Redundant Sensors vs System Complexity
Specify redundancy architecture from SIL calculations first, then reduce lifecycle complexity through standardised hardware and integrated smart diagnostics.
CyberTRIZ analysis · Seveso contradiction FS006 · one of 8,235 worked contradictions published by CyberTRIZ.AI
Regulations
Business Context
Redundant sensors improve the reliability of Safety Instrumented
Functions by reducing the probability of dangerous undetected failures.
However, additional sensors increase installation cost, calibration
requirements, diagnostics, and lifecycle management complexity.
The Contradiction
Greater sensor redundancy improves functional safety.
Greater redundancy increases system complexity.
Why It Exists
Every additional instrument requires installation, configuration,
testing, maintenance, and periodic verification throughout its
operational life.
Direction
Apply redundancy according to SIL requirements and equipment criticality
while simplifying architecture through standardized instrumentation and
intelligent diagnostics.