EPRO UES815S-24A

  • Product Name:​ UES815S Intrinsic Safety Barrier / Signal Isolator (24 V DC variant)
  • Product Introduction:​ Single-channel active isolator and energy limiter for 4–20 mA field transmitters in hazardous areas, part of EPRO UES8000 family.
  • Technical Specifications:
    • Input: 4–20 mA DC, 250 Ω input impedance, wire-break detection <3.2 mA
Category:
Description
    • Output: 4–20 mA DC, load 0–500 Ω, response ≤10 ms
    • Supply: 24 V DC ±10 %, consumption ≤2.5 W, reverse/over-voltage protected
    • Isolation: output ≤30 V, ≤30 mA, ≤0.75 W (intrinsic safety)
    • SIL: IEC 61508 SIL 2
    • Explosion protection: ATEX / IECEx Ex ia IIC T6
    • Temperature: -20 to 60 °C, IP20 housing
    • Dimensions: 16 × 115 × 110 mm, 35 mm DIN rail
  • Functional Features:​ Galvanic isolation, short-circuit and overload limited output, EMC filtered, DIN rail dense mounting.
  • Application Scenarios:​ Oil & gas, petrochemical, Zone 0/1 transmitter loops.
  • Working Principle:​ Input current converted to isolated current via transformer/optocoupler; energy to hazardous side clamped by Zener/active limiter.
  • Installation Requirements:​ 35 mm DIN rail, cabinet ground ≤4 Ω, spacing ≥5 mm between modules.
  • Precautions:​ Never bypass barrier; confirm Ex ia IIC T6 matches plant gas group; isolate before removing.
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