Rosemount 8732C - Special Units Configuration

4-5
Transmitter Functions
SPECIAL UNITS
CONFIGURATION
The Model 8732C provides a selection of standard units configurations
that meet the needs of most applications (see Units on page 4-4). If,
however, your application has special needs and the standard
configurations do not apply, the Model 8732C provides the flexibility to
configure the transmitter in a custom-designed units format.
NOTE
For flowtubes larger than 36 inches (900 mm), line size must be
selected prior to configuration of special units. If special units are
configured first, the communication interface may not display the
correct flow rate.
To configure a special unit, set values for each function listed below.
Volume Unit Volume Units enables you to display the volume unit format to which
you have converted the base volume units. For example, if the special
units are abc/min, the special volume variable is abc. This variable is
also used in totalizing the special units flow.
Base Volume Unit Base Volume Unit is the unit from which the conversion is being
made. Set this variable to the appropriate option.
Conversion Number Conversion Number is used to convert base units to special units. For
a straight conversion of volume units from one to another, the
conversion number is the number of base units in the new unit. For
example, if you are converting from gallons to barrels and there are 31
gallons in a barrel, the conversion factor is 31.
Base Time Unit Base Time Unit provides the time unit from which to calculate the
special units. For example, if your special units is a volume per
minute, select minutes.
Flow Rate Unit Flow Rate Unit is a format variable that provides a record of the units to
which you are converting. The HART Communicator and Model 8732C
will display a special units designator as the units format for your primary
variable. The actual special units setting you define will not appear. There
are four characters available to store the new units designation.
Example
Suppose you work for a brewery, and want the Model 8732C to display
flow in barrels per hour. One barrel of beer is equal to 31.0 gallons. You
would set the following:
Volume Unit = BARL.
Base Volume Unit = Gallons.
Input Conversion Number = 31.
Time Base = Hour.
Rate Unit = BR/H.
HART Fast Keys 1, 3, 2, 2, 4
LOI Detailed Setup
HART Fast Keys 1, 3, 2, 2, 1
LOI Detailed Setup
HART Fast Keys
1, 3, 2, 2, 3
LOI
Detailed Setup
HART Fast Keys 1, 3, 2, 2, 2
LOI Detailed Setup
HART Fast Keys
1, 3, 2, 2, 5
LOI
Detailed Setup