Field and Software Tools
CalMaster2 and CheckMaster 5 CalMaster2 IRIS Software
36 IM/VCM2 Issue 6
5.8 Trend Analysis
The trend analysis graph displays how the flow meter has performed over time. Each time a flow
meter is verified the results are stored and compared to previous verifications. In this way a visual
representation of the flow meter's performance is generated. At a glance, It can be seen whether
the flow meter's performance is deteriorating and, if so, plan appropriate maintenance at a
convenient time.
To start trend analysis:
1. Click the button to start the CalMaster2 wizard, select 'Review Records' and click
'Next'.
2. On the right-hand side of the Review Records dialog box, click the button. The trend
analysis dialog box appears:
The graph functions are:
a Group/Individual Tests
Select whether to display an individual test or a group of tests.
b Te st
Select the test to be displayed.
c Graph Type
Select the type of graph to be displayed. Options are: Data, Quality, Data Score and Quality
Score.
d Number of Decimal Places
Select the number of decimal places to be displayed.
e Show/Hide Trend Limits
If selected, this displays horizontal lines delimiting the upper and lower trend limits.
f Graph Options
This opens the graph options dialog box – see sections 5.8.1 to 5.8.4.
Note. To zoom into any area of the graph click and drag a box in the graph area.
Double-click to zoom out.
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