Method
Description
Setup
Digital
communications
A host writes pressure data to
the meter at appropriate
intervals.
a. Choose
Configure
>
Manual Setup
>
Measurements
>
Optional Setup
>
External Pressure/Temperature
>
Pressure
.
b. Set
Pressure Compensation
to Enable.
c. Perform the necessary host programming and
communications setup to write pressure data to the
transmitter at appropriate intervals.
14.5 Validate the meter
Display
Menu
>
Configuration
>
Process Measurement
>
Flow Variables
>
Mass Flow Settings
>
Meter Factor
Menu
>
Configuration
>
Process Measurement
>
Flow Variables
>
Volume Flow Settings
>
Meter Factor
Menu
>
Configuration
>
Process Measurement
>
Density
>
Meter Factor
ProLink III
Device Tools
>
Configuration
>
Process Measurement
>
Flow
>
Mass Flow Rate Meter Factor
Device Tools
>
Configuration
>
Process Measurement
>
Flow
>
Volume Flow Rate Meter Factor
Device Tools
>
Configuration
>
Process Measurement
>
Density
>
Density Meter Factor
Field Communicator
Configure
>
Manual Setup
>
Measurements
>
Flow
>
Mass Factor
Configure
>
Manual Setup
>
Measurements
>
Flow
>
Volume Factor
Configure
>
Manual Setup
>
Measurements
>
Density
>
Density Factor
Meter validation compares flowmeter measurements reported by the transmitter to an external
measurement standard. If the transmitter value for mass flow, volume flow, or density measurement is
significantly different from the external measurement standard, you may want to adjust the corresponding
meter factor. The flowmeter’s actual measurement is multiplied by the meter factor, and the resulting value
is reported and used in further processing.
Prerequisites
Identify the meter factor(s) that you will calculate and set. You may set any combination of the three meter
factors: mass flow, volume flow, and density. Note that all three meter factors are independent:
•
The meter factor for mass flow affects only the value reported for mass flow.
•
The meter factor for density affects only the value reported for density.
•
The meter factor for volume flow affects only the value reported for volume flow or gas standard volume
flow.
Important
To adjust volume flow, you must set the meter factor for volume flow. Setting a meter factor for mass flow
and a meter factor for density will not produce the desired result. The volume flow calculations are based on
original mass flow and density values, before the corresponding meter factors have been applied.
If you plan to calculate the meter factor for volume flow, be aware that validating volume in the field may be
expensive, and the procedure may be hazardous for some process fluids. Therefore, because volume is
inversely proportional to density, an alternative to direct measurement is to calculate the meter factor for
volume flow from the meter factor for density. See
Alternate method for calculating the meter factor for
for instructions on this method.
Measurement support
Configuration and Use Manual
March 2019
MMI-20025166
216
Micro Motion Model 5700 Transmitters with Configurable Outputs