Temperature transmitter iTEMP TMT82 Safety function
Endress+Hauser 15
L
CAUTION
For the version field mount housing with separate terminal compartment:
‣
With a thermocouple measurement pay attention to the settings of the reference
junction measurement. The setting internal measurement mustn't be selected. (See
also the operating instruction BA01028T)
Validity of data for safety measured error:
• Total permitted temperature range of the transmitter in the SIL mode
• Defined range of the supply voltage
• Limited safety measuring range of sensor element
• Accuracy includes all linearization and rounding errors
• Observe the minimum span of each sensor.
• Housing types: DIN rail transmitter and head transmitter
• Values are 2σ values, i.e. 95.4 % of all measured values are within the specifications.
4.5 Useful lifetime of electrical components
The established failure rates of electrical components apply within the useful lifetime as
per IEC 61508-2:2010 section 7.4.9.5 note 3.
In accordance with DIN EN 61508-2:2011 section 7.4.9.5, national footnote N3,
appropriate measures taken by the manufacturer and operator can extend the useful
lifetime.
This device does not contain any electronic components as per the "EMCRH Electrical &
Mechanical Component Reliability Handbook" Third Edition (exida.com) that have a useful
lifetime less than 50 years.
However, the useful lifetime can be significantly shorter if the device is operated at higher
temperatures.
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