Flow Computer Accuracy

In this application note we show that PLC Shift gas and liquid flow computers are extremely accurate and meet industry standards.

 

The overall accuracy of a flow computer has three main components: Algorithmic accuracy, averaging, and accumulations. Algorithmic accuracy is where we ensure that for a given set of inputs, the instantaneous output of the flow computer matches the expected values. This verifies that the flow computer algorithms are correct. Averaging is where we verify that input values are averaged correctly over the various required time spans, like minutes, hours, days, and, in the case of batches, multiple days. Accumulations are where we show that the instantaneous values are added together correctly over the various time spans and the value at the end of the each period is correct.

 

In the following sections, we show that the PLC Shift flow computers are accurate in all of these aspects.