Study on Measuring Technique for Metal Tank’s Oil Temperature and it’s Level

This paper designs real-time distributing measurement and monitoring system based on field bus for meeting the needs of testing and monitoring large-scale oil tanks. The system uses optical fiber sensor to collect the oil tank’s data, and has the advantages of the high precision, the high reliability, the strong anti-disturbed, and the avoiding of fire hidden trouble effectively, by the way of using the industrial Ethernet to achieve long-distance communication by RS-485, with a computer as controlling center to collect the data, and measures, monitors and manages oil tanks intelligently. And then the system is designed according to HART port protocol, as real-time testing and monitoring software to predict and manage automatically with advantages of fault diagnosis, routine maintenance, prediction of fire hidden trouble, and function of reliability, by relieving workload and good economical and social benefit.