PURPOSE:To record data through a single recorder, by a method wherein a pump for injection is located between main agent and an auxiliary agent feed pipe, a liquid quality detector is located, and the liquid quality detector is coupled to the recorder. CONSTITUTION:A ratio of liquid A to liquid B, a pouring pressure, and an injection amount are set by an injection instruction circuit 26, and switching conditions for liquids A1, A2, B1, and B2 are set to input them in a control circuit 25. By means of a signal from a valve switching control circuit 28, electromagnetic valves 7 and 16 are opened and other electromagnetic valves 8, 9, 17, and 18 are closed so that liquid A1 poured as a main agent and liquid B1 as an auxiliary agent. With pumps 10 and 19 driven, the liquid A1 is fed with a pressure to an injection nozzle 15 of an injection pipe 14 through the pump 10, a flow meter 11, a liquid quality detector 12, and a feed pipe 13, the liquid B1 is fed with a pressure to the injection nozzle 15 through the pump 19, a liquid quality detector 20, and a feed pipe 21 for mixing, and the liquids are injected through the pipe 14 into a grount hole 24. A flow rate, liquid quality, and a pressure are recorded by a record display device 27.
展开▼
