Understanding temperature and transmitters: because temperature is one of the basic metrics used in the measurement of flow, density, and other factors, the temperature transmitter is one of the most widely used field devices in industry today. Understanding one helps in selecting the other.

From: Control Engineering | Date: July 1, 2005| Author: Cassiolato, Cesar | Copyright information

Temperature has a long history, grounded in personal understanding, like sticking a toe into the water before jumping in. Understanding a bit of history can help before you dive into selecting your next temperature transmitter.

Temperature is defined as the measure of the average kinetic energy of the molecules of a substance, represented in a numerical scale with larger values indicating a greater average kinetic energy. However, this has not always been the case. The r...

Related newspaper, magazine, and journal articles from HighBeam Research

Practical temperature scales.(Measure Temperature, part 2)
Ceramic Industry ; In the first article in this series, we described the way in which a complete temperature scale can be defined by selecting two reproducible temperature conditions and assigning specific values of temperature to these two conditions. The reproducible temperature conditions usually selected are the
ASK THE GLOBE
The Boston Globe ; Q. What is the difference between the Celsius and centigrade temperature scales? B.M. Nashua, N.H. A. According to Webster's New World Dictionary, both names refer to a temperature scale divided into 100 degrees, in which zero degrees is the freezing point and 100 degrees is the boiling point of
This Week in History
The Washington Post ; German physicist Gabriel Daniel Fahrenheit was born on May 14, 1686. He developed precise thermometers and his own temperature scale. His low-temperature mark, 0 degrees Fahrenheit (pronounced FAIR-un-hite) was the coldest temperature that could be reached under lab conditions then. He set the
Automated Freezing Point Analyzer.(New Products & Literature)
Laboratory Equipment ; The FZP 5G2s Automated Freezing Point Analyzer provides freezing point determinations to -100 C, helping to assure low-temperature flow performance of aviation fuel. The unit detects crystallization in all types of jet fuels, providing operation not affected by ambient moisture. PAC Petroleum
FREEZING POINT
The Record (Bergen County, NJ) ; The Record (Bergen County, NJ) 12-28-1992 FREEZING POINT Date: 12-28-1992, Monday Section: NEWS Edition: All Editions -- 3 Star, 2 Star P, 2 Star B, 1 Star Late, 1 Star Early FREEZING POINT: Rich Steele, left, Jeff Bough, and ...
Temperature scale conversions.(Illustration)
Ceramic Industry ; Temperature Scale Conversions From From Convert From From F to K F to C F, C or K C to F K to F 244.3 -28.9 -20.0 -4.0 -- 249.8 -23.3 -10.0 14.0 -- 255.4 -17.8 0.0 32.0 -459.7 260.9 -12.2 10.0 50.0 -441.7 266.5 -6.7 20.0 68.0 -423.7 272.0 -1.1 30.0 86.0 -405.7 277.6 4.4 40.0 104.0 -387.7 283.2 10.0
Letters
Mechanical Engineering ; THE FIRST DIESEL ELECTRIC LOCOMOTIVE To the Editor: The article "Virtual Engineering on the Right Track" in the November 1996 issue states that the Electro-Motive Division (EMD) of the General Motors Corp. "originated the diesel electric locomotive." The first locomotive to have an EMD builders
ASK DR. KNOWLEDGE
The Boston Globe ; Q. PLEASE EXPLAIN WHY MR. FAHRENHEIT USED SUCH UNUSUAL NUMBERS FOR HIS FIXED POINTS ON HIS SCALE. WHAT ABOUT OTHER TEMPERATURE SCALES? R.T.P, PORTER THERMOMETER MUSEUM, ONSET A. THE GERMAN PHYSICIST, GABRIEL D. FAHRENHEIT, INVENTED THIS RATHER WEIRD SCALE AROUND 1714, BUT IT WASN'T ALWAYS AS CRAZY
Something to sniff about; answers to correspondents.
The Daily Mail (London, England) ; Byline: JAMES BLACK QUESTION Where did the phrase 'cock a snook' originate? PRIOR to the introduction of handkerchiefs, blockages in the nose were commonly cleared by holding one nostril closed with the thumb, and blowing any obstruction on to the ground. This was not an overly pleasant sight to
Something to sniff about answers to correspondents
Daily Mail ; QUESTION Where did the phrase 'cock a snook' originate? PRIOR to the introduction of handkerchiefs, blockages in the nose were commonly cleared by holding one nostril closed with the thumb, and blowing any obstruction on to the ground. This was not an overly pleasant sight to witness, and to clear