Category Archive: Uncategorized

Feb
19

Display content – part 2

A mistake often made with operator displays is to limit the scope of the design work to mimic the process equipment shown on P&IDs and Process Flow Diagrams (PFDs). These initial displays include measurements, valves and final control elements. They include enough of the process equipment and piping so that the process flow can be …

Continue reading »

Feb
12

Display content – part 1

Last week the topic was mobile. The discussion focused on different views such as display lists and alarm lists. These views provide the user with information specific to what they are interested in. In the last blog I said I would talk about display content.  To begin this discusstion I’ll start with a refinery and …

Continue reading »

Feb
03

DeltaV Mobile

In process manufacturing the operator station allows operators to rapidly assess a set of distinct systems or situations under their span-of-responsibility and determine where attention is needed on a moment-by-moment basis. If a problem exists, the features of the operator station directs the operators to displays from which they can troubleshoot and take action. So …

Continue reading »

May
14

Future Perspectives of PID Control

A panel on Future Perspectives of PID Control of was the highlight of the second day of the IFAC PID’12 conference. The panel chairman was Professor Karl Astrom who is widely known throughout the control community for his many contributions in process control. Willy Wojsznis was the speaker on the panel from Emerson. The short …

Continue reading »

Apr
23

Control Using Wireless Devices – Conclusions

Field experience using WirelessHART in control applications may be summarized in the following manner: WirelessHART measurements may be used in closed loop control applications.  Window communications mode minimizes power consumption PIDPlus is a standard feature of DeltaV and works with standard WirelessHART devices.  Standard DeltaV Tools support Simulation and Tuning. The performance of PIDPlus in …

Continue reading »

Jan
12

How to Succeed – Part 9

To support the check list in part 8 to get the most out of your PID, we offer some of the considerations in the use of PID features. The number of PID options and parameters can seem overwhelming at first. Hopefully the knowledge gained here will foster an appreciation of the flexibility and capability leading to a …

Continue reading »

Nov
17

How to Succeed – Part 2

Our profession is learned on the job by example and ad-hoc, incidental, or formal mentoring. Experienced APC and E&I engineers have largely left the building. In the new millennium we started a runaway reaction with an accelerating loss of expertise. Are we at a “point of no return?” Is the demise of our profession at …

Continue reading »

Jun
13

Power House Steam Generation

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, some examples are given where multi-loop techniques may be effectively used for such coordination. One of the examples from this chapter is power …

Continue reading »

May
11

test

test

Apr
18

Hello world!

Welcome to WordPress. This is your first post. Edit or delete it, then start blogging!

Older posts «