In accordance with EN 14181: 2014 (6.5), plants with AMS must comply with the valid calibration interval stated in QAL2/AST.
In practice, this means that the plants must make new QAL2 if more than 40% of the SSTA values in one week are outside the range, or if more than 5 weeks of 5% between QAL2 and AST are outside the range.
When the plant is in operation, it may therefore be relevant for the plant to compare the SSTA values with the valid calibration interval, so that the operator can predict whether a calibration interval will be exceeded.
This function adds visualization of two new elements to the CEMS view. One is an hourly assessment of whether the SSTA value is within the calibration interval. The second is an assessment of how many of the week’s SSTA values are outside the valid calibration range.
The assessments can, as shown on the screen, be displayed as two additional columns, and are visible both on CEMS and via the combined overview. A compact display with alarm lights is also included. The solution is smart, in cases where the calibration interval is desired to be visible, without at the same time using extra space for the two columns.