This website does not use cookies. Read Privacy Policy here.
Beville Engineering Logo

Data Entry


I know of more than one example of an operator entering the wrong value into the DCS. As it turns out, the process industries are not unique in this regard. A recent study on medical devices (Wiseman, S., Cox, Anna, and Brumby, D. “Designing Devices with the Task in Mind: Which Numbers Are Really Used in Hospitals?” Human Factors , Vol 55, No 1, 2013 pp. 6174) was prompted by data entry error with fusion pumps. While the researchers developed criteria for medical data devices , one suggestion might have applicability for process control. This was the use of a scroll wheel (see picture) which limits errors due to failure to enter a value or have the value not take. Cases of failing to sufficiently depress a key, so that 500 becomes 50, or depressing a key too often, so that 50 becomes 500, would not happen with a scroll wheel.

Scroll Wheel Example for Displays

Copyright © 2013 Beville Engineering, Inc., All Rights Reserved

For further information, visit the links below.

| Alarm & Display System Analysis Overview | Alarm Management | Display Design | Alarm & Display Design Seminar | Beville Shape Calculator -Excel download | Alarm Distribution Estimator -Excel download |


Article Published By
Consortium Reports New Findings on Alarm Rates Automation World
How Many Alarms Can An Operator Handle Chemical Processing
Impact of Alarm Rates and Interface Design on Operator Performance Automation World
Operator Interfaces: Moving from Comfortable to Most Effective Automation World
Operator Performance as a Function of Alarm Rate and Interface Design


This year's Fall meeting for the Center for Operator Performance will be October 7-10 in Houston, TX. For more information, please contact Lisa Via. Guests are always welcome!


Our summer newsletter is now available. Click here!

Take our short survey on operator span of control. Click here (new window)

David Strobhar's book, "Human Factors in Process Plant Operation," is now available in both hardcover and Kindle e-book.

Copyright © 1996-2019 Beville Engineering, Inc. All rights reserved. (937)434-1093.