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platinum resistance thermometer |
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platinum resistance thermometer [′plat·ən·əm ri¦zis·təns thər′mäm·əd·ər] (engineering) The basis of the International Practical Temperature Scale of 1968 from 259.35° to 630.74°C; used in industrial thermometers in the range 0 to 650°C; capable of high accuracy because platinum is noncorrosive, ductile, and nonvolatile, and can be obtained in a very pure state. Also known as Callendar's thermometer. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The standard platinum resistance thermometer (SPRT) is located in a thermowell alongside the equilibrium cell. Platinum is used in catalytic devices, fuel cells and in the manufacturing apparatus for laboratory and industrial use, thermocouples, platinum resistance thermometers, acid proof containers, electrodes, etc. Between these fixed points, standard platinum resistance thermometers (SPRTs) are used as interpolating devices with a prescribed interpolation formula. |
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