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Ask the Automation Pros
This long-running series of discussions, curated by 2010 ISA Life Achievement Award recipient Greg McMillan, gathers responses from ISA subject-matter experts on technical topics important to industrial automation professionals, academics and students.
169 Results Found
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FeatureWhat Are the Factors that Affect VFD Rangeability?
What are the factors that affect VFD rangeability? -
FeatureHow to Create a P&ID
P&IDs should generally follow ISA symbols for the basic instruments. If you follow that symbology, most anyone can read and understand the P&IDs quickly. -
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What Are the Important Criteria for Selecting a System Integrator for an Industrial Project?
Choosing an integrator for an industrial automation project is like choosing an architect for the house of your dreams – you can get almost any architect to build a dwelling structure, but the house o -
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How to Select a System Integrator for an Industrial Automation Project
Look for an industrial systems integrator that can add value…not one that just does what you tell them. A good integrator will ask lots of questions so they fully understand your process. -
FeatureAnnubar or Orifice Flowmeter: What Is the Best Application for an Oil Storage Tank?
The permanent pressure loss is less for an annubar than an orifice flowmeter. -
FeatureWhat Is the Proper Back Pressure Control Valve Type?
To minimize interaction between a back pressure loop and a flow loop in series, the pressure drop should be much greater across the flow control valve. -
FeatureWhat Are Best Practices for Sizing a Pump Recycle Valve?
Recycle valves are used to maintain limited flow through a pump to avoid cavitation under dead-head or low flow conditions. -
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How Do You Handle Manual Operations in Industrial Process Control?
With a requirement for manual action, slow down transitions in manual operations by use of velocity limits on the setpoints of PID and analog output blocks. -
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How Do You Determine a Measurement Is Good Enough for Control?
Often measurement errors are expressed as a percent of full scale and are therefore larger in terms of percent of operating setpoint.