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Safety Manual
00809-0200-5100, Rev GB
Proof Test
February 2017
Proof Test
5.1.2 Verification of the relay function
This proof test verifies the Safety Relay function itself, i.e. whether the Safety Relay is able to
open and close.
The test will detect approximately 26% of the DU (dangerous undetected) failures not detected
by the diagnostics in the Rosemount Tank Gauging Safety System.
To test the relay function, follow the procedure described below:
1. in the Change Safety Alarm Mode window, disable SIL mode by changing to Not
Approved:
a. Open the Safety Alarm window.
b. Click the Change Safety Mode button.
c. Enter Device Id and SIL Password.
d. Click the Change to Not Approved button.
2. Check that the relay is de-energized. Verify that Safety status is “Alarm”.
3. In the Safety Alarm window click the Test Safety Relay button. Check that the relay is
energized for 30 seconds.
4. In the Change Safety Alarm Mode window enable SIL mode by changing to Approved.
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