Reverse flow calculation for calibration calculations
The reverse flow calculation is used to perform the input
limits and output tolerance calculations for linear assets, for example
flow indicators in reverse flow.
You select the Reverse Flow check
box to use this calculation.
The formula for calculating desired
output is included in the following equations.
The following
figure shows the desired output calculation:Figure 1. Desired output calculation
Table 1. Single squared equation for reverse flow
Criterion
Description
Squared equations
EU
When the Reverse Flow check
box is selected, the squared equation is used for the engineering
unit criterion.
%Span
When the Reverse Flow check
box is selected, the squared equation is used for the %Span criterion.
%URV
When the Reverse Flow check
box is selected, the squared equation is used for the %URV criterion.
%Reading
When the Reverse Flow check
box is selected, the squared equation is used for the %Reading criterion.
Figure 2. Summed squared equations. This equation calculates the reverse flow for summed squared
criteria.