Device, system and method for monitoring a container

The present invention relates to a wireless communication device and a method for identifying a container for containing contents such as solid, liquid, or gaseous materials. The device includes a wireless communication device for transmitting information regarding the container. A valve assembly is positioned over an opening in the container for controlling the flow of contents from the container. The wireless communication device is mounted within the valve assembly, and preferably within the ball. The wireless communication device communicates information to an interrogation reader. The temperature associated with the container and/or its contents may be determined by various techniques including thermal contact between the temperature sensor and the container, measuring the discharge rate in a discharge capacitor associated with the wireless communication device, and determining the maximum energy absorption frequency of the wireless communication device. The liquid level of the container may be determined by employing liquid level sensor techniques.