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Thermo Fisher Scientific
Figure 6–7. Horizontal trend: History definition
a. History: Enable or disable (On/Off) the history function.
b. Background Review Color: Assign a color to the history review
background that enables you to differentiate between history and
normal trend screens.
c. Parameters block:
i. Store Data:
Data Type: The recorder can store data as the actual Value, as
the Average of all readings from one history sample to the next,
as the minimum (Min) value, or as the maximum (Max) value.
Figure 6–8. History Definition screen: Data store type
Boundary: A point store boundary function can be set for the
points assigned to the screen. This allows you to set a level
where the point will not be stored unless it exceeds the
boundary. The boundary is set in absolute engineering units,
|units|, and is bipolar.
ii. Trigger: There are three ways to trigger the recorder to store
history: at a set interval, when an alarm activates, or when an
external switch input (Event) closes. The following explains
how to set each trigger type.
Screen Types
Horizontal & Vertical Trend Screens
SV100A/SV10AC User Guide
6-5
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Troubleshooting
