Emerson Rosemount 5408 Reference Manual page 158

Safety Instrumented Systems (SIS) requirements
February 2020
5. Perform a one-point level measurement verification of the transmitter in the
6. Remove the bypass and otherwise restore normal operation.
8.8.3 Perfom 2-point level and analog output verification
Prerequisites
WARNING
During the proof-test, the transmitter will not output measurement values corresponding
to the product surface level. Ensure systems and people relying on measurement values
from the transmitter are made aware of the changed conditions. Failure to do so could
result in death, serious injury and/or property damage.
8.8.3 Use Rosemount Radar Master Plus
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.
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c) Select 20mA 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).
measuring range. Compare with independent measurement (e.g. the BPCS level
sensor).
a) Select Service Tools → Variables → Process.
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) Under Service Tools, select Alerts.
a) Under Service Tools, select Simulate.
b) Select Loop Test.
c) Select 4 mA and then select Start.
terminal).
Reference Manual
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Reference Manual