Fuel dispenser , very important for the oil trade and business, is the legal compulsory metrological apparatus in China. It plays a crucial role in the market like the "balance". The accuracy of dispenser exercise an influence on the legal right and interest as well as the metrological development and reputation in china.

The dispenser in china has gain a great development in recent year. About 200 thousands dispensers are used for the distribution of fuel statistically, however the situation of quality for those machine isn't satisfactory. The National Quality and Technical Inspection Bureau has checked and inspected regionally the utilization of dispenser and find that a number of dispenser are in problem of measuring. The main reasons for that are: quality of dispenser, maintenance and inspection; the knowledge of the repairer to the performance of dispenser and fraud conducted by some criminals

It's clear edited in the metrological law: The metrological inspection procedure shall be executed strictly. Therefore the test procedure, regarded as the technical guarantee of the accurate metrological transmission, play a important role in the measuring and transmission.

<Fuel Dispenser JJG44395>, drafted by the expertise who pioneered in the field combined the metrological test procedure and international norm, demonstrating the manufacture, utilization and management in the Chinese dispenser industry, equal to the international legal metrological organization and its concerning recommendation, has edited a series of requirements for the metrological control and managements of dispenser.

Exclusively national metrological textbook <Fuel dispenser> not only make a detailed explanation of the modification of regulation, but also demonstrate completely all the components of dispenser, which is based on the characteristic of dynamic metrology for dispenser. The carnet, presenting totally the overall and concrete test method such as targeted test and sample test, are necessary to be understood and mastered for the engineers and technicians in the industry of flow metrology.

The edition of the <Metrological Test Procedure> and < Notebook> is very tough technically, which not only illustrate the national metrological research but also depict by the meaning of details for that all the technician who master the medium knowledge of metrology.

　　　　　　　　　　　　　　　　　　　　National Quality & Technical Inspection Burea
　 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　Oct 1998