Emerson Rosemount 5408 Reference Manual page 157

Reference Manual
00809-0100-4408
5. Perform a one-point level measurement verification of the transmitter in the
6. Remove the bypass and otherwise restore normal operation.
8.8.2 Use AMS Device Manager and Field Communicator
Procedure
1. Prior to the test, ensure there are no alarms or warnings present in the transmitter.
2. Bypass the process safety function and take appropriate action to avoid a false trip.
3. Simulate 4.00 mA output and verify loop current.
4. Simulate 20.00 mA output and verify loop current.
Rosemount 5408 and 5408:SIS Level Transmitters
d) Measure loop current (e.g. reading the safety logic solver or using the TEST
terminal, see Use the TEST
e) Verify the current deviation is within the safety deviation of 2% (±0.32 mA).
Note
The inaccuracy of safety logic solver or current meter needs to be
considered.
f) Select Stop to end loop test.
measuring range. Compare with independent measurement (e.g. the BPCS level
sensor).
a) Under Overview, select All Variables.
b) Verify the current level or distance reading with an independent
measurement is within the safety deviation of 2%.
Note
The inaccuracy of the independent measurement needs to be considered.
a) Select Service Tools → Alerts.
a) Select Service Tools → Simulate.
b) Under Analog Out, select Loop test.
c) Select 4mA and then select Next (Enter on Field Communicator).
d) Measure loop current (e.g. reading the safety logic solver or using the TEST
terminal, see Use the TEST
e) Verify the current deviation is within the safety deviation of 2% (±0.32 mA).
Note
The inaccuracy of safety logic solver or current meter needs to be
considered.
f) To end loop test, select Cancel (ABORT on Field Communicator).
a) Select Service Tools → Simulate.
b) Under Analog Out, select Loop test.
Safety Instrumented Systems (SIS) requirements
terminal).
terminal).
February 2020
157