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Analog input/output dip switches
Analog outputs can operate in two modes accordingly to NAMUR NE43 and EN
15267-3:2007. SITRANS TDL generates the failure signal at the level of 3.3 mA.
NAMUR NE43 provides guidelines for signaling failure information to the safety-interlock
systems over a 4 to 20 mA loop. It is the recommendation from NAMUR NE43 to use 3.8 mA
to 20.5 mA as an extended measurement information range, and using loop current below
3.6 mA or above 21 mA is in the diagnostic failure information range.
NAMUR NE43 Recommendation
EN 15267-3:2007 specifies performance criteria and test procedures for automated
measuring systems that measure gases and particulate matter in, and flow of, the waste gas
from stationary sources. This European Standard supports the requirements of particular EU
Directives. It provides the detailed procedures covering the QAL1 requirements of EN 14181
and, where required, input data used in QAL3. EN 15267-3:2008 provides the guideline for
signaling-failure information to the safety-interlock systems over a 4 to 20 mA loop.
EN 15267-3:2007 Recommendation
SITRANS TDL
Operating Instructions, 05/2023, A5E51429088_AA
Connecting
6.2 Connecting SITRANS TDL
57
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