Historical K Factor Linearisation
The historical meter linearity chart will plot the K factor against the flow rate, with points displayed by each prove.
Each point is plotted from the historical database for the selected meter/product combination.
A polynomial curve will also be plotted showing the best fit for all the points on the chart along with 2 other curves showing the upper and lower limits. The upper and lower limits are based on 2 standard deviations (although this can be modified in the preference screens).
To print the current chart data, click 'Print'. The chart prints on your default printer as set by your operating system.
Settings
To configure the chart, click 'Settings'.
| Field | Description |
| Line Colours | Set line colours from a palette to the desired graph property |
| X Axis Data | Set the X Axis to plot either Frequency or Flow Rate |
| Limit Offset | Set the Limit Offset to either Standard Deviation or Defined Offset |
| Curve Degree | Set the degree of the polynomial to 3 or 2 |