The design, construction and testing of control systems and measurement of the natural gas, operated with maximum pressure upstream upto 12 bar for industrial and civil use, are treated by the standard series UNI 10619 which is composed, in addition to the present, UNI 10619-1, also from the following parts: - UNI 10619-1 - Systems pressure control and / or measurement of the natural gas, operated with maximum pressure upstream up to 12 bar for industrial and civil use.