Safety isolators and splitters

Moore Industries’ SSX and SST Safety Isolators and Splitters provide isolation and signal conversion for HART data and can serve as a splitter to send HART data to independent outputs.

08/01/2013


Moore Industries’ new SSX and SST Safety Isolators and Splitters provide isolation and signal conversion for HART data and can serve as a splitter to send HART data to independent outputs. Courtesy: Moore IndustriesMoore Industries’ SSX and SST Safety Isolators and Splitters are designed to provide isolation and signal conversion for HART data in functionally safe process control settings. The two-wire (loop powered) SSX and four-wire (line/mains powered) SST have been certified by exida for single use in Safety Instrumented Systems up to SIL 2. exida certified the SSX and SST Safety Series, ensuring they meet the functional safety requirements for Safety Integrity Level (SIL) 2 capability per IEC 61508:2010.

The SSX and SST family protects safety systems by isolating an SIS from basic process control or monitoring systems so that disconnections or other failures don’t impact the safety system. It also has 1500Vrms of isolating capability to protect safety I/O cards and systems from surges, spikes and transients in the field. Standard 20V/m RFI and EMI protection stops damages caused by radio frequencies and electromagnetic interference. 

The SSX and SST pass along HART data to asset management systems, programming devices or host systems. This lets site operators get the most out of their HART devices. In addition, the SSX stops ground loop noise and solves “bucking” power supply problems caused when two devices try to source power to the same loop. 

The four-wire SST Splitter takes the input from one process signal and creates two identical, isolated outputs that can go to two different monitoring or control devices. It can also serve as a HART splitter to pass HART data to one or both independent outputs. This allows asset management systems to maintain a digital HART connection to critical valves and instruments. It also allows for handheld HART devices, modems or programming devices to easily configure remote field transmitters from control rooms.

Moore Industries

 

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