Options for Volume Flow Measurement Unit for liquid applications
The transmitter provides a standard set of measurement units for
Volume Flow Measurement Unit
, plus one
user-defined measurement unit. Different communications tools may use different labels for the units.
Define a special measurement unit for volume flow
Display
Menu
>
Configuration
>
Process Measurement
>
Flow Variables
>
Volume Flow Settings
>
Units
>
SPECIAL
ProLink III
Device Tools
>
Configuration
>
Process Measurement
>
Flow
>
Volume Flow Rate Unit
>
Special
Field Communicator
Configure
>
Manual Setup
>
Measurements
>
Optional Setup
>
Special Units
>
Volume Special Units
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 Volume Unit
.
Base Volume Unit
is the existing volume 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
Volume Flow Conversion Factor
as follows:
a) x base units = y special units
b)
Volume Flow Conversion Factor
= x ÷ y
4. Enter
Volume Flow Conversion Factor
.
The original volume flow rate value is divided by this conversion factor.
5. Set
Volume Flow Label
to the name you want to use for the volume flow unit.
6. Set
Volume Total Label
to the name you want to use for the volume total and volume 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 volume flow
You want to measure volume flow in pints per second (pints/sec).
1. Set
Base Volume Unit
to Gallons (gal).
2. Set
Base Time Unit
to Seconds (sec).
3. Calculate the conversion factor:
a. 1 gal/sec = 8 pints/sec
b.
Volume Flow Conversion Factor
= 1 ÷ 8 = 0.1250
4. Set
Volume Flow Conversion Factor
to
0.1250
.
Configure process measurement
Configuration and Use Manual
April 2019
MMI-20048166
30
Micro Motion 4200 Transmitters