Emerson Rosemount 5300 Series - Perform Proof Test for SIS Applications

8.7 Perform proof test for SIS applications
8.7.1 Overview
The following proof tests are recommended. If an error is found in the safety function, the
measuring system must be switched out of service and the process held in a safe state by
means of other measures.
The following proof-tests are suggested:
• (A) Suggested comprehensive proof-test
• (B) Suggested comprehensive, fully remote proof-test
• (C) Suggested partial proof-test
• (D) Suggested comprehensive proof-test using reference reflector (High Level
Supervision)
• (E) Suggested comprehensive, fully remote proof-test using reference reflector (High
Level Supervision)
• (F) Suggested proof-test using reference reflector (High Level Supervision)
• (G) Suggested fully remote proof-test using reference reflector (High Level
Supervision)
Table 8-4 can be used as a guidance for selecting the appropriate proof-test.
Table 8-4: Suggested Proof-tests
Proof-
test #
Type Proof-test coverage
(%) of DU
Remaining dangerous,
undetected failures
Can be performed
remotely
A Comprehensive 94% 6 FIT No
B Comprehensive 85% 14 FIT Yes
C Partial 55% 43 FIT Yes
D Comprehensive 94% 6 FIT No
E Comprehensive 86% 13 FIT Yes
F Comprehensive 82% 17 FIT No
G Comprehensive 74% 25 FIT Yes
Note
For a valid result, always perform the proof test on the product that will be stored in the
tank while the device is in operation.
Note
Before every test, make sure you are connected to the correct transmitter by verifying
QT/QS in the model code on the label and your software version. Also verify that the serial
number on the label matches the one in your configuration tool. Make sure to enable write
protection as soon as you are finished.
Reference Manual Safety Instrumented Systems (4-20 mA only)
00809-0100-4530 April 2019
Reference Manual 251