WG 25

Detail For supply of intrinsically safe 2-wire transmitters and SMART transmitters
Facts Low-cost due to omission of the integrated power supply
  No mains power required costs savings doe 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
Detail 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