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Intrinsically Safe Repeater Power Supply - IS Barrier
Brand: WIKA Instruments Ltd.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
Max. 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 (typ.)
- < 0.10 % of end value (max.)
Temperature Coefficient
- < 0.004 %/K (typ.)
- < 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
- IP 20
Overvoltage Category
- II
Flammability Class in Accordance with UL 94
- V0
Pollution Degree
- 2
Permissible Ambient Temperatures
- Operation: -20 ... +60° C
- Storage: -40 ... +80° C
Permissible Humidity
- 10 ... 95 % (no condensation)
Mounting Position
- as required
