Overview
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.
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.
Example: 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: 1 g/cm3 = 0.578 oz/in3
3. Set Density Special Unit Conversion Factor to 0.578.
4. Set User-Defined Label to oz/in3.
4.2.2 Configure Density Damping
Display Not available
ProLink III Device Tools > Configuration > Process Measurement > Line Density > Density Damping
Field Communicator Configure > Manual Setup > Measurements > Density > Density Damping
Overview
Density Damping controls the amount of damping that will be applied to the line density
value.
Damping is used to smooth out small, rapid fluctuations in process measurement. Damping
Value specifies the time period (in seconds) over which the transmitter will spread changes
in the process variable. At the end of the interval, the internal value will reflect 63% of the
change in the actual measured value.
Configure process measurement
22 Micro Motion
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Fork Density Meters (FDM)
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