Tag Archive: ratio

Sep
02

Boot Camp for New Employees

In 2012 Emerson Process Management established a boot camp for new employees. In the boot camp I teach the classes on process control. The presentation I use in boot camp is based on material and process examples from our book Control Loop Foundation – Batch and Continuous Processes. The students in the boot camp use …

Continue reading »

May
30

Coordination of Process Areas

To achieve best overall plant operation, it is often necessary to coordinate the operation of equipment in multiple process areas. In Chapter 16 of Control Loop Foundation – Batch and Continuous Processes, several process examples are shown to demonstrate how multi-loop techniques may be effectively used for such coordination. One of these examples is ammonia …

Continue reading »

May
23

Applications – Distillation Control

The fourth workshop in chapter 16 of Control Loop Foundation – Batch and Continuous Processes allows the reader to explore the different features of distillation control. Continuous distillation is used in many industries to separate mixtures of liquids based on differences in their volatility. Within a distillation column, the vapor rising from the bottom of …

Continue reading »

May
16

Applications – Power Boiler Combustion Control

As mentioned in my previous blogs on the book Control Loop Foundation – Batch and Continuous Processes, the application examples included in Chapter 16 illustrate the various ways single loop and multi-loop control techniques may be used automate plant control. The fourth workshop exercise in this chapter allows the reader to explore the different features …

Continue reading »

May
09

Applications – Continuous Chemical Reactor

As mentioned in my previous blogs on the book Control Loop Foundation – Batch and Continuous Processes, the application examples included in Chapter 16 illustrate the various ways single loop and multi-loop control techniques may be used automate plant control. The third workshop exercise in this chapter allows the reader to explore the different features …

Continue reading »

May
02

Applications – Batch Chemical Reactor Control

As mentioned in my previous blogs on the book Control Loop Foundation – Batch and Continuous Processes, the application examples included in Chapter 16 illustrate the various ways single loop and multi-loop control techniques may be used automate plant control. The second workshop exercise in this chapter allows the reader to explore the different features …

Continue reading »

Feb
28

Ratio Control

For many processes, such as blending and boiler combustion, a key objective is to maintain the flow rates of two process streams in some proportion to one another. In such cases, ratio control may be applied. When ratio control is applied, one process input, the dependent input, is proportioned to the other process input, known …

Continue reading »

Nov
22

Control Loop Foundation Class

The book Control Loop Foundation originated from an internal Emerson training class that I put together for new engineers. The Education Services training center located in Austin, TX provided a class room for this training class. I found this to be an ideal training environment for teaching the class since each class room in the …

Continue reading »

Nov
15

Control Loop Foundation Web Site

This week we completed work on the web site for the book Control Loop Foundation. Anyone can access this web site to view and perform the exercises for workshops and applications define in the book – a total of 19 exercises. Since the web site is constructed using HTML5, it may be accessed using a …

Continue reading »

Nov
11

Control Loop Foundation Overview

In a previous blog posting I provided some information about the book Control Loop Foundation co-authored by me and Mark Nixon This ISA publication became available for sale a week before Emerson Exchange 2010. To help promote the book, Mark and I put together an overview of Control Loop Foundation that we presented as a …

Continue reading »