WG 25 Loop-Powered Supply
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For supply of intrinsically safe 2-wire transmitters and SMART transmitters
Facts
- Low cost due to the omission of the integrated power supply
- No mains power required costs savings due to lower wiring effort
- No mains interference
- Low power loss no unnecessary heating in the enclosure
- Protective separation according to EN 61140: protection of the maintenance staff and subsequent devices against excessively high voltages
- HART® transmission: bi-directional 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 so the associated costs are not incurred
- 5-year warranty
The passive WG 25 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. Compared with active repeater power supplies, it has considerable price and reliability advantages. Multi-channel systems require only one central, safe-area power supply that does not even need protective separation. *HART® is a registered trademark of the HART Communication Foundation
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