These passive, energy-limiting devices, provide intrinsically safe DC outputs for a variety of sensors such as level and flow switches level indicating transducers and transmitter and many others. The maximum energy possible at the switch terminals of Zener Barriers is far below the explosive point of the most volatile surrounding gas conditions. The type of non-voltage producing switch or sensor best suited for the application can be utilized, since the entire switching circuit is rendered intrinsically safe by the Zener Barrier. As the switching circuit is low voltage, there is no shock hazard to operating or maintenance personnel
Types of Barriers:
Intrinsically Safe Zener Barriers
65800 Series Single Channel Zener Barrier
65800 Series units are exceptionally compact resulting in installation flexibility and simplification; especially in multiples on a common mounting plate. They provide great economy as well since no explosion-proof enclosures are needed for sensor...
54800 Series Dual Channel Zener Barrier
54800 Series are best suited for instrumentation that produces an output (signal conditioners) requiring two barriers, one for each "floating" lead. Any non-voltage-producing sensor or switch is rendered intrinsically safe for hazardous locations...