8
ORI-652 Jupiter
®
Model JM4 Magnetostrictive Transmitter – SIL Safety Manual
5.8.2 Troubleshooting
Report all failures to the MAGNETROL technical support
department.
Refer to the Model JM4 Installation and Operating Manual
ORI-650 for troubleshooting device errors.
• The SIL Proof Test provides a reliable indication when mainte-
nance is required.
• Firmware can be upgraded only by factory personnel.
6.0 Recurrent Function Tests
6.1
Proof Testing
6.1.1 Introduction
Following is the procedure utilized to detect Dangerous Unde-
tected (DU) failures. This procedure will detect approximately
83% of the Dangerous Undetected (DU) failures in the Jupiter
Model JM4-511X-XXX.
6.1.2 Interval
To maintain the appropriate Safety Integrity Level of a Safety
Instrumented System, it is imperative that the entire system be
tested at regular time intervals (shown as TI in the appropriate
standards). The suitable SIL for the Model JM4 transmitter is
based on the assumption that the end user will carry out this test
and inspection at least once per year.
NOTE: It is the responsibility of the owner/operator to select the type
of inspection and the time period for these tests
6.1.3 Recording Results
Results of the Proof test should be recorded for future reference.
6.1.4 Suggested Proof Test
The suggested proof test described on pages 9–10 will detect
83% of the possible DU failures that remain after taking into
account automatic diagnostics. The suggested proof test in com-
bination with automatic diagnostics will detect 98% of possible
DU failures in Model JM4-511x-xxxx.
