• a radio frequency (RF) antenna electromagnetically coupled to the RFID tag, the RF antenna located in the hazard zone;
• a communication device adapted for communicating with the RF antenna, the communication device located outside the hazard zone;
• and
• an intrinsic safety barrier located outside the hazard zone and connected between the RF antenna and the communication device.

A manufacturing system including a hazard zone and a non-hazard zone, the system comprising:

• a communication device, located in the hazard zone, for storing information to and reading information from an electrical storage device located in the hazard zone;
• a controller, located in the non-hazard zone and in electrical communication with the communication device, for controlling the system based on information read from the storage device by the communication device;
• and
• an intrinsic safety barrier located in the non-hazard zone and connected between the communication device and the controller to limit electrical energy passing to the communication device.