Trend Analysis - ABB CalMaster2 Instruction Manual

Field and Software Tools
CalMaster2 and CheckMaster

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
'Next'.
2. On the right-hand side of the Review Records dialog box, click the
analysis dialog box appears:
a
The graph functions are:
a
Group/Individual Tests
Select whether to display an individual test or a group of tests.
b
Test
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.
36
button to start the CalMaster2 wizard, select 'Review Records' and click
b c d e f
5 CalMaster2 IRIS Software
button. The trend
IM/VCM2 Issue 6