Patents Assigned to Servomex PLC
  • Sensor for combustible gases
    Patent number: 5549871
    Abstract: A combustible gas sensor comprises four glass insulated radially extended and symmetrical temperature sensitive elements which are coated with a porous ceramic but only two elements having a catalyst. The sensor is mounted inside a temperature controlled reactor vessel in a region of no temperature gradient into which a combustible gas mixture is admitted and reacted on the catalytic surfaces. The change in the resistance of the elements under the catalyst is a measure of the concentration of the combustible gas.
    Type: Grant
    Filed: October 13, 1995
    Date of Patent: August 27, 1996
    Assignee: Servomex PLC
    Inventors: Riad M. A. Kocache, Dany F. Holman, James Swan