Configure process measurement
Effect of
Flow Damping
on volume measurement
Flow Damping
effects volume measurement for both liquid volume and gas standard volume. Volume data
is calculated from the damped mass flow data rather than the measured flow value.
Interaction between
Flow Damping
and
Added Damping
Flow Damping
controls the rate of change in flow process variables.
Added Damping
controls the rate of
change reported via the mA output. If
mA Output Process Variable
is set to
Mass Flow Rate
, and both
Flow
Damping
and
Added Damping
are set to non-zero values, flow damping is applied first, and the added
damping calculation is applied to the result of the first calculation.
5.2.3
Configure
Mass Flow Cutoff
Display
Not available
ProLink II
ProLink→Configuration→Flow→Mass Flow Cutoff
Field Communicator
Configure→Manual Setup→Measurements→Flow →Mass Flow Cutoff
Mass Flow Cutoff
specifies the lowest mass flow rate that will reported as measured. All mass flow rates
below this cutoff will be reported as
0
.
Procedure
Set
Mass Flow Cutoff
to the desired value.
The default value for
Mass Flow Cutoff
is 0.0 g/s. The recommended setting is 0.05% of the sensor's
rated maximum flow rate.
Effect of
Mass Flow Cutoff
on volume measurement
Mass Flow Cutoff
does not affect volume measurement. Volume data is calculated from the actual mass
data rather than the reported value.
Interaction between
Mass Flow Cutoff
and
AO Cutoff
Mass Flow Cutoff
affects all reported values and values used in other transmitter behavior (e.g., events
defined on mass flow).
AO Cutoff
affects only mass flow values reported via the mA output.
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:
10
grams/second
•
Mass Flow Cutoff
:
15
grams/second
Result: If the mass flow rate drops below 15 grams/second, mass flow will be reported as 0, and 0
will be used in all internal processing.
68
Micro Motion 9739 MVD Transmitters
Содержание Micro Motion 9739 MVD
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Страница 30: ...Quick start with the display OFFLINE MAINT RESTORE ZERO RESTORE YES 24 Micro Motion 9739 MVD Transmitters ...
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Страница 207: ...Appendices and reference ...
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Страница 230: ...Using the transmitter display Figure C 4 Offline menu version information 224 Micro Motion 9739 MVD Transmitters ...
Страница 231: ...Using the transmitter display Figure C 5 Offline menu configuration units and I O Configuration and Use Manual 225 ...
Страница 233: ...Using the transmitter display Figure C 7 Offline menu configuration display Configuration and Use Manual 227 ...
Страница 234: ...Using the transmitter display Figure C 8 Offline menu Simulation loop testing 228 Micro Motion 9739 MVD Transmitters ...
Страница 236: ...Using the transmitter display Figure C 10 Offline menu Zero 230 Micro Motion 9739 MVD Transmitters ...
Страница 239: ...Using ProLink II with the 9739 MVD transmitter Figure D 2 Configuration menu Configuration and Use Manual 233 ...
Страница 241: ...Using ProLink II with the 9739 MVD transmitter Figure D 4 Configuration menu continued Configuration and Use Manual 235 ...
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Страница 245: ...Using the Field Communicator with the 9739 MVD transmitter Figure E 2 Overview menu Configuration and Use Manual 239 ...