Product category:
Temperature sensors
News Release from: Yokogawa Europe - Industrial Automation | Subject: YTA series temperature transmitters
Edited by the Engineeringtalk Editorial
Team on 24 August 2006
Temperature transmitters are fit for
SIL2 duties
YTA series temperature transmitters have been certified compliant with the requirements of the IEC61508 international safety standard for Safety Integrity Level 2.
YTA series temperature transmitters from Yokogawa Electric Corporation have been certified by TUV Nord, a product quality certification organisation based in Germany, as being compliant with the requirements of the IEC61508 international safety standard for Safety Integrity Level (SIL) 2 Yokogawa is releasing the YTA series to the market today, and from this date onward all products in the YTA series will be SIL2 compliant
This article was originally published on Engineeringtalk on 5 Oct 2007 at 8.00am (UK)
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There are two international safety standards issued by the International Electrotechnical Commission (IEC).
One is IEC61508 for the functional safety of electronic devices used in all industries, and the other is IEC61511, which is specifically for devices used in the process industry.
The Safety Integrity Level (SIL) refers to safety levels that have been defined by the IEC.
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SIL2 means that the risk factor for a plant can be reduced from 1/100 to 1/1000, and SIL1 means a reduction from 1/10 to 1/100.
For petroleum, natural gas, petrochemical, and other energy and raw material plants, safety is of critical importance; in particular, they need a high level of safety for their control and monitoring systems.
Plant control and monitoring systems encompass process control systems and safety instrumented systems.
While a process control system controls plant operation under normal situations, a safety instrumented system works independently to detect problems during operation and to execute shutdown and other emergency actions in order to prevent accidents and other problems from occurring.
Today, users demand an objective assessment of the SIL for devices that are used in a plant's safety instrumented system, as it indicates the difference in the safety level that can be achieved by implementing a safety measure at a plant.
Temperature transmitters are important components of a safety instrumented system as they send sensor temperature readings to the plant control and monitoring system.
For these reasons, Yokogawa has requested a third party to conduct an objective assessment of its YTA series products, and they have successfully been certified as being SIL2 compliant.
Products in the YTA series have been certified to reduce the risk factor for a plant to a range from 1/100 to 1/1000.
When combined with a safety instrumented system, they can enhance plant safety.
Major target markets and applications include petroleum, natural gas, petrochemical, and other types of plants that require the transmission of sensor temperature data to controllers.
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