Monitoring system for a mobile storage tank

A remote monitoring system for a mobile storage tank having a product container for storing a liquefied gas at cryogenic temperatures, said remote monitoring system comprising:

• a sensor system to generate level signals referable to a liquid level of a liquid phase of said liquefied gas and pressure signals referable to vapor pressure of a vapor phase of said liquefied gas within said product container;
• a global positioning system connected to said mobile storage tank to generate global position signals referable to a global position of said mobile storage tank in global latitude and longitude coordinates;
• and
• a remote telemetry unit on board said mobile storage tank and responsive to said level signals, pressure signals and global position signals to store data records containing data referable to the liquid level and vapor pressure within said product container and the global latitude and longitude coordinates and to effect a wireless transmission of said data records and a unique remote telemetry unit identification in a standard message structure.