The Calibrations page provides the functionality to see and edit calibration parameters for all sites within the system. The page is able to show all sites and parameters together or can be filtered to show only those relating to one site, dataset type or parameter type. "Admin" privileges are required to make changes on this page.
The processing or correction of sensor output to meaningful scientific or engineering units is key part of any monitoring system. This process is known as ‘calibration’ and varies from data type to data type, and from instrument to instrument, and will change over time. It is essential therefore that calibration records are available and applied, including which calibration record should be applied over which date and time period.
The ability to enter and maintain calibration records including datum corrections (for water level measurements) is a key feature of Port-Log. These can be applied historically and record of all calibrations is maintained.
Filter Panel
Filter by site name, Dataset type, or Parameter. A combination of the above options can be used to refine the filtering and reduce the number of records on screen. The parameters table will update automatically to show the results of the filter.
Make changes to the values directly into the table. Calibration parameters can be removed by unchecking the "Active" switch in the first column. The columns A-E can be used to construct a calibration curve that is described by the formula:
y=A+Bx+Cx2+Dx3+Ex4.
For simple calibrations which require only some of the formula - leave the unneeded columns populated with a zero, and the B column populated with a one.
Ensure that any changes are applied by clicking the "Submit" button. Changes will apply from the time that they are made.
To apply calibration within specific time periods, click the "Settings" icon in the right hand column.
The calibration settings will open inside a popup but with the addition of field "Valid From" and "Valid To". Enter dates as YYYY/MM/DD HH:SS and click "Submit" to apply changes:
Settings" icon in the right hand column.