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WEBControl Global features news and analysis of process control and automation technology to help managers and engineers maintain and optimize systems for today's process industries.
How to size and select your next pressure relief valve
WEBNov 4, 2020 · The valve will close when the inlet flange pressure drops to 93-psig (100 – 7). Assuming inlet pressure losses of 3%, the system pressure at closing will be 96-psig (93 + 3). Now, assuming that inlet losses are 10-psig, the valve will close at 103-psig, which is 3-psig higher than the set pressure.
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 ...
Belden to acquire Hirschmann Automation and Control - Control …
WEBFeb 7, 2007 · St. Louis, Missouri Belden has entered into a definitive agreement to purchase Hirschmann Automation and Control GmbH (together with certain affiliates "HAC") from HgCapital, a European private equity investor, for a cash purchase price of approximately $260 million. HAC is a leading supplier of Industrial Ethernet solutions and industrial connectivity.
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 …
The benefits and challenges of cascade control
WEBMay 24, 2023 · The benefits and challenges of cascade control. May 24, 2023. Cascade control can be understood best by using values and units of process variables. R. Russell Rhinehart. There are several techniques that enhance PID, termed advanced regulatory control. These were developed in the 1930s-40s and include reset feedback to prevent windup, override ...
A straightforward explanation of feedforward control
WEBJun 9, 2020 · The ISA Mentor Program “Feedforward and Ratio Control” webinar including a Q&A addendum has an intensive steam system example and gives concepts of ratio control including automated adaptation of the ratio setpoint or bias to minimize the feedback correction. Slide 6 provides considerable understanding of why experts use feedforward summers or multipliers.
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.
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.
Beginner's Guide to Differential Pressure Level Transmitters
WEBFeb 9, 2009 · A somewhat more complex application is illustrated in Figure 2. In this application, for process reasons, we need to take the measurement from 200 mm to 1000 mm above the nozzle.