77
Reference Manual
00809-0100-4728, Rev MB
Safety Instrumented Systems (SIS) Certification
July 2016
Safety Instrumented Systems (SIS) Certification
Section 7
Safety Instrumented Systems (SIS)
Certification
Safety Instrumented Systems (SIS) certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 77
Rosemount 644 safety certified identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 77
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 78
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 78
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 78
Alarm and saturation levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 79
Rosemount 644 SIS operation and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 80
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 81
7.1
Safety Instrumented Systems (SIS) certification
The Rosemount
™
644 Temperature Transmitter is a 2-wire, 4-20 mA smart device. For safety
instrumented systems usage it is assumed that the 4-20 mA output is used as the primary safety
variable. The transmitter can be equipped with or without the display. The Rosemount 644 Temperature
Transmitter is classified as a Type B device according to IEC61508, having a hardware fault tolerance of 0.
The Rosemount 644 HART
®
Head Mount Transmitter is certified to IEC 61508 for single transmitter use
in Safety Instrumented Systems up to SIL 2 and redundant transmitter use in Safety Instrumented
Systems up to SIL 3.
7.2
Rosemount 644 safety certified identification
All Rosemount 644 HART Head Mount Transmitters must be identified as safety certified before
installing into SIS systems.
To identify a safety certified Rosemount 644, make sure the device satisfies number 1 below and at least
one of the options in 2, 3, or 4.
1. Verify the transmitter was ordered with Output Option code “A”. This signifies that it is a
4-20mA/HART device.
a. For Example: MODEL 644HA………..
2. See a yellow tag affixed to the top of the transmitter face, a yellow tag affixed to the outside of the
enclosure if preassembled, or the option code QT in the transmitter model string.
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.
NAMUR Software Revision Number
SW
(1)
1.
NAMUR Software Revision: Located on the adhesive device tag.
1.1.x
Содержание Rosemount 644 HART
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Страница 122: ...Product Certifications July 2016 Reference Manual 00809 0100 4728 Rev MB 112 Product Certifications ...
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