Emerson Rosemount 644 with HART Protocol - SIS Certification; Safety Certified Identification

Reference Manual
00809-0200-4728, Rev SA
Safety Instrumented Systems (SIS) Certification
July 2018
81
Safety Instrumented Systems (SIS) Certification
Section 7 Safety Instrumented Systems (SIS)
Certification
SIS certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 81
Safety certified identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 81
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 82
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 82
Alarm and saturation levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 82
Operation and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 83
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 85
Note
This section applies to the 4–20 mA only.
7.1 SIS certification
The safety-critical output of the Rosemount™ 644P Temperature Transmitter is provided through a
2-wire, 4–20 mA signal representing temperature. The Rosemount 644 Transmitter can be equipped
with or without a display. The Rosemount 644P 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
7.2 Safety certified identification
All Rosemount 644 HART
®
Head Mount and Field Mount Transmitters must be identified as safety
certified before installing into a SIS.
To identify a safety certified Rosemount 644 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 4–20 mA/HART safety certified device.
a. For example: MODEL 644HA..........QT.....
2. See a Yellow Tag affixed to the top of the transmitter face or a Yellow Tag affixed to the outside of the
enclosure if pre-assembled.
3. Check the Namur Software Revision located on the adhesive transmitter tag.
“SW _._._”.
If the Device label software revision is 1.1.1 or higher, the device is safety certified.