Emerson Rosemount 5408 Reference Manual page 159

Reference Manual
00809-0100-4408
4. Simulate 20.00 mA output and verify loop current.
5. Perform a two-point level measurement verification of the transmitter in the
6. Remove the bypass and otherwise restore normal operation.
8.8.3 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.
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.
a) Under Service Tools, select Simulate.
b) Select Loop Test.
c) Select 20 mA and then select Start.
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.
c) Move the surface in the tank at least 10% of the full measuring span (level
0-100%).
d) Repeat steps (a) to (b) for the second point.
a) Select Service Tools → Alerts.
Safety Instrumented Systems (SIS) requirements
terminal).
terminal).
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