Emerson Micro Motion 4200, Руководство по конфигурации и использованию

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• If the flow rate is above this value, the Discrete Output is OFF.
4. Set Hysteresis to the percentage of variation above and below the setpoint that will operate as a
deadband.
Hysteresis defines a range around the setpoint within which the flow rate switch will not change.
• Default: 5%
• Range: 0.1% to 10%
Example
If Flow Switch Setpoint =
100
g/sec and Hysteresis =
5%
, and the first measured flow rate is above
100 g/sec, the discrete output is OFF. It will remain OFF unless the flow rate drops below 95 g/sec. If
this happens, the discrete output will turn ON, and remain ON until the flow rate rises above 105 g/sec.
At this point it turns OFF and will remain OFF until the flow rate drops below 95 g/sec.
Related information
Configure a Discrete Output
6.3 Configure events
An event occurs when the real-time value of a user-specified process variable moves past a user-defined
setpoint. Events are used to provide notification of process changes or to perform specific transmitter actions
if a process change occurs.
Your transmitter supports the enhanced event model.
Tip
Enhanced events allow:
• Defining events by range (In Range or Out of Range), in addition to High and Low
• Triggering transmitter actions if an event occurs
6.3.1 Configure an enhanced event
Display Menu > Configuration > Alert Setup > Enhanced Events
ProLink III
Device Tools
>
Configuration
>
Events
>
Enhanced Events
Field Communicator Configure > Alert Setup > Enhanced Events
An enhanced event is used to provide notification of process changes and, optionally, to perform specific
transmitter actions if the event occurs. An enhanced event occurs (is ON) if the real-time value of a user-
specified process variable moves above (HI) or below (LO) a user-defined setpoint, or in range (IN) or out of
range (OUT) with respect to two user-defined setpoints. Event status can be queried via digital
communications, and a discrete output can be configured to report event status.
You can define up to five enhanced events. For each enhanced event, you can assign one or more actions that
the transmitter will perform if the enhanced event occurs.
Configuration and Use Manual Configure advanced options for process measurement
MMI-20048166 April 2019
Configuration and Use Manual 71