Application Area; Purpose - ABB TTH300 User Manual

TTH300, TTF300 TEMPERATURE TRANSMITTER | SM/TTX300/SIL-EN REV. E

1 Application area

The TTH300 and TTF300-*H Series temperature transmitter are 2-wire 4 to 20 mA devices for the temperature monitoring of solids,
fluids and gases of all types in containers and piping.
Combined with a single or dual channel temperature sensor assembly, the temperature transmitters become a temperature sensor
assembly.
The temperature sensors that can be connected to the temperature transmitters TT*300-*H for safety applications are:
• 2-, 3- and 4-wire RTD
• Thermocouple
The order variant 'SIL2 - Declaration of Conformity' meets the special SIL safety engineering requirements for the integration in
Safety Instrumented Systems in compliance to IEC 61508 Edition 2 part 1 to part 7.
The area of safety application is limited to:
• Up to SIL 2 as single transmitter installation
• Up to SIL 3 as redundant transmitter installation
• Mode of safety operation: Low Demand Mode
• Hardware Fault Tolerance: HFT 0 (as single transmitter installation 1oo1)
• Architectural Constraints: SIL 2 (based on Type B, HFT 0 and SFF
• Systematic Capability: SC 3 according IEC 61508
The safety data, constraints, assumptions, installation / maintenance instructions and operating limits defined in the related
documents needs to be considered.
In case of questions and detected safety critical device failures please contact the ABB Customer service center
(Keywords: Product Type Designator, SIL).
Customer service center
Tel: +49 180 5 222 580
Email: automation.service@de.abb.com

2 Purpose

According IEC 61508-2 Annex D 'Safety manual for compliant items' the purpose of this safety manual is to document the information
which is required to enable the integration of this item into a safety-related system in compliance with the requirements of the
IEC 61508 standard.
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