ApplicationNo. 06/843436 filed on 03/24/1986
US Classes:136/234, Molten metal immersion type136/232Covered and sealed sensor junction
ExaminersPrimary: Kyle, Deborah L.
Assistant: Wallen, T. J.
Attorney, Agent or Firm
International ClassesG01N 33/20 (20060101)
F27D 21/00 (20060101)
G01N 1/12 (20060101)
G01K 1/08 (20060101)
G01K 1/12 (20060101)
Foreign Application Priority Data1985-11-22 DE
AbstractA temperature sensing device suitable for repeated immersions into a molten metal bath. The invention including a protective refractory sleeve which encases a portion of a generally cylindrical cardboard support tube. Within the suppprt tube is mounted a temperature sensing unit including a body portion, which is positioned within the end of the support tube, and a thermocouple extension portion, which includes a U-shaped quartz tube and which extends through and projects away from the end of the protection sleeve. The cardboard support tube is wrapped with a reflective foil substantially over its end and its entire peripheral surface. The U-shaped quartz tube is provided with an alumina coating to prevent degradation of the quartz material during repeated immersions into the molten metal bath. The combination increasing the number of useful immersions of the sensing unit prior to failure.
Field of SearchTwo or more couples of dissimilar composition
One junction element surrounded by another junction element
Including sample port for sensed material
Having additional contact means for sensing solid work
Having wound wire-type thermocouples
Contacting covering over junction (e.g., embedded, coated, etc.)
Covered and sealed sensor junction
Molten metal immersion type
Having strip, film or plate-type thermocouples
Having housing, mounting or support