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Series MTL7706/7787 Zener Barrier

Brand: Dwyer Instruments, LLC
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The Series MTL7706 / 7787 Zener Barrier is an intrinsically safe 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.
Features
  • Approved for use in hazardous areas
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The Series MTL7706 / 7787 Zener Barrier is an intrinsically safe 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.
Features
  • Approved for use in hazardous areas
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Specifications

Brand

Accuracy

  • ± 2 Microampere

Approvals & Certifications

  • CE
  • CSA
  • Ex
  • FM
  • UL

Humidity

  • 5 to 95 % Relative Humidity

Indication

  • Green: Power Indication

Loop Resistance

  • 0 to 500 ohms

Mounting

  • Aluminum DIN Rail 1 M

Operating Temperature

  • -20° to 60° C (-4° to 140° F)

Output

  • 4-20 mA

Power Requirement

  • 20-35 Vdc

Storage Temperature

  • -40° to 80° C (-40° to 176° F)

Supply Voltage

  • 11.0 V at 20 mA with 500 ohms Load
  • 16.2 V at 20 mA with 250 ohms Load
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Typical Applications

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