Search results
Results from the WOW.Com Content Network
Instrumentation controls the operation of process columns Instrumentation is used to monitor and control the process plant in the oil, gas and petrochemical industries. Instrumentation ensures that the plant operates within defined parameters to produce materials of consistent quality and within the required specifications.
Production tests involve flowing the well at different rates and measuring the flow rates and pressures. –Buildup tests: Buildup tests are conducted on producing wells to measure reservoir pressure and permeability. Builtup tests involve shutting in the well after a production test and measuring the pressure as it builds back up. [7]
Historically, the definition of a scientific instrument has varied, based on usage, laws, and historical time period. [1] [2] [3] Before the mid-nineteenth century such tools were referred to as "natural philosophical" or "philosophical" apparatus and instruments, and older tools from antiquity to the Middle Ages (such as the astrolabe and pendulum clock) defy a more modern definition of "a ...
For such sensitive cases there is a test for the metal content of a column is to inject a sample which is a mixture of 2,2'- and 4,4'-bipyridine. Because the 2,2'-bipy can chelate the metal, the shape of the peak for the 2,2'-bipy will be distorted (tailed) when metal ions are present on the surface of the silica .
Such instrumentation originated as a necessity to constantly monitor vital signs of Astronauts during NASA's Mercury, Gemini, and Apollo missions. [ 2 ] [ dubious – discuss ] Bioinstrumentation is a new and upcoming field, concentrating on treating diseases and bridging together the engineering and medical worlds.
Variations in the electrical conductivity and magnetic permeability of the test object, and the presence of defects causes a change in eddy current and a corresponding change in phase and amplitude that can be detected by measuring the impedance changes in the coil, which is a telltale sign of the presence of defects. [5]
Get your free daily horoscope, and see how it can inform your day through predictions and advice for health, body, money, work, and love.
Many of today's biosensor applications are similar, in that they use organisms which respond to toxic substances at a much lower concentrations than humans can detect to warn of their presence. Such devices can be used in environmental monitoring , [ 86 ] trace gas detection and in water treatment facilities.