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A special measurement unit is a user-defined unit of measure that allows you to report process data, totalizer
data, and inventory 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
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
.
The original mass flow rate value is divided by this value.
5. Set
Mass Flow Label
to the name you want to use for the mass flow unit.
6. Set
Mass Total Label
to the name you want to use 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.
Defining a special measurement unit for mass flow
You want to measure mass flow in ounces per second (oz/sec).
1. Set
Base Mass Unit
to Pounds (lb).
2. Set
Base Time Unit
to Seconds (sec).
3. Calculate
Mass Flow Conversion Factor
:
a. 1 lb/sec = 16 oz/sec
b.
Mass Flow Conversion Factor
= 1 ÷ 16 = 0.0625
4. Set
Mass Flow Conversion Factor
to
0.0625
.
5. Set
Mass Flow Label
to
oz/sec
.
6. Set
Mass Total Label
to
oz
.
4.2.2 Configure Flow Damping
Display
Menu
>
Configuration
>
Process Measurement
>
Flow Variables
>
Flow Damping
ProLink III
Device Tools
>
Configuration
>
Process Measurement
>
Flow
>
Flow Rate Damping
Field Communicator
Configure
>
Manual Setup
>
Measurements
>
Flow
>
Flow Damping
Configuration and Use Manual
Configure process measurement
MMI-20048166
April 2019
Configuration and Use Manual
25
Содержание Micro Motion 4200
Страница 144: ...Measurement support Configuration and Use Manual April 2019 MMI 20048166 144 Micro Motion 4200 Transmitters ...
Страница 210: ...Using the transmitter display Configuration and Use Manual April 2019 MMI 20048166 210 Micro Motion 4200 Transmitters ...
Страница 218: ...Channel combinations Configuration and Use Manual April 2019 MMI 20048166 218 Micro Motion 4200 Transmitters ...