System meets SIL3 requirements and reportedly is less costly than a safety PLC. The stand-alone safety instrumented system (SIS) backs up current process control trip logic and meets the requirements of IEC 61511. It includes an IEC 61508 logic solver that is functionally independent from the process control system, supplements existing logic and meets all appropriate safety standards. Diamond-SIS is offered in single, dual- and triple-channel configurations with online diagnostics, testing and maintenance capabilities.

SIS-Tech, (281) 922-8324