Alert Setup - Emerson Rosemount 2140 Reference Manual

Configuration parameters
March 2022
B.2

Alert setup

B.2.1 Process alerts
Process alerts allow the level detector to indicate when a pre-set data point is exceeded.
Alerts can be set for the following device variables:
• Output State
• Sensor State
• Sensor Frequency
• Scaled Variable (if supported)
• Electronics Temperature
• Terminal Voltage
An active alert is displayed on the status screen of a host or on the LCD display. When the
value returns within range, an alert is reset.
Alert mode
Select "on" to enable the alert, or "off" to switch the alert off.
High alert value
Defines the upper boundary limit for a device variable value.
Note
The high alert value must be higher than the low alert value. Both alert values must also be
within the fork sensor limits.
Low alert value
Defines the lower boundary limit for a device variable value.
Related information
Sensor limits and validation of range points
B.2.2 Power advisory
The optional Power Advisory diagnostic provides a means to detect issues that may
jeopardize the integrity of the electrical loop. Some examples are: water entering the
wiring compartment and making contact with the terminals, an unstable power supply
nearing end of life, or heavy corrosion on the terminals.
This technology is based on the premise that, after the level detector is installed and
powered up, the electrical loop has a baseline characteristic that reflects the proper
installation. If the terminal voltage of a level detector deviates from the baseline and is
outside a pre-set threshold, the level detector can generate a HART alert or analog alarm.
To make use of this diagnostic, first create a baseline characteristic for the electrical loop
after a level detector has been installed. The electrical loop is automatically characterized
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Reference Manual