Ad
related to: construction of platinum resistance thermometer prt 2
Search results
Results from the WOW.Com Content Network
Platinum was proposed by Sir William Siemens as an element for a resistance temperature detector at the Bakerian lecture in 1871: [2] it is a noble metal and has the most stable resistance–temperature relationship over the largest temperature range.
Werner von Siemens was the first to propose the use of a platinum resistance temperature detector in 1860, although his instrument readings were unstable. [2] Callendar developed an equation for the resistance of metal as a function of temperature, which was accurate to within 1% from 0-600 °C. [2]
The Callendar–Van Dusen equation is an equation that describes the relationship between resistance (R) and temperature (T) of platinum resistance thermometers (RTD). As commonly used for commercial applications of RTD thermometers, the relationship between resistance and temperature is given by the following equations.
The resistance wire in the thermometer is made of pure platinum (NIST manufactured the wires from platinum bar stock with a chemical purity of 99.999% by weight). [77] [78] In addition to laboratory uses, Platinum Resistance Thermometry (PRT) also has many industrial applications, industrial standards include ASTM E1137 and IEC 60751.
Three employees at a Maryland Cracker Barrel have reportedly been dismissed after staff refused to seat a group of students with special needs on Dec. 3 Superintendent of Charles County Public ...
Each candle is 2.5 ounces with a 20-hour burn time, and the set comes in a pretty decorative box that makes it ideal for gifting. $150 at Nordstrom. Target. Best budget holiday candle
This page was last edited on 8 September 2006, at 21:07 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
When they retired, the Leedys lived in Alexandria, Virginia, an affluent, high-cost Washington, D.C., suburb. “My mother was 92, and we knew we had to have her live with us, as she could not ...
Ad
related to: construction of platinum resistance thermometer prt 2