MTL5544D - Repeater Power Supply
Two channel, for 4/20mA HART® for 2- or 3-wire transmitters, two outputs
MTL5544D provides a fully-floating dc supply for energising a conventional 2- or 3-wire 4/20mA transmitter located in a hazardous area, and repeats the current in other circuits to drive two safe-area loads. For HART 2-wire transmitters, the unit allows bi-directional transmission of digital communication signals superimposed on the 4/20mA loop current.
Separately powered current sources, such as 4-wire transmitters, can be connected but will not support HART communication.