Hazardous Area Intrinsically Safe Systems

When it comes to the design and selection of equipment in hazardous areas, intrinsically safe circuits become part of the discussion. The principle behind intrinsically safe circuits is that of energy limitation, in other words sparks may be produced by switching contacts but there is not enough energy to ignite the explosive atmosphere. Having an intrinsically safe device or instrument installed alone will not provide you the protection that it is designed for. An intrinsically safe circuit design includes the selection of the instrument, selection of the intrinsically safe barrier either zener or galvanic plus voltage, current, circuit inductance and power parameter calculations and checks. These entity checks provide the verification of the installation to ensure it is suitable for the hazardous area. A typical intrinsically safe installation has the barrier located in the safe zone area connected via an intrinsically safe blue sheath cable to an instrument located inside the hazardous area.

At Hazardous Area solutions we can assist you with verification of intrinsically safe circuits, installation including calibration, creating or maintaining a dossier for your installation. An intrinsically safe instrument by itself does not make it an intrinsically safe installation.

Please contact Rob at Hazardous Area Solutions to find out more and talk to us about how we can help your business.