54800 Series Dual Channel Zener Barriers Provide Intrinsic Safety to Signal Producing Sensors Intrinsic safety with solid-state reliability Since no explosion-proof enclosures are needed for sensor wiring, these units further provide economical installation With encapsulated construction, 54800 Series Barriers are impervious to dust and moisture Optional clip available for rail mounting For most non-voltage-producing devices located in a hazardous area, a single zener barrier that is negative-earth-grounded (see preceding two pages) can be used for intrinsic safety. Instrumentation that produces an output (signal conditioners) usually requires two barriers, one for each " floating " lead. In this case, select one of the 54800 Series dual channel barriers shown here. Any non-voltage-producing sensor or switch is rendered intrinsically safe for hazardous locations when properly connected to the output of these Zener Barriers. See table on Page L-2 for specific approval information. Dimensions 6˝ (152.4 mm) 5-1/2˝ (139.7 mm) Optional Rail Mounting Gems SAFE-PAK Relays can be supplied on special order with a clip for rail mounting. Clip is in addition to standard mounting tabs. 1-5/8˝ (41.3 mm) 6 4 2 7 5 3 1 NO. 6-32 THREAD TYPICAL OPTIONAL RAIL MOUNTING CLIP-P/N 61783 MOUNTING TAB 8 4-3/4˝ (120.6 mm) 7/32˝ (5.5 mm) DIA. 3 MTG. HOLES FULL REF. SWITCH (P/N 54805 ONLY) 2-3/4˝ (69.8 mm) HOUSING EARTH-GROUNDED RAIL RAIL-MOUNTING CLIP OPTIONAL. CATALOG NO. 61783 Protective Cover Assures intrinsic safety integrity of sensor terminals and wiring. OUTPUT TERMINAL COVER Typical Wiring Diagram Positive dual-channel Zener Barrier with floating leads. HAZARDOUS AREA SAFE AREA 7 1 5 6 3 4 8 2 FUSE (+) ELECTRONIC PRODUCTS L-10 SIGNAL CONDITIONER (-) POWER SUPPLY ANNUNC. ZENER BARRIER Visit www.GemsSensors.com for most current information. 54800 Series / p1of2 / 30-JUL-14http://www.GemsSensors.com