| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for measuring gas concentration in continuously-manufactured solution on in-line and also on time, and equipment for efficiently-manufacturing any solution of desired gas concentration. SOLUTION: This equipment comprises gas supply means (1) including gas flow rate regulating means, gas dissolver (7) into which gas and solution from the above gas supply source are introduced, solution flow regulating means (14) for constantly-controlling flow rate of the above solution introduced into the above gas dissolver, and delivery tube for deriving solution from the above gas dissolver. Additionally, it is provided with measuring device (13) for measuring amount of gas bubbles existing in the above delivery tube, and control device (16) which calculates gas concentration of the above solution from relational expression of the gas concentration with the amount of gas bubbles previously-obtained from measurement under the condition that the above solution flow and gas flow rate are set to respectively be constant, relational expression of the gas concentration with the amount of gas bubbles previously-measured from the measurement from the above measuring device, and this measurement from the above measuring device to control the above gas flow rate regulating means (5) and/or the above solution flow regulating means (14) based on the above calculation results. COPYRIGHT: (C)2009,JPO&INPIT |
