173
Reference Manual
00809-0100-4021, Rev JA
Certified Safety Instrumented System
April 2017
Certified Safety Instrumented System
Section 6 Safety Instrumented Systems (SIS)
Requirements
SIS certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 173
Rosemount 3144P safety certified identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 173
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 174
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 174
Operation and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 175
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 177
Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 177
Note
This section applies to 4–20 mA only.
6.1 SIS certification
The safety-critical output of the Rosemount
™
3144P Temperature Transmitter is provided through a
two-wire, 4-20 mA signal representing temperature. The Rosemount 3144P Transmitter can be
equipped with or without a display. The Rosemount 3144P Safety Certified Safety Transmitter is certified
to: Low demand; Type B.
SIL 2 for random integrity at HFT=0
SIL 3 for random integrity at HFT=1
SIL 3 for systematic integrity
6.2 Safety certified identification
All Rosemount 3144P HART
®
Transmitters must be identified as safety certified before installing into SIS
systems.
To identify a safety certified Rosemount 3144P Transmitter, make sure the device satisfies the
requirements below:
1. Verify the transmitter was ordered with output option code “A” and option code “QT”. This signifies
that it is a 4–20mA/HART safety certified device.
a. For example: MODEL 3144PDxA………QT....
2. Devices used in safety applications with ambient temperature below –40 °F (–40 °C) requires option
code QT and BR6
3. Check the Namur Software Revision located on the adhesive transmitter tag.
“SW Rev _._._”.
If the Device label software revision is 1.1.1 or higher, the device is safety certified.
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