Abstract: Bitumen and heavy fuel oil are of high temperature and viscosity, which increases the difficulty of tank metering and restricts the precise measurement and economic analysis. In this paper, the metering system of bitumen and heavy fuel oil tank farm in Myanmar depot was taken as an example. Based on the field situations, the components of a tank farm metering system were analyzed in detail from the aspects of system configuration and work flow. Then, the metering principles of the whole metering system were illustrated, and its functions were completed, including data acquisition, processing and transmission to the host system in the process of metering. Furthermore, the precise measurement of bitumen and heavy fuel oil tank farm and the control of special technological process were realized by improving the conventional measurement methods. In conclusion, monitoring the temperature, pressure and level of the products in tanks is conducive to ensure the accuracy of financial report, production plan and scheduling data, and can be used as the reference for the construction of automatic monitoring system in similar tank farms.