MVI56E-AFC / MVI69E-AFC ♦ Enhanced Liquid and Gas Flow Computer
Configuring Meter Factors
ControlLogix® and CompactLogix™
Setup and Configuration Guide
ProSoft Technology, Inc.
Page 98 of 151
A meter’s behavior may differ depending on the rate of flow through the meter. That is,
the meter factor may depend on the flow rate at which the measurement is performed.
The EAFC Manager accommodates this by allowing you to enter up to 5 factor-flowrate
pairs (the "Meter Factor Linearization" table); the AFC modules determine the meter
factor to be used by linear interpolation on this table from flow rate at operating
conditions (Since flow rate depends on the meter factor according to API, but meter
factor depends on flow rate according to the linearization table, the AFC module
performs a second iteration of the interpolation in order to obtain an accurate meter
factor).
In the
Meter Factor Linearization Curve
dialog box, click the
R
EAD
button to transfer the
current Meter Factor Linearization configuration from the AFC module to the local PC.
When the Meter Factor Linearization configuration is concluded, click the
W
RITE
button
to transfer it to the AFC module.
The AFC module will use the configuration to interpolate the values so it can use a
specific meter factor depending on the current flow rate.
For example, if you enter four points (flow rate, meter factor) the module would
interpolate the points as shown below:
Summary of Contents for MVI56E-AFC
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