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Understanding switch configurations - Control Global
WEBNov 25, 2019 · A: NO and NC are the fundamental blocks of understanding any logic, be it soft or hardware. Normal condition is defined as energized condition and when plant/equipment/machine is running in normal condition, logic is true. NC means normally-closed contact. NO means normally-open contact.
Top 50 Automation Companies of 2021: Green Muscles In
WEBNov. 8, 2022. The Top 50 global and North American automation suppliers fend off recession with sustainability and digitalization. Larry O'Brien, Chantal Polsonetti, Mike Guilfoyle. The automation marketplace proved its resilience again in 2021 and returned to pre-pandemic levels. Despite advances in project engineering that reduced cycle times ...
Automatic tank gauging 101 - Control Global
WEBMar 15, 2021 · Automatic tank gauging 101. March 15, 2021. From measurement accuracy to lifecycle costs, the key considerations to keep top of mind. Keith Larson. The purpose of tank gauging is to measure the contents of tanks and vessels for inventory control and custody transfer. Most process plants have tanks that hold feedstock or …
How valve failure modes interact with controller actions and …
WEBDec 9, 2021 · The controller action is selected for the total loop (Figure 1) to always have negative feedback (RA). Each RA (180° phase shift) in the loop causes a sign reversal, while each DA results in no phase shift. In terms of the total loop, this means that if both the valve and the process are DA (phase shift = 0) or if both are RA (phase shift -180 ...
10 batch control resources you need to see | Control Global
WEBDec 22, 2022 · Basic explanations. This online article, “ISA-88 (S88) batch control explained” by Peter at PLC Academy, covers all the essentials, such as the process model, stages, operations, actions, physical model and levels, procedural control, ISA-88 model relationship, batch control concepts and controls, commands and …
Compressor surge control: Deeper understanding, simulation can ...
WEBOct 25, 2018 · Figure 4: The surge flow controller FC1-1 and enhanced PID valve position controller ZC1-4 have external reset feedback for directional move suppression for fast opening with slow closing of surge valves for fast getaway in abnormal situations and gradual optimization.
Top 50 Automation Companies of 2020: Rising to recover
WEBOct 27, 2021 · Coming out of the COVID-19 recession. The worldwide and North American automation markets almost universally declined in 2020 due to COVID-19. By April 2020, more than 80% of flights were restricted, cargo capacity was down, airlines and rental car companies reduced their fleets, and West Texas Intermediate Crude …
Back to Basics: Understanding how ultrasonic continuous level ...
WEBAug 7, 2013 · Ultrasonic level sensors work by the "time of flight" principle using the speed of sound. The sensor emits a high-frequency pulse, generally in the 20 kHz to 200 kHz range, and then listens for the echo. The pulse is transmitted in …
Batteries or fuel cells for energy storage? | Control Global
WEBMar 21, 2022 · The global energy storage market—if we include electric vehicle batteries—could see a five-fold increase in the next eight years, from 800 gigawatt-hours today to as much as 4,000 gigawatt-hours by 2030, according to the U.S. National Renewable Energy Laboratory. For most of us, electricity storage means batteries, but in a decade or two ...