Thermal measuring and testing – Temperature measurement – Nonelectrical – nonmagnetic – or nonmechanical temperature...
Patent
1990-10-18
1993-05-18
Yasich, Daniel M.
Thermal measuring and testing
Temperature measurement
Nonelectrical, nonmagnetic, or nonmechanical temperature...
25022721, 2504581, 324702, 374131, 364557, G01K 1120, G01J 510
Patent
active
052114805
ABSTRACT:
A temperature sensing system has a signal means which provides a signal representative of a temperature responsive luminescence, where the luminescence has a characteristic time-rate-of-decay. A means for comparison is connected to the signal means and samples the signal during two time intervals, the first interval overlapping the second. The averages of the samples are compared to provide a difference signal representative of the difference between the two measured averages. Control means coupled to the comparison means provide an output representing the temperature as a function of the time-rate-of-decay, by adjusting the overlapping intervals so that the difference signal converges to a preselected limit.
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Cucci Gerald R.
Jensen Stephen C.
Peterson Charles M.
Rychnovsky Steven J.
Thomas David C.
Rosemount Inc.
Yasich Daniel M.
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