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Yokogawa Electric releases ProSafe-RS SIL2

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Hydrocarbon Engineering,

Yokogawa Electric Corp. has announced that it will release the ProSafe-RS® SIL2 wireless gas detection system in September. Established by the International Electrotechnical Commission (IEC), a safety integrity level (SIL) indicates the relative level of risk provided by a safety function. SILs 1 through 4 are defined by IEC 61508. At SIL2, the risk factor for a plant where safety measures are not in place is in a range between 1/100 and 1/1 000. At SIL3, the risk factor is in a range between 1/1000 and 1/10 000.

Yokogawa Electric releases ProSafe-RS SIL2

The ProSafe-RS SIL2 wireless gas detection system will consist of a newly enhanced version of the Yokogawa ProSafe-RS SIL3 safety instrumented system (R4.03.10), Yokogawa field wireless network devices, annunciator panels, and subsidiary of the German company Drägerwerk AG & Co., GasSecure, wireless gas detectors GS01 or the GS01-EA which is equipped with an extension antenna.

For this system, Yokogawa will establish a total solution that will include both consulting and engineering.


The ProSafe-RS SIL2 wireless gas detection system will consist of a new version of the ProSafe-RS safety instrumented system, R4.03.10, that will be enhanced to add support for an IEC 61508 compliant safety communication technology used in distributed automation; annunciator panels; ISA100 Wireless compliant field wireless devices; and GasSecure GS01 or GS01-EA wireless gas detectors, which are the only devices of this type in the industry that achieve SIL2 risk reduction. The ISA100 Wireless network protocol is based on the ISA100.11a wireless communication standard for industrial automation, which was developed by the International Society of Automation (ISA), and the applications necessary for its implementation. This was approved as the IEC 62734 international standard in October 2014.

Total system solution including both consulting and engineering

Through the use of wireless technology, the ProSafe-RS SIL2 wireless gas detection system will allow increased flexibility with the configuration of detection devices, and will be suitable for use as a fire & gas system and emergency shutdown system thanks to its achievement of SIL2 risk reduction. Based on its knowledge of each of this system’s components and its expertise in production control, safety instrumentation, and field wireless engineering and consulting, Yokogawa will be able to offer a total system solution that includes customer support.

Enhanced operating efficiency

On their Yokogawa CENTUM® VP integrated production control system screens, operators will be able to easily monitor the operation of the ProSafe-RS SIL2 wireless gas detection system as well as that of any conventional wired gas detection system. Since the GasSecure GS01 or GS01-EA wireless gas detector uses the same faceplate as a wired gas detector, operators will have no trouble identifying any changes in the detector’s status, thus helping to prevent errors that can result from the misinterpretation of information.

Improved maintenance

With CENTUM VP, operators will have on-screen access to information on the status of all network devices, the charge remaining on the gas detector batteries, and the status of wireless communications, and thus will be able to quickly detect and respond to any abnormality. Thanks to this functionality, more efficient maintenance plans can be drawn up that, for example, will require fewer periodic checks.

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