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ISA provides technical resources and standards to help industrial automation professionals advance their careers and the field. We enable automation professionals worldwide to solve problems and enhance their skills by bringing people together to create new technologies and share best practices with future automation professionals.-
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Author Profile
Joel Don
344 Results Found
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FeatureAutoQuiz: Why Must Voltage Be Reduced Along with Frequency in a Variable Frequency Speed Controller?
To maintain a constant (rated) flux density, the applied voltage must also be changed in the same proportion as the frequency (per Faraday’s law). -
FeatureAutoQuiz: What Process Confirms That a Company Meets the Needs of Customers and Complies With Statutory and Regulatory Requirements?
ISO 9000 is a family of international quality management systems standards designed to help organizations ensure that they meet the needs of customers and other stakeholders while meeting statutory an -
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AutoQuiz: What is “Slip” in an AC Induction Motor?
Slip is usually expressed as a percentage, and varies by motor, from nominally 0.5 percent for very large motors to about 5 percent for small, specialized motors.. -
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AutoQuiz: What Factors Affect the Reynolds Number for a Flowing Fluid?
The Reynolds Number for a flowing fluid can be generalized as the ratio of kinetic (or inertial) forces divided by viscous forces. -
FeatureAutoQuiz: Identify Three Levels Within the Manufacturing Computer Systems Hierarchy
The manufacturing computer systems hierarchy is defined in ISA-88 and ISA-95 by Level 0 through Level 4. -
FeatureAutoQuiz: What Are the Limitations of an Analog Multimeter?
An analog voltmeter works by passing a current through a coil that is suspended between two permanent magnets. -
FeatureAutoQuiz: How Are the Maintainability and Maintenance of Automation Systems Related?
Maintainability is the probability that a device will be restored to an operating condition within a specified period when maintenance is done with prescribed resources and procedures. -
FeatureAutoQuiz: How to Use the Parity System to Detect Data Transmission Errors
Parity is a simple method using a binary code (“1” or “0”) to detect data transmission errors by making the sum of the “1” bits in the source data either an odd or an even number. -
FeatureAutoQuiz: What Electrical Event Can Occur With a 24 VDC Open-Collector Output Sinking Configuration?
An NPN (sinking) open-collector, when “energized,” switches the load side of the relay (at terminal “A”) to ground (terminal “B”). -
FeatureAutoQuiz: What Device Is Used to Convert an Analog Signal From a Transmitter to the Signal Required by a Digital Controller?
A digital controller requires a digital signal as its input. A 4-20 mA transmitter outputs an analog signal. Therefore, a device to convert an analog (A) signal to a digital (D) is required. -
FeatureAutoQuiz: What Are the NPV and IRR Methods for Evaluating Industrial Automation System Capital Investments?
Net present value (NPV) by itself is not a good indicator of the viability of a project or a good differentiator between two competing projects. -
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AutoQuiz: What Is the Logical Analysis Troubleshooting Method for an Industrial Process?
Once a problem is identified in an industrial process, data must be gathered and analyzed to determine a viable set of potential actions and solutions. -
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AutoQuiz: What Should an Engineer Include in a Final Automation Project Report to Senior Management?
An executive summary and bullet-item lists for an automation project allows managers them to understand the basic outcomes and conclusions of your project. -
FeatureAutoQuiz: What Is the Purpose of an Instrument Location Plan?
Instrument location plans are most often used to support new plant installations and give the installer information about the actual physical location of the installation of an instrument. -
FeatureAutoQuiz: What Is the Significance of the Fieldbus Intrinsic Safety Concept?
The fieldbus intrinsic safety concept simplifies the rules governing energy storage in field cables and makes more power available to the fieldbus trunk. -
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AutoQuiz: Which Valve Actuation Method Is Best for a Very Large Force and a Small Actuator?
Hydraulic actuators are driven by a high-pressure fluid (up to 4,000 psig) that can be delivered to the actuator by a pump that is remote from the actuator itself. -
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AutoQuiz: What Are the Benefits of Self-Study Workbooks for Operator Training?
Self-study workbooks ensure that all students have been exposed to the same learning objectives and material. -
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AutoQuiz: How are Pressure Changes Measured in Industrial Applications?
For most pressure applications, changes in pressure are detected by the change in deflection of a measuring diaphragm. -
FeatureAutoQuiz: What Are the Cybersecurity Risks to a Geothermal Plant?
Automation systems are vulnerable to many cybersecurity risks, but email viruses pose the least risk to disrupt operations and create an emergency situation. -
FeatureAutoQuiz: Technical Characteristics of the Open Systems Interconnection Model
The presentation layer for protocols used in control systems provides the translation of data received into a usable format, such as binary data from a programmable logic controller into floating poin
