"The passive WG 25 repeater power supply is loop-powered. It is used for galvanic hazardous area isolation of a 2-wire supply line and transmits both 4 ... 20 mA and HART ® signals in each direction. 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.","Compared with active repeater power supplies, it has considerable price and reliability advantages. For example, only a central, safe-area power supply that does not even need Safe Isolation is required even for multi-channel systems.","Using Knick TransShield ® technol- ogy, the WG 25 has specifications that have not yet been achieved by passive repeater power supplies:"
特性
- Extremely high reliability, MTTF of 300 years
- Safe Isolation, transient protection
- 10 kV test voltage (optional)
- High electromagnetic compatibility
- Extremely low residual ripple and common-mode interference
- Excellent pulse formation
- HART ® transmission
- Hazardous-/safe-area isolation
技术参数
| 规格项 | 参数值 |
|---|---|
| 安装方案 | Din Rail Mounted |
| 安全栅类型 | Galvanic Isolator |
| 工作温度 | 14 to 122 F (-10 to 50 C) |
| 其它 | EMC |
| ATEX 认证 | ATEX 2063 |
| 高度 | 2.89 inch (73.5 mm) |
| 深度 | 4.65 inch (118 mm) |
| 产品类别 | Intrinsic Safety Barriers |
| 重量 | 0.2646 lbs (0.1200 kg) |
| 宽度 | 0.8858 inch (22.5 mm) |
| 应用 | 4-20 mA 2-wire Transmitters |
