Emerson Micro Motion 1600 - 6.4 Configure events; 6.4.1 Configure a basic event

Field communicator Device Settings → Inputs/Outputs → Discrete Output x → Flow Switch
Flow Rate Switch is used to indicate that the flow rate has moved past a user-specified setpoint, in either
direction. The flow rate switch is implemented with a user-configurable hysteresis.
Typically, a Discrete Output is assigned as the flow rate switch indicator. The Discrete Output can be wired to
an external device such as a light or a horn.
Prerequisites
A channel must be configured as a Discrete Output, and the Discrete Output must be available for this use.
Procedure
1. Set Discrete Output Source to Flow Switch, if you have not already done so.
2. Set Flow Switch Variable to the flow variable that you want to use to control the flow rate switch.
3. Set Flow Switch Setpoint to the value at which the flow switch will be triggered (after Hysteresis is
applied).
Depending on the polarity of the Discrete Output:
• If the flow rate is below this value, the Discrete Output is ON.
• 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
6.4 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.
6.4.1 Configure a basic event
Display
Not available
ProLink III Device Tools → Configuration → Events → Basic Events
Field communicator Not available
Configuration and Use Manual Configure advanced options for process measurement
MS-00809-0200-1600 May2024
Configuration and Use Manual 73