Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1974-08-12
1976-05-11
Queisser, Richard C.
Measuring and testing
Gas analysis
Moisture content or vapor pressure
23230LC, 733628, 116114Y, G01K 1112
Patent
active
039554201
ABSTRACT:
A rapid and convenient temperature indicator is provided having a tubular heat-conducting member joined at one end to a heat sink and having the other end rounded for ease of contact with the surface whose temperature is to be measured. Conveniently, a cylindrical protective cover is provided which is slidably mounted on the heat sink by means of a slot relieved threaded member and nut. The heat-conducting tube has a darkened surface which is coated with a liquid crystal composition having a mesophase temperature range which provides a temperature response in the range of interest. One or more liquid crystal compositions may be employed providing bands along the tube. A reticule is provided, which can be calibrated to give an accurate approximation of the temperature of the surface being measured.
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Queisser Richard C.
RPR, Inc.
Yasich Daniel M.
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