公开(公告)号：US5089781A

公开(公告)日：1992-02-18

申请号：US653772

申请日：1991-02-11

申请人： Kenji Arichika ,  Mitsuru Fukamachi ,  Satoshi Higashi ,  Noboru Maruyama

发明人： Kenji Arichika ,  Mitsuru Fukamachi ,  Satoshi Higashi ,  Noboru Maruyama

IPC分类号： G01N27/02 ,  G01R27/22

CPC分类号： G01R27/22 ,  G01N27/023

摘要： An electromagnetic conductivity meter comprises a core; a primary coil wound around the core; an alternating power source for applying an alternating voltage having a given frequency to the primary coil to excite the core; a tube wound around the core through which a liquid to be measured flows; induction current detecting means disposed at the opposite ends of tube; and an operational means for determining the conductivity of the liquid to be measured from a value of the induction current detected by the induction current detection means.

公开(公告)号：US4420257A

公开(公告)日：1983-12-13

申请号：US121314

申请日：1980-02-14

申请人： Mitsutoshi Fukuda ,  Nobuyuki Baba ,  Kenji Arichika

发明人： Mitsutoshi Fukuda ,  Nobuyuki Baba ,  Kenji Arichika

IPC分类号： G01N21/53 ,  G01N21/00

CPC分类号： G01N21/532

摘要： A laser light beam is projected through a fluid measuring cell having a fluid accommodating chamber and inlet and outlet pathways for the fluid. The light is separated into transmitted light and scattered light. Separate light detectors sense the transmitted light and scattered light. An electric control circuit uses the variations of the intensity of the transmitted light to compensate for fluctuations in the intensity of the scattered light to provide an output related to the intensity of the scattered light.

摘要翻译： 激光束通过具有流体容纳室的流体测量池和用于流体的入口和出口路径投射。 光被分离成透射光和散射光。 独立的光检测器感测透射光和散射光。 电气控制电路使用透射光的强度的变化来补偿散射光的强度的波动，以提供与散射光的强度相关的输出。