Configure process measurement
Table 5-9
Options for
Density Measurement Unit
Label
Unit description
Display
ProLink II
Field Communicator
Specific gravity unit (not
temperature-corrected)
SGU
SGU
SGU
Grams per cubic
centimeter
G/CM3
g/cm3
g/Cucm
Grams per liter
G/L
g/l
g/L
Grams per milliliter
G/mL
g/ml
g/mL
Kilograms per liter
KG/L
kg/l
kg/L
Kilograms per cubic meter
KG/M3
kg/m3
kg/Cum
Pounds per U.S. gallon
LB/GAL
lbs/Usgal
lb/gal
Pounds per cubic foot
LB/CUF
lbs/ft3
lb/Cuft
Pounds per cubic inch
LB/CUI
lbs/in3
lb/CuIn
API gravity
D API
degAPI
degAPI
Short ton per cubic yard
ST/CUY
sT/yd3
STon/Cuyd
5.6.2
Configure slug flow parameters
Display
Not available
ProLink II
ProLink→Configuration→Density→Slug High Limit
ProLink→Configuration→Density→Slug Low Limit
ProLink→Configuration→Density→Slug Duration
Field Communicator
Configure→Manual Setup→Measurements→Density→Slug Low Limit
Configure→Manual Setup→Measurements→Density→Slug High Limit
Configure→Manual Setup→Measurements→Density→Slug Duration
The slug flow parameters control how the transmitter detects and reports two-phase flow.
Procedure
1.
Set
Slug Low Limit
to the lowest density value that is considered normal in your process.
Values below this will cause the transmitter to perform the configured slug flow action. Typically,
this value is the lowest density value in the normal range of your process.
Tip
Gas entrainment can cause your process density to drop temporarily. To reduce the occurrence
of slug flow alarms that are not significant to your process, set
Slug Low Limit
slightly below your
expected lowest process density.
You must enter
Slug Low Limit
in g/cm
3
, even if another unit has been configured for density
measurement.
The default value for
Slug Low Limit
is 0.0 g/cm
3
. The range is 0.0 g/cm
3
to 10.0 g/cm
3
.
Configuration and Use Manual
85