Archive | Process Measurement & Control

ISA Process Measurement & Control Division

How-to-Close-the-Operator-Competency-Gap-in-Process-Industries

How to Close the Operator Competency Gap in Process Industries

Developing and maintaining competent process operators is critical to business performance in the process industries. This blog post, the second part in a two part series, looks at operator competency. In the first post I focused on four signal classes that are leading and lagging indicators of potential competency gaps in process operators. In this […]

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What-Are-Indicators-of-Potential-Competency-Gaps-in-Industrial-Process-Operators

What Are Indicators of Potential Competency Gaps in Industrial Process Operators?

Developing and maintaining competent process operators is critical to business performance in the process industries. This blog post focuses on four signal classes that are leading and lagging indicators of competency gaps in process operators. The evidence of history is that if not addressed, these gaps increase the risk of non-optimal outcomes leading to reduced […]

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benefits-guided-wave-radar-technology

What Are the Benefits of Guided Wave Radar for Level Measurement in Process Industries?

Level is among the most frequently measured process variables in industrial plants. Level readings are used for local indication, process automation and visualization in control systems. Additionally, they are crucial for managing inventory and enforcing safety limits for overfill, leak detection or dry-run protection of pumps. Other applications range from automated ordering systems, to communicating […]

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How to Select a pH Sensor for Harsh Process Environments

For today’s process plants, pH is an important parameter to measure in a host of demanding applications. A good example is flue gas desulfurization (FGD) control with systems using wet scrubbers in lime or limestone slurries. Proper pH can maximize sulfur oxide (SOx) removal and minimize the build-up of scale. Selection of the best sensor […]

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Pressure Meter

How to Select the Optimal Temperature Sensor

In industrial environments, high process temperatures, pressures, and vibration make it necessary to have a robust temperature sensor. Fast response time, accuracy, and stability are also needed. While several types of temperature sensors are available, such as thermistors, infrared pyrometers, fiber optic, and others, the two most commonly used in the process measurement industry are […]

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Chemical plant scientist

What are the Top 10 Mistakes Made Every Day in pH System Design?

Since we learn by example, here is a neutralizer tank that has the major mistakes I have seen in waste treatment system pH design and installation. Each mistake is the result of a fundamental lack of understanding of the heightened sensitivity of pH control systems to dead time, process and measurement noise, insufficient process attenuation […]

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Chemistry Lab Testing pH

What are the Essentials of pH in Industrial Applications?

The pH electrode offers by far the greatest sensitivity and rangeability of any measurement. To make the most of this capability requires an incredible precision of mixing, reagent manipulation, and nonlinear control. pH measurement and control can be an extreme sport. At the neutral point, the concentration of hydrogen and hydroxyl ions is by definition […]

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industrial laser with sparks flying around

How to Use Plant-Wide Feedforward for More Flexible and Efficient Production

The pressure to reduce inventories, coupled with changing market demands and fluctuations in raw material and energy prices, requires a process plant to be able to respond quickly to maintain optimum operation. To most efficiently support changes in production rate or product grade, flows must change in unison throughout the plant. Feedback loops cannot do […]

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Factory control room

What are the Benefits of Identifying Deadtime and Ramp Rate

In Tip #70, we learned that deadtime was the key to loop performance. The Control Talk blog The ABCs of Controller Tuning describes how tuning settings can be reduced to a simple function of deadtime. The InTech article PID Tuning Rules and the article’s online appendices describe the fundamental relationships between deadtime, performance, and tuning. […]

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