WG25 Repeater Power Supply | Input 4 … 20 mA | Ex | Transmission of HART signals
Description
For supply of intrinsically safe 2-wire transmitters and SMART transmitters.
- Affordable
Good price due to omission of integrated power supply - No mains supply required
Cost savings due to lower wiring effort, no mains influences - Low power losses
No unnecessary heating in the enclosure - Protective separation
according to EN 61140 Protection of maintenance staff and downstream devices against excessively high voltages - HART transmission
Bidirectional point-to-point transmission of digital data according to the HART specification - EMC tested
RFI suppressed and surge proof, reliable operation even with electromagnetic interference - Maximum reliability
No maintenance work, therefore the related costs are not incurred
The Task
The passive WG25 repeater power supply is loop-powered. It is used for galvanic hazardous-area separation of a 2-wire supply line and transmits both 4 ... 20 mA and HART signals in both directions. With a voltage drop of just 4.2 V, the WG 25 uses the supply optimally so that all common 2-wire transmitters can be connected.
The Advantages
Compared with active repeater power supplies, it has considerable price and reliability advantages.
Multi-channel systems, for example, require only one central, safe-area power supply that does not even need protective separation.
The Technology
Using Knick TransShield technology, the WG25 has specifications that were previously not available in passive repeater power supplies:
- Extremely high reliability, MTTF of over 300 years
- Protective separation, transient protection
- 10 kV test voltage (optional)
- High electromagnetic compatibility
- Extremely low residual ripple and common-mode interference
- Outstanding pulse formation
- HART transmission
- Hazardous/safe area separation
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| 产品类别: | 通用隔离器 / 标准信号隔离器 |
|---|---|
| 产品系列: | ProLine |
| 截止频率: | < 1 kHz |
| 是否防爆: | Ex |
| 最小工作电压: | 50 V, 300 V, 1000 V |
| 最小测试电压: | 2,5 kV, 5 kV, 510 V |
| 电源: | 环路供电 |
| 设备类型: | 供电隔离放大器 |
| 通信（输出，数字）: | HART |
| 防爆认证类别: | ATEX |
| 输入: | (±)20 mA, 4 … 20 mA |
| 输出: | 0 … 20 mA, 4 … 20 mA |
| 误差级别: | 0.1 %, < 0.5 % |
| 结构型式: | 17.5 … 67.5 mm 模块化外壳 |
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