Emerson Rosemount 8782 - Page 71

There are diagnostics that, when under active conditions, do not drive the analog output
to alarm level. The AO diagnostic alarm menu enables selection of these diagnostics to be
associated with an analog alarm. If any of the selected diagnostics are active, it will cause
the analog output to go to the configured alarm level. For a list of diagnostic alarms that
can be configured to drive an analog alarm, see Table 8-3.
Table 8-3: Analog Alarm Diagnostic Options
Diagnostic
(1)
Description
Empty Pipe Drive to an alarm state when empty pipe is detected.
Reverse Flow Drive to an alarm state when reverse flow is detected.
Grounding / Wiring Fault Drive to an alarm state when grounding or wiring fault is
detected.
High Process Noise Drive to an alarm state when the transmitter detects high levels
of process noise.
Electronics Temperature Out of
Range
Drive to an alarm state when the temperature of the electronics
exceeds allowable limits
Electrode Coating Limit 2 Drive to an alarm state when electrode coating reaches a point
where it impacts the flow measurement
Totalizer Limit 1 Drive to an alarm state when the totalizer value exceeds the
parameters set in the totalizer limit configuration (see page 5-x
for more details on this functionality)
Flow Limit 1 Drive to an alarm state when the flow rate exceeds the
parameters set in the flow limit 1 configuration (see page 5-x for
more details on this functionality)
Flow Limit 2 Drive to an alarm state when the flow rate exceeds the
parameters set in the flow limit 2 configuration (see page 5-x for
more details on this functionality)
Continuous Meter Verification Drive to an alarm state when the continuous meter verification
diagnostic detects a failure of one of the tests
(1) See Troubleshooting for more details on each of the diagnostics
8.2.2
Pulse output
LOI menu path Detailed Setup → Output Config → Pulse
Under this function the pulse output of the transmitter can be configured.
Pulse scaling
LOI menu path
Detailed Setup → Output Config → Pulse → Pulse Scaling
Transmitter may be commanded to supply a specified frequency between 1 pulse/ day at
39.37 ft/sec (12 m/s) to 10,000 Hz at 1 ft/sec (0.3 m/s).
Note
The maximum pulse scaling frequency for transmitters with an intrinsically safe output is
5000 Hz.
Reference Manual Advanced Configuration Functionality
00809-0100-8782 November 2019
Reference Manual 71