Method of and device for determining internal body structure
Non-contacting measurement of surface temperature
Method and apparatus for dynamic balance detection of a calender strip
Field effect transistor-type moisture sensor
Test strip identification and instrument calibration Patent #: 4714874
ApplicationNo. 207048 filed on 05/09/1988
US Classes:374/153, With roll or rotary specimen or support134/64R, For sheet, web, strand or bar form work, longitudinally traveling374/57Of susceptibility to thermally induced deteriouration, flaw, or failure
ExaminersPrimary: Yasich, Daniel M.
Attorney, Agent or Firm
Foreign Patent References
International ClassesG01K 017/08
Foreign Application Priority Data1986-09-18 NL
AbstractA transducer is provided for determining the concentration of contaminants in fabric webs. The transducer includes an insulated measuring roller with two electrode rings separated by insulation and extending to the surface of the roller. The roller is supported on swing arms and the electrode rings are connected in the circuit of a conductivity meter. The swing arms cooperate with springs to provide for pressing of the roller against an insulated guiding roller for the fabric web under test. Additional metallic rings can be included in the roller which include temperature sensors used for compensating for the temperature dependency of the conductivity measurement. The guiding roller comprises a metallic roller with an insulating coating. Pairs of the rollers can be included in a device for washing fabric webs.