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Critical Flow Monitoring – Safety Signal Splitter

Many processes require critical cooling water lines for in-line process operations or for emergency cooling.  If a process doesn’t get the required cooling water or a process temperature cannot be lowered quickly enough, layers of protection have to be put in place.

Critical Flow Monitoring – Safety Signal Splitter
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Due to the dangerous nature of these types of situations, Safety Instrumented Systems (SIS) are often implemented.  Often these flow rates are also monitored by the Basic Process Control System (BPCS) too.  When this is a requirement, look to the Functional Safety Series SST Safety Splitter.  The four-wire SST is an exida approved SIL 2 capable signal splitter, with Class I Div 2/Zone 2 approval, that sends your critical process signal to two remote locations.  The SST also passes valuable HART diagnostic and process variable data through the SST in case asset managers need to view calibration or other essential diagnostic data from the field transmitter.

Key Attributes:

  • exida approved and Class I Div 2/Zone 2, SIL 2 capable for SIS loops
  • Full four way isolation up to 500Vrms between power and all input/outputs
  • Passes critical HART data from field transmitter


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