Emerson Rosemount 5408 Reference Manual page 153

6.
Use AMS Device Manager and Field Communicator
1.
2.
3.
4.
Rosemount 5408 and 5408:SIS Level Transmitters
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.
Remove the bypass and otherwise restore normal operation.
Prior to the test, ensure there are no alarms or warnings present in the transmitter.
a. Select Service Tools > Alerts.
Bypass the process safety function and take appropriate action to avoid a false trip.
Simulate 4.00 mA output and verify loop current.
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 Section
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).
Simulate 20.00 mA output and verify loop current.
a. Select Service Tools > Simulate.
b. Under Analog Out, select Loop test.
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 Section
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).
7.4.4).
7.4.4).
Safety Instrumented Systems (4-20 mA only)
143