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.
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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.
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 ...
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.
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 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 …
Top 50 Automation Companies of 2019: Under siege - Control …
WEBOct 26, 2020 — If you’ve been a reader of the Control/ARC Top 50 in recent years, you know we report on the previous fiscal year’s revenues. Under normal circumstances, the previous year’s revenues are a good predictor of what will happen in the current year, but this year’s Control/ARC Top 50 seems instead to be a glimpse at a more prosperous recent past as coronavirus 2019 (COVID-19) continues to ...
Model-based control: Raspberry Pi vs programmable logic …
WEBMar 13, 2020 — This project’s objective is to perform the same functions on two different platforms: a standard industrial PLC using ladder-logic programming, and a Raspberry Pi 3 Model B programmed in Python under the Raspbian OS (based on Linux OS). Both hardware platforms use the same sensors and control interfaces (Figure 3).
Brooks debuts mass flow controller for semiconductor …
WEBSept. 27, 2021. Brooks Instrument released Aug. 25 its GP200 Series fully pressure-insensitive, pressure-based, mass flow controller (P-MFC) designed for etch and chemical vapor deposition (CVD) processes in semiconductor manufacturing. GP200 operates well in high-vacuum conditions and above atmospheric pressure conditions intrinsic to etch and ...
Best practices for PID - Control Global
WEBDec 17, 2018 — Proportional-Integral-Derivative (PID) control is used in more than 99% of the loops for chemical, pharmaceutical, and food and beverage production. PID has proven to be capable of the best load rejection by using the best tuning and the extensive flexibility of functionality offered by the PID structure and options, most notably external-reset ...