Patents Assigned to Ratfisch Instrument
  • Apparatus for continuously measuring the hydrocarbon concentration in a gas flow
    Patent number: 4981652
    Abstract: An apparatus for continuously measuring the hydrocarbon concentration in a gas flow includes at least one flame ionization detector with a combustion chamber housing electrodes between which a current flows due to ionization in the area of a burner flame. The combustion chamber of the flame ionization detector is connected to a suction pump in form of a venturi tube for applying an underpressure in the combustion chamber so as to allow especially sample gas but also burner gas and oxidizer to be drawn into the combustion chamber.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: January 1, 1991
    Assignee: Ratfisch Instrument
    Inventor: Werner Ratfisch