Radiation detector having temperature readout

Details Radiation detector having temperature readout Radiation detector having temperature readout

1985-06-27

1987-01-13

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

250342, 250571, 356 43, 356380, 374169, G01J 518, G01K 120

Patent

active

046360913

ABSTRACT:
A hand held radiation detector may be used for scanning of a surface from a distance to obtain a gross indication of temperature variations in the surface. The radiation detector is provided with a nosepiece having a conical cup therein which can be placed directly against a surface. The radiation sensor views the surface through the cup to obtain an accurate indication of temperature substantially independent of the emissivity of the surface. The radiation sensor and a temperature sensor are potted with high conductivity material in an insulating sleeve within the nosepiece. The nosepiece is of high conductivity material and is thermally connected to a main housing which serves as a heat sink. Temperature indications are obtained from the sensed radiation indication by means of a piecewise linear gain analog circuit.

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The Engineering Staff of Analog Devices, Inc., "Nonlinear Circuits Handbook", p. 95, D. H. Sheingold.

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