Viewing Events On A Trend - Honeywell Experion LX Operator's Manual

Displaying detailed process information
Scale
Description
option
each plot individually. Values that fall outside this scale are not visible in the trend.
The scale represents the point parameter range in percentage terms. A scale of 0% to
scales in
100% shows the full range of the point parameter and correlates to the minimum and
%
maximum value for the point parameter. You may want to increase or decrease the
scale, depending on the range of your point and the actual historical values of the
point.
Single One scale is used for all points in the trend. You specify the maximum and minimum
scale for value that will be shown on the trend. Values that fall outside this scale are not visible
all plots in the trend.
Auto
scale Adjusts the selected plot so that it is centered vertically in the chart and scaled such
current that the plot uses most of the vertical chart space.
plot
Auto
Adjusts all plots that are currently visible so that they are centered vertically in the
scale all
chart and scaled such that each plot uses most of the vertical chart space.
plots
Scale to
point The scale is set so that it correlates with the maximum and minimum point parameter
ranges in range of all points in the trend and is shown in engineering units.
EU
Scale to The scale is set so that it correlates with the maximum and minimum point parameter
point range of all points in the trend and is shown in percentage terms. The minimum point
ranges in parameter value is always 0% and the maximum point parameter value is always
% 100%.
Revert to
The scale options is restored to what was last saved for the trend. Any changes to the
saved
scale that were not saved are removed.
ranges

Viewing events on a trend

You can view events with your trend to help you analyze the relationship between alarms and
events and changes in point values in your trend.
Attention:
This topic is not applicable to limit trends.
Honeywell 2017 230