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WG25 Repeater Power Supply, Loop-powered | Ex | HART Signal Transmission

Product number: WG25
Description Technical details Downloads Use cases Blog posts

Description

WG25 Repeater Power Supply, Loop-powered | Ex | HART Signal Transmission

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

We look forward to hearing from you!
Contact Us

Technical details

Communication (Output, Digital): HART
Function: Signal transmission and supply of 2-wire sensors
Input: 4 ... 20 mA
Explosion protection: Ex
Output: 4 ... 20 mA
Isolation AC/DC: up to 1,000 V
Test Voltage: 4 kV AC
Power Supply: Loop powered
Ambient operating temperature: –10 ... 50 °C
Dimensions (W x L x H): 22.5 x 73.5 x 118.2 mm
Special features: ATEX: II (1) G [EEx ia] IIC, Transmission of HART signals
Product Category: Isolated Signal Conditioner

Downloads

Manuals

[4502] User Manual (DE, EN)
WG 25
Loop-Powered Supply
Version 04

Data Sheets

[4397] Data Sheet
WG25
Product Description | Specifications | Product Range

Certificates

[13687] EU Declaration of Conformity (DE, EN, FR)
WG 25 A7, Opt. ... & IsoTrans 37 A7, Opt. ...
No. EU210416A | 2021-04-16

Our service

Used in Process or Applications

Interface Technology
High voltage transducers and signal conditioners for the acquisition and conversion of current, voltage, temperature, speed, strain and resistance signals.

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