Emerson MMI-20019043 Manuel D’Utilisation
Effects of Update Rate = Special
Incompatible features and functions
Special
mode is not compatible with the following features and functions:
•
Enhanced events. Use basic events instead.
•
All calibration procedures.
•
Zero verification.
•
Restoring the factory zero or the prior zero.
If required, you can switch to Normal mode, perform the desired procedures, and then
return to Special mode.
return to Special mode.
Process variable updates
Some process variables are not updated when Special mode is enabled.
Special
mode and process variable updates
Table 5-1:
Always polled and updated
Updated only when the petroleum
measurement application is disa-
bled
measurement application is disa-
bled
Never updated
•
Mass flow
•
Volume flow
•
Gas standard volume flow
•
Density
•
Temperature
•
Drive gain
•
LPO amplitude
•
Status [contains Event 1 and Event
2 (basic events)]
2 (basic events)]
•
Raw tube frequency
•
Mass total
•
Volume total
•
Gas standard volume total
•
Temperature-corrected volume
total
total
•
Temperature-corrected density
•
Temperature-corrected volume
flow
flow
•
Batch-weighted average tempera-
ture
ture
•
Batch-weighted average density
•
RPO amplitude
•
Board temperature
•
Core input voltage
•
Mass inventory
•
Volume inventory
•
Gas standard volume inventory
All other process variables and calibra-
tion data. They retain the values held
at the time you enabled Special mode.
tion data. They retain the values held
at the time you enabled Special mode.
Configure device options and preferences
88
Micro Motion
®
Model 2700 Transmitters with Analog Outputs