Posted by(작성하신 분) Jon Watson ( September 08, 2000 at 00:53:17: )
In Reply to(원문) : Viscometer and Viscosimeter (or viscosimetro) - Terminology
posted by(원문 작성자) : rex on July 03, 2000 at 15:34:49:
Solartron manufacture process instruments to measure viscosity.
I can say that the choice of terminology is a constant topic particularly since the advnet of the internet and search engines! However much manufacturers would like to determine the choice of terminology it often must reflect the end users preferences.
We (in England and USA) normally would use the general term "viscometer" (our German Agent uses the term Vikositatsmessgerate, our French agent; "Viscosimetre") .
However we now are using other terms; partly to diferentiate between products and partly to reflect end user preferences.
For example, a "viscosity transmitter" is a process instrument which transmits a (4-20mA) signal proportional to viscosity. All the calculation and signal conditioning being done on the instrument in its microprocesser electronics.
A "viscosity transducer" transmits raw data to remote electronics for processing.
If the transducer and remote electronics are used for a "quality" measurement i.e. where the viscosity at reference temperatures are required, the end users tend to refer to them as "viscosity analysers". The resultant viscosity may be used to determine the molecular weight, for example.
If the transducer and remote electronics or the transmitter are used for a "behavior control measurement (modifying viscosity where the fluid is used for spraying, dipping, coating or atomising and where the viscosity at the process temperature is important as a measure of the effectiveness of the process, not the quality of the fluid) it may again be refered to as a "viscometer" irrespective of whether it is a transmitter or a transducer.
To my knowledge we have never used the term viscosimeter.
Another example of end user created terms is the expression "Direct measurement" coined by mark Shelley of Fluor Daniel (in the paper "Direct Measurement of Viscosity at high temperatures" given at the Texas A&M Instrument 2000 Symposium in January of this year) to describe the method of determining the reference-temperature-viscosity by controlling the sample temperature to be equal to the reference temperature. The corresponding term "Indirect Measurement" describes the measurement of viscosity at the process temperature (variable) and the determination of the reference-temperature-viscosity by calculation.
The increasing awareness of end users that viscosity is a vital and neglected process measurement will undoubtedly see many new terms come into use, some general and some with very specific meaning and use.