Configure process measurement
Table 5-1
Options for
Mass Flow Measurement Unit
continued
Label
Unit description
Display
ProLink II
Field Communicator
Short tons (2000 pounds)
per hour
ST/H
sTon/hr
STon/h
Short tons (2000 pounds)
per day
ST/D
sTon/day
STon/d
Long tons (2240 pounds)
per hour
LT/H
lTon/hr
LTon/h
Long tons (2240 pounds)
per day
LT/D
lTon/day
LTon/d
Special unit
SPECL
special
Spcl
Define a special measurement unit for mass flow
Display
Not available
ProLink II
ProLink→Configuration→Special Units
Field Communicator
Configure→Manual Setup→Measurements→Special Units→Mass Special Units
A special measurement unit allows you to report process data, totalizer data, and inventory data in a
unit that is not hard-coded in the transmitter. A special measurement unit is calculated from an existing
measurement unit using a conversion factor.
Restriction
Although you cannot define a special measurement unit using the display, you can use the display to
select an existing special measurement unit and to view process data.
Procedure
1.
Specify
Base Mass Unit
.
Base Mass Unit
is the existing mass unit that the special unit will be based on.
2.
Specify
Base Time Unit
.
Base Time Unit
is the existing time unit that the special unit will be based on.
3.
Calculate
Mass Flow Conversion Factor
as follows:
a.
x base units = y special units
b.
Mass Flow Conversion Factor
= x/y
4.
Enter
Mass Flow Conversion Factor
.
5.
Set
Mass Flow Label
to the label to be used for the mass flow unit.
6.
Set
Mass Total Label
to the label to be used for the mass total and mass inventory unit.
The special measurement unit is stored in the transmitter. You can configure the transmitter to use the
special measurement unit at any time.
66
Micro Motion 9739 MVD Transmitters