Another product that would repeat the signal to two different sources is one from Stahl that also provides IS protection to the hazardous location. That can be found for the model 9160/19-10-11s at...
The purpose of the powered Isolator would be more than likely due to the distance from the source to the reciever while also providing isolation of the two areas. If you take into account voltage drop for the wire a powered isolator will help but may be required to be repeated based on the...