HF scientific Online SCADA System - Manual (Page 20)

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Alarm Status: The Alarm Status field will display one of the following values:
Warning Status: This field will display one of the following values:
Bar Chart: A bar chart is provided to display the turbidity value. The scale value
is user defined and is based on the upper and lower limits of the device. Please
refer to the Edit Device Dialog Box section later in this chapter. The following
color scheme is used for the bar:
3.4 HyperTrend
The HyperTrend displays the turbidity value of the device in a chart form. The
user can scroll backward and forward using the scroll keys provided. When the
indicator located on the upper right corner is green, the right end of the chart
displays the current value and the chart is ‘on’. When the indicator is red, the
HyperTrend is ‘stopped’ (Note: Lookout continues to log the data to the historical
database). With the HyperTrend in the ‘stopped’ position, the chart displays a date
and time value. Clicking on the date/time values on the upper end of the numbers
advances the values while clicking on the lower end of the numbers decreases the
values. For example, clicking on the lower end of the month value reduces it by
one. The chart would therefore be displaying the turbidity values for the same
time in the previous month. This very powerful feature allows the user to search
and view specific data almost instantly. The HyperTrend also features a cursor,
which can be used to view specific values as well as for statistical functions such
as Break/Min/ Max. The scale of the trend is user defined as in the case of the bar
chart and is dependent on the upper and lower limits of the device. Please refer to
the Edit Device Dialog Box section later in this chapter. The user can also define
the trend span by clicking on the Trend Span push button.
Alarm Status Description
Hi Alarm Device value is greater than the computer based Hi Alarm limit.
HiHi Alarm Device value is greater than the computer based HiHi Alarm limit.
Alarm 1 Device Alarm Status is “Alarm 1”.
Alarm 2 Device Alarm Status is “Alarm 2”.
Normal Turbidity value is within normal range.
Disabled Limit alarming is not selected.
Warning
Status Description
Low-Flow Device Warning Status is “Low Flow”.
Normal No Low Flow warnings exist.
Bar Color Description
Blue Normal
Cyan
Device is in “Set-Up” or “Calibrate” mode.
Yellow Communication failure.
Red Alarm condition.