Radiation compensated thermometer

摘要

A radiant compensated thermometer, which uses a pair of parabolic-shaped radiation shields that are spaced-apart from one another. An upper shield is positioned to intercept the sunlight from impacting on a lower shield; both shields have an outer substantially reflective surface and an inner substantially non-reflective surface. A temperature sensor is positioned in a “dead space” near the inner surface of the lower shield, which is cooler than the other areas of the device.

主权项

1. A radiation compensated thermometer apparatus, comprising:
(a) a substantially circular first radiation shield subassembly, having: (i) a substantially parabolic first substrate, (ii) a first, convex outer substantially thermally reflective coating, (iii) a first, concave inner substantially thermally non-reflective coating, and (iv) a first mounting location, wherein said first substrate exhibits a first diameter; (b) a substantially circular second radiation shield subassembly, having: (i) a substantially parabolic second substrate, (ii) a second, convex outer substantially thermally reflective coating, (iii) a second, concave inner substantially thermally non-reflective coating, and (iv) a second mounting location, wherein said second substrate exhibits a second diameter that is smaller than said first diameter; (c) a longitudinal member that extends between said first mounting location and said second mounting location, so that said first and second radiation shield subassemblies are mounted such that: (i) said first, concave inner surface and said second, concave inner surface face one another, (ii) said first and second radiation shield subassemblies are spaced-apart from one another, and (iii) said first and second radiation shield subassemblies are in a substantially parallel configuration to one another; (d) wherein said first radiation shield subassembly exhibits a first cool layer area proximal to said first, concave inner surface, and said second radiation shield subassembly exhibits a second cool layer area proximal to said second, concave inner surface, wherein said first and second radiation shield subassemblies are sufficiently separated that said first cool layer area does not significantly interact with said second cool layer area; and (e) a first temperature sensor that is positioned in one of: (i) said first cool layer area, and (ii) said second cool layer area.