High safety level controller MODEL 231

Conductivity controller for high level alarm with self-checking and blocking (SIL-3) 2014/68/EU (PED) - B+D

Electronic controller with self-diagnosis for low level alarm and system blocking according to European directive 2014/68/EU (PED) with B+D (SIL-3) certificate.

To be used together with the 800 series probe for high level alarm in steam boilers or other pressure equipment requiring a redundant level alarm system.

  • Safety Integrity Level: SIL 3
  • Electronic digital signal processor.
  • Double circuit for conductivity measurement with compensation electrode.
  • 6 different self-diagnostics with 1 minute periodicity.
  • Output relays: 2 switched relays 230V - 2.5 A - AC1 
  • Positive safety burner lockout circuit.
  • Numerical display with alarm code 
  • Minimum water conductivity: 0.5 µS/cm 
  • Manual test button in standard version
  • Power supply: 24V AC/DC - 115 / 230 VAC
  • Power consumption: 3 VA