ABB can provide a wide range of SIL-rated sensors, valve positionare and actuators. Various solutions are available; from high integrity transmitters with full redundancy (Hardware Fault Tolerance = 1) designed and certified by TUV against IEC 61508 requirements to standard transmitters with enhanced internal diagnostics to minimize the Probability of Failure on Demand. The positioner/actuator is available with a shutdown module allowing for overriding of the control action in case of demand. All of these include third party calculations / evaluation of safety performances / lambda to enable SIL loop calculation / assessment.
We have collected links to the Instrument pages for easier access to the Safety instruments.