Fire & Signalling
E2S introduces SIL 2 version of BEx range and manual
By Renée Francoeur
December 14, 2015 – E2S Warning Signals says it has introduced a SIL (Safety Integrity Level) 2 version of its BEx range of explosion-proof alarm horn sounders and Xenon strobe beacons.
The new IECEx and ATEX certified horns and strobes are designed and tested to ensure a 99.9% reliability rate, E2S says. To meet the requirements of SIL 2, a combination of software and hardware in the new units accurately monitors and interprets the sound output of the horn or the light output from the Xenon strobe to check it is functioning correctly. The fault monitoring reports back to the control panel, utilizing either separate fault contacts or by the introduction to the monitoring circuit of a series resistor.
Using the series resistor facility eliminates the need for any additional cables and can be used in a standard two-wire arrangement, the company explains.
A detailed technical and installation manual is also newly available for downloading from www.e2s.com/SIL2.