Processing Magazine

Static Monitoring System Protects in Explosive Atmospheres

February 23, 2010
The FM and ATEX approved systems constantly monitor Type C containers (SuperSacks) and similar containers, ensuring that the containers’ anti-static features are within the correct specifications and achieving a constant positive ground connection. The FIBC system provides verification that the bag’s anti-static construction is functional and that it is correctly grounded. The fail-save interlock design will allow product transfer only when the resistance through the container is less than 1x108 Ohms. The system is offered in two formats: one which monitors resistance between the grounded lifting loops and a clamp attached to ground, and another monitoring resistance between two separate clamps with respect to ground. The FIBC system is approved intrinsically safe by FM (Class I, II, III: Div 1 & 2; Groups A, B, C, D, E, F, G) and ATEX (EX II 1 GD EEx ia IIC TF); it is suitable for use in virtually all environments where flammable, combustible or explosive atmospheres are present. Units are available in 110/120V or 220.240V power supply options with NEMA 4X / IP 65 water and dust-tight enclosures. The system can also be used to monitor similar static dissipative materials such as drum linings, kegs, hoses, etc.