I D
× COMMENTARY
Digitalization Game ChangersGame Changers
The technologies associated with the Industrial Internet of Things, and…
COVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
ANG fueling station Ingevity (North Charleston, S.C.; www.ingevity.com) has completed…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILESOLIDS PROCESSINGEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More SHOW PREVIEWS

Comment PDF

Communication Technologies for Throttling Valve Control

By Terry Blevins and Kurtis Jensen, Emerson |

Closed-loop control performance depends on the dynamic response of the controller, valve, measurement and process. Can wireless compete with conventional networks? When using throttling valves in closed-loop process control, a variety of factors impact the selection of the most appropriate communications network. Chief among them are performance and installation cost. Within the chemical process industries (CPI), three networking technologies are commonly used to interface throttling valves with the automation system: 4–20 mA with HART, fieldbus and wireless. This article examines these three options, and also provides information on emerging technologies to improve control performance.   Factors affecting control performance Performance in a closed-loop control application depends on the dynamic response of the controller, valve, measurement and process (Figure 1). To achieve a target control objective, it is necessary to consider all of these components (see sidebar section “Valve and Positioner Technology”). Figure 1. Several factors can affect the performance of the control loop for a throttling valve[/caption] Performance and cost discussions should always start with the process, but care should be taken…
Related Content
Using Corrosion as a Process Variable
Monitoring and analyzing historical corrosion data can provide insights not available from manual inspection and measurement techniques Some petroleum refiners…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Reduce Explosion Risk in 2 Seconds with In Situ Oxygen Analysis
Tunable Diode Laser Spectroscopy in Critical Applications
Non-Contacting Gas Sensors Minimize the Risk of Corrosion to Plant Equipment.
5 ways to Optimize Production of Polymers and Intermediate Petrochemicals
7 Ways to Achieve Process Safety in Chemical Production

View More

Live chat by BoldChat