Introduction
1.3 Device variants
Safety Manual
6 Operating Instructions, 06/2012, A5E03433511-05
1.3 Device variants
The following table lists all available SITRANS SL gas analyzer 4 to 20 mA variants, which
meet the specific safety requirements of IEC 61508 / IEC 61511:
Product number (MLFB) Measured component SIL level Assessment type
7MB6221-xAx0x-xxxx Oxygen (O2) SIL 1 IEC 61508 / IEC 61511 FMEDA
incl. proven-in-use
7MB6221-xJx0x-xxxx Carbon monoxide (CO) SIL 1 IEC 61508 Hardware assessment (FMEDA)
The term SITRANS SL is used in the following text for all above-mentioned devices.
1.4 Additional documentation
This document deals with the SITRANS SL in-situ laser gas analyzer exclusively as part of a
safety function. This document is valid only in conjunction with one of the following
documents:
No. Designation Order no.
/1/ SITRANS SL Operating Instructions A5E01132948 (English)
A5E01132949 (German)
A5E01132951 (French)
A5E01132952 (Italian)
A5E01132953 (Spanish)
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