The new sampling/sensor initiative (NeSSI) is moving steadily to fulfill its original promise of increased efficiencies, costs-savings, and micro-analytic capabilities despite recent growing pains related to fieldbus.
The compressed air industry is taking a step that will clear the air about the performance of its equipment. For the first time, many compressed air equipment manufacturers will submit their 50 hp to 200 hp lubricated rotary-screw compressors and 200 cfm to 1,000 cfm refrigerated air dryers to an independent laboratory for performance testing.
The longer-than-expected life of an adsorbent points up the need to always assess the consequences of system additions. While sometimes this may involve detailed calculations, simply looking to the laws of physics can eliminate potential headaches.
Author: Andrew Sloley, contributing editor and Bruce Veale
"Bad actor" pumps are those pumps that have trouble with frequent and repetitive failures. In many cases, the source of the problem is an ANSI pump trying valiantly to handle a liquid well beyond the range of its design rating.of 300 degs. F.
Chemical processors face significant challenges in controlling fugitive emissions. The emissions escape from valves, compressors, pumps, piping components, etc. It is a difficult task, but necessary to avoid penalties and other liability.
Theres no simple solution to achieving accurate temperature measurement. Its a combination of knowing the inherent accuracy of particular sensor types, and how environmental factors can create further measurement uncertainty and the sensor calibration techniques available to reduce this uncertainty.
Author: Cal Swanson, Watlow Electric Manufacturing Co.
Pipe strain can cause premature failure of pumps. This can frequently be absorbed by a flexible pipe coupling... but only if that pipe coupling is properly installed. Merely putting it into the line without any support, will not achieve any significant relief from the pipe strain. In order to protect the pump against the pipe strain, it must be anchored.