10
48-651 SIL Certified Safety Manual for E3 Modulevel
®
Step
Action
1
Bypass the safety function and take appropriate action to avoid a false trip.
2
Use HART communications to retrieve any diagnostics and take appropriate action.
3
Send a HART command to the transmitter to go to the high alarm current output and verify that the
analog current reaches that value. ➀
4
Send a HART command to the transmitter to go to the low alarm current output and verify that the
analog current reaches that value. ➁
5
Inspect the transmitter for any leaks, visible damage or contamination.
6
Perform a two-point calibration ➂ of the transmitter over the full working range.
7
Remove the bypass and otherwise restore normal operation.
Device
λ
DU
PT
(FIT)
Proof Test
Coverage
E3, Single Solenoid, DTT
14 76%
E3, Single Solenoid, ETT
14 77%
7.1.4 Suggested Proof Test
The suggested proof test for the E3 is described in the fol-
lowing table. The end user must use calibrated equipment
to measure the output in steps 3, 4, and 6.
7.1.5 Proof Test Coverage
The Proof Test Coverage for the various product configura-
tions is given in the following table.
➀ This tests for compliance voltage problems such as a low loop power supply voltage or increased wiring resistance. This also
tests for other possible failures.
➁ This tests for possible quiescent current related failures.
➂ If the two-point calibration is performed with electrical instrumentation, this proof test will not detect any failures of the sensor.
Table 8 Proof Test Coverage – E3
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