METHOD AND APPARATUS FOR MEASUREMENT CONTROL OF FLOW AMOUNT OF FLUID ADDED TO GAS IN MINUTE AMOUNT

摘要

PURPOSE:To control the flow amount of a fluid to a set value by accurately calculating the same, by measuring the temp. of the liquid and the timewise interval of a liquid droplet dripping from a nozzle. CONSTITUTION:A liquid temp. meter 3 and a flow control valve 4 are inserted in the route between a storage tank 1 of an odorant and a dripping nozzle 2 while a sensor 6 for sensing the liquid droplet of the odorant is provided to the route between the nozzle 2 and a gas pipe 5. The signals of the liquid temp. member 3, the flow control valve 4 and the sensor 6 are sent to a central processing unit 7. The central processing unit 7 receives the signals S1, S2 from the liquid temp. meter 3 and the sensor 6 and the flow setting signals S3 of gas flowing through the gas pipe 5 to perform operation processing and outputs the control signal S4 of the flow control valve 4. By this method, the flow amount of the odorant is always properly and automatically controlled corresponding to the flow amount of the gas.