Unit description
Label
Display
ProLink III
Field communicator
Degrees API
D API
degAPI
degAPI
Special unit
SPECL
special
Spcl
Define a special measurement unit for density
ProLink III
Device Tools
→
Configuration
→
Process Measurement
→
Line Density
→
Special Units
Field communicator
Configure
→
Manual Setup
→
Measurements
→
Optional Setup
→
Special Units
A special measurement unit is a user-defined unit of measure that allows you to report process data in a unit
that is not available in the transmitter. A special measurement unit is calculated from an existing
measurement unit using a conversion factor.
Procedure
1. Specify
Density Special Unit Base
.
Density Special Unit Base
is the existing density unit that the special unit will be based on.
2. Calculate
Density Special Unit Conversion Factor
as follows:
a) x base units = y special units
b)
Density Special Unit Conversion Factor
= x÷y
3. Enter
Density Special Unit Conversion Factor
.
The original density value is divided by this conversion factor.
4. Set
User-Defined Label
to the name you want to use for the density unit.
The special measurement unit is stored in the transmitter. You can configure the transmitter to use the
special measurement unit at any time.
Defining a special measurement unit for density
You want to measure density in ounces per cubic inch.
1. Set
Density Special Unit Base
to g/cm3.
2. Calculate
Density Special Unit Conversion Factor
:
a. 1 g/cm3 = 0.578 oz/in3
b. 1÷0.578 = 1.73
3. Set
Density Special Unit Conversion Factor
to
1.73
.
4. Set
User-Defined Label
to
oz/in3
.
8.1.2 Configure Density Damping using a field communicator
Field communicator
Configure
→
Manual Setup
→
Measurements
→
Density
→
Density Damping
Configure process measurement using a field communicator
Configuration and Use Manual
March 2021
MMI-20020954
66
Micro Motion Gas Specific Gravity Meters (SGM)