Options for Gas Standard Volume Flow Measurement Unit
The transmitter provides a standard set of measurement units for
Gas Standard Volume Flow Measurement
Unit
, plus one user-defined special measurement unit. Different communications tools may use different
labels for the units.
Define a special measurement unit for gas standard volume flow
Display
Menu
>
Configuration
>
Process Measurement
>
Flow Variables
>
Volume Flow Settings
>
Units
>
SPECIAL
ProLink III
Device Tools
>
Configuration
>
Process Measurement
>
Flow
>
Gas Standard Volume Flow Unit
>
Special
Field Communicator
Configure
>
Manual Setup
>
Measurements
>
Optional Setup
>
Special Units
>
Special Gas Standard
Volume 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 Gas Standard Volume Unit
.
Base Gas Standard Volume Unit
is the existing gas standard 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
Gas Standard Volume Flow Conversion Factor
as follows:
a) x base units = y special units
b)
Gas Standard Volume Flow Conversion Factor
= x ÷ y
4. Enter the
Gas Standard Volume Flow Conversion Factor
.
The original gas standard volume flow value is divided by this conversion factor.
5. Set
Gas Standard Volume Flow Label
to the name you want to use for the gas standard volume flow
unit.
6. Set
Gas Standard Volume Total Label
to the name you want to use for the gas standard volume total
and gas standard 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 gas standard volume flow
You want to measure gas standard volume flow in thousands of standard cubic feet per minute.
1. Set
Base Gas Standard Volume Unit
to SCFM.
2. Set
Base Time Unit
to minutes (min).
3. Calculate the conversion factor:
a. One thousands of standard cubic feet per minute = 1000 cubic feet per minute
Configure process measurement
Configuration and Use Manual
April 2019
MMI-20048166
34
Micro Motion 4200 Transmitters