Configure process measurement
t
Example: Cutoff interaction
Configuration:
•
mA Output Process Variable
for the primary mA output:
Mass Flow Rate
•
Frequency Output Process Variable
:
Mass Flow Rate
•
AO Cutoff
for the primary mA output:
15
grams/second
•
Mass Flow Cutoff
:
10
grams/second
Result:
• If the mass flow rate drops below 15 grams/second but not below 10 grams/second:
− The primary mA output will report zero flow.
− The frequency output will report the actual flow rate, and the actual flow rate will be used
in all internal processing.
• If the mass flow rate drops below 10 grams/second, both outputs will report zero flow, and 0 will
be used in all internal processing.
5.3
Configure volume flow measurement for liquid
applications
Display
OFF-LINE MAINT→OFF-LINE CONFG→UNITS→VOL
ProLink II
ProLink→Configuration→Flow
Field Communicator
Configure→Manual Setup→Measurements→Flow
The volume flow measurement parameters control how liquid volume flow is measured and reported.
The volume flow measurement parameters include:
•
Volume Flow Type
•
Volume Flow Measurement Unit
•
Volume Flow Cutoff
Restriction
You cannot implement both liquid volume flow and gas standard volume flow. You must choose one or
the other.
5.3.1
Configure
Volume Flow Type
for liquid applications
Display
OFF-LINE MAINT→OFF-LINE CONFG→VOL→VOL TYPE LIQUID
ProLink II
ProLink→Configuration→Flow→Vol Flow Type→Liquid Volume
Field Communicator
Configure→Manual Setup→Measurements→Gas Standard Volume→Volume Flow Type→Liquid
Volume Flow Type
controls whether liquid or gas standard volume flow measurement will be implemented.
Configuration and Use Manual
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