Checking for backflow
You suspect that there is a significant amount of backflow through the sensor. To collect data, configure two
totalizers as follows:
•
Source
=Mass Flow,
Direction
=Forward Only
•
Source
=Mass Flow,
Direction
=Reverse Only
Reset both totalizers, allow them to run for an appropriate period, then look at the amount of reverse flow as
a percentage of forward flow.
Tracking three different process fluids
Three tanks are connected to a loading dock through a single meter. Each tank contains a different process
fluid. You want to track each process fluid separately.
1. Set up three totalizers, one for each tank.
2. Name the totalizers
Tank 1
,
Tank 2
, and
Tank 3
.
3. Configure each totalizer as required for the corresponding process fluid.
4. Stop and reset all three totalizers to ensure that the beginning values are 0.
5. When loading from a tank, start the corresponding totalizer, and stop it when the load is finished.
6.5.1 Default settings for totalizers and inventories
Totalizer or
inventory
Source (process variable
assignment)
Direction
Name of totalizer
Name of inventory
1
Mass flow
Forward Only
Mass Fwd Total
Mass Fwd Inv
2
Volume flow
Forward Only
Volume Fwd Total
Volume Fwd Inv
3
Temperature-corrected volume
flow
Forward Only
API Volume Fwd Total
API Volume Fwd Inv
4
Gas standard volume flow
Forward Only
GSV Fwd Total
GSV Fwd Inv
5
Standard volume flow
Forward Only
Standard Vol Fwd Total
Standard Vol Fwd Inv
6
Net mass flow
Forward Only
Net Mass Fwd Total
Net Mass Fwd Inv
7
Net volume flow
Forward Only
Net Vol Fwd Total
Net Vol Fwd Inv
6.6 Configure logging for totalizers and inventories
Display
Menu
>
Configuration
>
Totalizer Log
ProLink III
Device Tools
>
Configuration
>
Totalizer Log
Configuration and Use Manual
Configure advanced options for process measurement
MMI-20025166
March 2019
Configuration and Use Manual
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