|
RECENT NEWS |
|
Beville
Engineering, in conjunction with Wright State
University, is proud to announce the debut of the
Center for Operator Performance.
The Center is an alliance of
academic and process companies to research generic
issues in human factors and process operator
performance. Visit the
website for more information. |
|
OUR METHOD |
|
Our approach is one
of tailoring our services to our clients' needs, rather
than trying to adjust our clients to fit our methods.
We implement an on-site, "hands-on"
approach to gauge the causes of problems, and then seek
to solve the problems through the manipulation of
various workload and human performance variables.
|
|
ON-SITE AUDIT |
|
One day on-site plant audit now
available.
View info. |
|
OUR NEWSLETTER
View it |
|
Shape Calculator
Calculate Required Shape Heights in Inches and Pixels
 |
At a
constant visual angle, increasing screen size and
distance effects can be calculated. |
|
Screen |
Distance |
|
|
(inches) |
(inches) |
Ratio |
|
21 |
20 |
1.05 |
|
40 |
52 |
.77 |
|
90 |
120 |
.75 |
|
90 |
240 |
.38 |
|
For: |
Recommended Visual Angle: |
Rapid and accurate legibility of a
single character.
Examples: Parameter types, static display text, alarm
priority. |
11-12 minutes of arc |
Comfortable reading.
Examples: PV, OP, other live process data |
16-18 minutes of arc |
Calculate Shape Heights:
|
|
OUR SERVICES 
