G - Physics – 01 – K
Patent
G - Physics
01
K
26/201, 73/72
G01K 7/24 (2006.01) G01K 7/22 (2006.01) G01K 13/00 (2006.01) G01K 19/00 (2006.01)
Patent
CA 1128337
ABSTRACT OF THE DISCLOSURE Temperature-sensitive instruments and methods for produc- ing them are disclosed. The apparatus disclosed comprises a pair of temperature-sensitive sensors which have at least one electrical property, such as resistance, which varies with temperature, and which are in electrical communication with each other, conductors connected to these sensors so that the temperature-sensitive instrument can be employed to provide a temerature reading by determining that electrical property from the conductors, and where the electrical property of each of the sensors has equal and opposite deviations from predeter- mined values so that the sum of those deviations approximately equals zero. In a preferred embodiment the sensors are coupl- ed in series. The method disclosed includes measuring an electrical property of a plurality of these temperature- sensitive sensors, which preferably are thermistors, sorting the sensors in accordance with the measured values of that electrical property, selecting a plurality of the sorted sensors so that the sum of the deviations from predetermined values of the measured values of their respective electrical properties is approximately equal to zero, and assembling those selected sensors into a temperature-sensitive instument.
344288
Hdkansson B. Hdkan
Oettle George W.
Crafon Medical Ab
Marks & Clerk
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