Catalytic considerations in temperature measurement.Literature discussing catalytic activity in platinum group temperature sensors is surveyed. Methods for the determination and/or elimination of catalytic activity are reported. A particular application of the literature is discussed in which it is possible to infer that a shielded platinum total temperature probe does not experience significant catalytic activity in the wake of a supersonic hydrogen burner, while a bare iridium plus rhodium, iridium thermocouple does. It is concluded that catalytic data corrections are restricted and that it is preferable to coat the temperature sensor with a noncatalytic coating. Furthermore, the desirability of transparent coatings is discussed.
Document ID
19730057232
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Ash, R. L.
Crossman, G. R. (Old Dominion University Norfolk, Va., United States)
Chitnis, R. V. (Wyle Laboratories, Inc. Hampton, Va., United States)