Emerson Rosemount 928 Reference Manual page 41

Reference Manual
00809-0100-4928
3. Follow the steps in the wizard to configure the device display mode.
2.7.6 Configuring process alerts
Process alerts allow you to configure the Rosemount
HART
set points are exceeded and the alert mode is ON. Process alerts are displayed on a
handheld communication device, on the AMS Device Manager status screen, on the
Wireless Gateway web interface, on host systems with which the Wireless Gateway
communicates, and in the error section of the LCD display (if so configured). Disable
process alerts if the Rosemount 928 Wireless Gas Monitor is not connected to a wireless
network.
The gas concentration may be latched. If you select Latch Concentration Alarms, the alarm
output is latched until the alert is manually cleared.
You can reset a latched gas concentration alarm by using Field Communicator or AMS
Wireless Configurator. Refer to
latched local alarms. If you select Not Latched, the gas concentration alarm clears
automatically when the gas concentration level dissipates below the specified High
Concentration Threshold.
You can also clear latched alarms by resetting the alarm by removing and reinstalling the
power module. Refer to
Latched alarms do not remain latched following a device reset or power module failure.
Clearing alert history clears process alert history for other alerts, but does not clear latched
gas concentration alerts. Refer to
history for other process alerts to determine whether they have been active.
• On Demand: The display is on when the Rosemount
is connected to a handheld communication device or when it receives a signal
from its Wireless Gateway.
• Periodic: The display is on only during updates at the configured update rate.
• High Availability: The display is always on regardless of the configured update
rate. This is the default display mode option.
®
message when the configured data point is exceeded. Alerts remain active if the
Removing the power module
™
928 Wireless Gas Monitor to send a
Resetting latched alarms
and
Clearing process alarm
Configuration
August 2018
™
928 Wireless Gas Monitor
for information about clearing
Install the power module.
history. You may query alert
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