发明名称 QUANTITATIVELY MEASURING APPARATUS
摘要 PURPOSE:To achieve accurate measurement of a trace quantity of fluid by controlling the pressure and the temperature of an adhesive liquid at the outlet of a choking device to a fixed level to keep the viscosity, density of the adhesive liquid and the outflow speed when the liquid is sent out of a nozzle. CONSTITUTION:The output of a servo motor 6 is controlled by the output of a servo amplifier 9. On the other hand, a pressure detector 7 detects the pressure of a liquid in a fluid feed tube 3 and inputs the data thereof into a servo controller 8, in which the data is compared with a preset reference value to control the servo amplifier 9 so that the deviation therebetween zeros to always maintain the pressure in the fluid feed tube 3 at a fixed level. In addition, a temperature detector 10 detects the temperature of a liquid in the fluid feed tube 3 and the detection value is compared with a preset reference value by a comparator circuit 11 to always keep the liquid temperature of the fluid feed tube 3 constantly at a fixed reference value. This keeps the pressure and temperature of an adhesive liquid 2 constant at the inlet of a choking device 14 to uniformize physical nature such as viscosity and density thereby keeping the flow rate of a fluid flowing through the choking device 14, a changeover valve 15, a choke 21 and a fluid return tube 4 constant.
申请公布号 JPS59111020(A) 申请公布日期 1984.06.27
申请号 JP19820220094 申请日期 1982.12.17
申请人 OVAL KIKI KOGYO KK 发明人 YAMAMOTO HIROSHI
分类号 G01F11/00;G01F13/00;(IPC1-7):01F11/00 主分类号 G01F11/00
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