Wika Intrinsically safe repeater power supply, Model IS Barrier
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Intrinsically Safe Repeater Power Supply - IS Barrier

Brand: WIKA Alexander Wiegand SE & Co. KG
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The model IS barrier intrinsically safe barrier has been designed for applications in combination with intrinsically safe 4 ... 20 mA sensors.

By using different connection terminals, 2-wire as well as 4-wire transmitters can be connected.
Features
  • Input 0/4 ... 20 mA, supplying and non-supplying
  • Suitable for SIL 2 per IEC 61508/IEC 61511
  • Bidirectional HART® signal transmission

Specifications

Brand

Input

  • Active Current Input, intrinsically safe

Input Signal, Current

  • 4 ... 20 mA

Current Limitation

  • 25 mA

Transmitter Power Supply

  • > DC 16 V (For 20 mA)
  • > DC 15.3 V (For 22.5 mA)

Under & Overload Signal Range

  • 0 to 24 mA (Extended transmission Range for diagnostics)

Output

  • Current output (Active and passive)
  • Transfer 1: 1 to Input signal

Load

  • < 1,000 Ω at 20 mA
  • < 825 Ω at 24 mA

Output Ripple

  • < 20 mVef

Behaviour in the Event of An Error in Accordance with NE43

  • 0 mA (Cable break in Input)
  • ≥ 22.5 mA (Cable short Circuit in Input)

Input / Output / Voltage Supply

  • Insulation Voltage: 300 Veff
  • Overvoltage Category II
  • Pollution Degree 2
  • Safe isolation in accordance with EN 61010-1: 50 Hz, 1 min.
  • Test Voltage: 2.5 kV

Input / Output

  • Voltage peak value in accordance with EN 60079-11: 375 V

Input / Voltage Supply

  • Voltage peak value in accordance with EN 60079-11: 375 V

Power Supply

  • Voltage Range: DC 19.2 ... 30 V
  • Nominal Voltage: DC 24 V

Maximum Current Supply

  • < 55 mA (DC 24 V / 20 mA / 250 Ω)
  • < 76 mA (DC 24 V / 20 mA / 1,000 Ω)

Dissipation Loss

  • Output, active: < 1.1 W (DC 24 V / 20 mA / 1,000 Ω), < 0.95 W (DC 24 V / 20 mA / 250 Ω)
  • Output, active: < 1.1 W (DC 24 V / 20 mA / 1,000 Ω) < 0.95 W (DC 24 V / 20 mA / 250 Ω)

Power Consumption (Output Active)

  • Power consumption (Output active)
  • < 1.3 W (20 mA / 250 Ω)

Transmission Error

  • < 0.05 % of end value (Typical)
  • < 0.10 % of end value (Max.)

Temperature Coefficient

  • < 0.004 %/K, Typical
  • < 0.01 %/K (Max.)

Step Response (10 ... 90 %)

  • < 200 μs (With step 4 mA ... 20 mA, load 600 Ω)
  • < 600 μs (With step 0 mA ... 20 mA, load 600 Ω)

Ingress Protection

  • IP20

Overvoltage Category

  • II

Flammability Class in Accordance with UL 94

  • V0

Pollution Degree

  • 2

Permissible Ambient Temperatures

  • Operation: -20° to +60° C
  • Storage: -40° to +80° C

Permissible Humidity

  • 10 ... 95 % (No Condensation)

Mounting Position

  • as Required

  • Chemical, petrochemical industry
  • Oil, natural gas
  • Machine building

Documentation

Data Sheet

Operating Instructions

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