Configure Two-Phase Flow Parameters - Emerson Micro Motion 2700 Configuration And Use Manual

Configure process measurement
Unit description
Degrees API
(1) Non‐standard calculation. This value represents line density divided by the density of water at 4 °C.
4.5.2

Configure two-phase flow parameters

Display
ProLink III
Field Communicator Configure > Manual Setup > Measurements > Density > Slug Low Limit
Fieldbus host
Overview
The two-phase flow parameters control how the transmitter detects and reports two-
phase flow (gas in a liquid process or liquid in a gas process).
Note
Two-phase flow is also referred to as slug flow.
Procedure
1.
2.
34
Display
D API
Not available
Device Tools > Configuration > Process Measurement > Density
Configure > Manual Setup > Measurements > Density > Slug High Limit
Configure > Manual Setup > Measurements > Density > Slug Duration
Diag TB > SLUG_LOW_LIMIT (OD Index 15)
Diag TB > SLUG_HIGH_LIMIT (OD Index 16)
Diag TB > SLUG_TIME (OD Index 14)
Set Two-Phase Flow Low Limit to the lowest density value that is considered normal
in your process.
Values below this will cause the transmitter to post Alert A105 (Two-Phase Flow).
Tip
Gas entrainment can cause your process density to drop temporarily. To reduce the
occurrence of two-phase flow alerts that are not significant to your process, set Two-Phase
Flow Low Limit slightly below your expected lowest process density.
You must enter Two-Phase Flow Low Limit in g/cm³, even if you configured another
unit for density measurement.
Set Two-Phase Flow High Limit to the highest density value that is considered
normal in your process.
Micro Motion recommends leaving Two-Phase Flow High Limit at the default value.
Values above this will cause the transmitter to post Alert A105 (Two-Phase Flow).
Micro Motion Model 2700 Transmitters with FOUNDATION Fieldbus
Label
ProLink III
degAPI
Field Communicator
degAPI