Repeating temperature sensing immersion probe

Details Repeating temperature sensing immersion probe Repeating temperature sensing immersion probe

1986-03-24

1987-09-08

Kyle, Deborah L.

Batteries: thermoelectric and photoelectric

Thermoelectric

Having housing, mounting or support

136232, H01L 3502

Patent

active

046925562

ABSTRACT:
A 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.

REFERENCES:
patent: 3816183 (1974-06-01), Kraus
patent: 4093193 (1978-06-01), Cassidy et al.
patent: 4396792 (1983-08-01), Falk
patent: 4521639 (1985-06-01), Falk
Cure et al., Ser. No. 780,707, Jan. 1986.

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