Instruction d'utilisation Klaxon Syrex IS-XN

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This instruction sheet describes installations which conform
to BS EN 60079:Part14:2003 Electrical Installation in
Hazardous Areas. When designing systems for installation
outside the UK, the local Code of Practice should be
consulted.

1) The certification marking is as follows:

Syrex IS-XN Beacon

II 1G EEx ia IIC T4 (-40ºC <=Ta<= +60°C)

Ui = 28V Pi = 1.2W

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SPECIAL CONDITIONS FOR SAFE USE (as stated in the EC Type Examination Certificate SIRA 05ATEX2269X) ' O' Ring Seal Conditions for Syrex IS-XN Beacon Input Terminals The equipment has an ingress protection rating of IP65. However, if it has been supplied without cable entry devices, then the user shall ensure that the devices that are fitted will provide an ingress protection that is appropriate to the Flash Rate Header Pins environment in which it is installed i.e. IP20 or better. If

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the galvanic isolator on and off, or by a mechanically 6. ELECTRICAL SYSTEM DESIGN FOR INSTALLATION IN activated switch on the hazardous area side of the isolator. HAZARDOUS AREAS USING ZENER BARRIERS If the beacon is controlled by a switch in the positive supply, or the power supply is being turned on and off, only a single Hazardous Area Safe Area channel Zener barrier is required as shown in Fig 3. This circuit may also be used if the beacon is being controlled by a Klaxon IS-