| 摘要 |
PROBLEM TO BE SOLVED: To automatically change set pressure in accordance with the variation of gas consumption. SOLUTION: This pressure controller 11 consists of a pressure control valve 14, a pilot valve 16 and a pressure setting part 17. In the memory of a control circuit 18, charge patterns A to F as pressure control data for changing a set pressure value Ps corresponding to the variation of the gas use in each season (date) are stored. Since the respective patterns A to F control supplying pressure by respectively different control patterns, the delicate control of pressure can be performed in accordance with the temperature variation and the time zone in each season. Consequently, the circuit 18 selects a chart pattern corresponding to the present date and based on the selected chart pattern, the circuit 18 drives and controls the part 17 so as to make a secondary shaft T2 to be set pressure to adjust the pilot pressure of the valve 16 and to automatically correct pressure to be controlled by the valve 14.
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