Safety Instrumented Systems (Sis) Requirements; Sis Certification; Safety Certified Identification; Installation - Emerson Rosemount 3144P Reference Manual

Reference Manual
00809-0100-4021
6 Safety Instrumented Systems (SIS)
requirements
6.1

SIS certification

The safety-critical output of the Rosemount
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
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
2. Devices used in safety applications with ambient temperature below –40 °F (–40 °C)
3. Check the Namur Software Revision located on the adhesive transmitter tag. "SW
6.3

Installation

Installation is to be performed by qualified personnel. No special installation is required in
addition to the standard installation practices outlined in this document. Always ensure a
proper seal by installing the electronics housing cover(s) so that metal contacts metal.
The loop should be designed so the terminal voltage does not drop below 12 Vdc when
the transmitter output is 24.5 mA.
Environmental limits are available in the Rosemount 3144P Temperature Transmitter
Product
Reference Manual
®
Transmitters must be identified as safety certified before
"QT". This signifies that it is a 4–20mA/HART safety certified device. For example:
MODEL 3144PDxA.........QT....
requires option code QT and BR6
Rev _._._". If the Device label software revision is 1.1.1 or higher, the device is
safety certified.
Page.

Safety Instrumented Systems (SIS) requirements

™
3144P Temperature Transmitter is provided
December 2019
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