DWYER USA ABS Zener Barrier

zener barrier

series mtl7706/7787 zener barrier

intrinsically safe barriers for hazardous locations

the mtl7706/7787 is an intrinsically safe (is) shunt-diode barrier that can be used to communicate with and provide isolations for certain dwyer® transmitters approved for use in hazardous areas. These barriers limit the amount of energy allowed to pass into the hazardous area, which inhibit ignition in flammable atmospheres.

product applications

• electrically isolates pressure and level transmitters from unregulated circuits for intrinsically safe applications

modeldescription

• mtl7706intrinsically safe zener barrier.
• mtl7787intrinsically safe zener barrier.

specifications

• transmitter voltage:16.2 v @ 20 ma with 250ω load (negative w.r.t. Earth); 11.0 v @ 20 ma with 500ω load (negative w.r.t. Earth).
• safe area output:4 to 20 ma.
• load resistance:0 to 500ω.
• power requirement:20 to 35 vdc w.r.t. Earth.
• accuracy:±2 µa under all conditions.
• led indicator:green: power indication.
• temperature limits:operating: -4 to 140°f (-20 to 60°c); storage: -40 to 176°f (-40 to 80°c).
• humidity:5 to 95% rh.
• terminals:accommodate up to 2.5 mm² stranded or single-core.
• safety description:28 µv, 300ω, 93 ma.
• weight:4.9 oz (140 g).
• agency approvals:see table on catalog page.

features

• approved for use in hazardous areas

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