MVI56E-AFC / MVI69E-AFC ♦ Enhanced Liquid and Gas Flow Computer
Configuring Common Parameters
ControlLogix® and CompactLogix™
Setup and Configuration Guide
ProSoft Technology, Inc.
Page 77 of 151
Parameters whose values may depend on the properties of the product being measured
are configured for each stream separately. Such parameters include product
descriptions (e.g. density, viscosity, analysis) and those that describe indirect effects of
the product (e.g. meter factor). Measurement calculations always use the parameters for
the active stream.
The output of each stream consists of a complete set of accumulators laid out like those
of the meter itself. Computed increments are accumulated simultaneously in both the
meter accumulators and those of the active stream.
Stream Option
Definition
Default heating
value is volumetric
If this option is set, then the point “Default heating value” is configured in
volumetric units (energy per volume at reference conditions); if clear, then the
point is considered in mass units (energy per mass).
Note: You can also make the default heating value volumetric by selecting the Volumetric
checkbox in the Stream Component Analysis dialog.
Use meter factor to
full precision (non-
Standard)
If "Use meter factor to full precision" is clear, the Meter Factor is rounded to four
decimal places before being used to calculate gross volume (gross = pulses /
KF * MF). If the option is set, the MF is used as is without rounding. Rounding
applies only to the meter factor; the K-factor is always used to its full precision.
Interpolate K-factor
This option bit swaps the roles of K-factor and meter factor, so that when this
option is selected, the "K-factor" entry becomes "Meter factor" and the "Meter
Factor Linearization" table becomes "K-factor Linearization".
The calculations described up to this point are those recommended by API and
performed by the vast majority of users of linear meters. Some users, however,
may prefer to keep the meter factor at exactly 1.0000 and periodically adjust the
K-factor with a meter prove; and then the K-factor may depend on the flow rate.
Stream Enable
Select to enable the current stream. Unselect (uncheck) to disable the current
stream. A disabled stream cannot be made active. When downloading the
configuration to the module, this option is silently forced for the active stream.
Summary of Contents for MVI56E-AFC
Page 78: ......
