Patents Assigned to Nichiri Mfg. Co., Ltd.
  • Electromagnetic conductivity meter and a conductivity measuring method
    Patent number: 5089781
    Abstract: 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.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: February 18, 1992
    Assignees: Tosoh Corporation, Nichiri Mfg. Co., Ltd.
    Inventors: Kenji Arichika, Mitsuru Fukamachi, Satoshi Higashi, Noboru Maruyama