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Cost-Efficient and Advanced HART and FF Communicators

Emerson Trex, 475 and 375 Replacement Communicators

ProComSol Products Replace the Emerson Trex, 475, and 375 HART Communicators for a Fraction of the Price


HART and FF Bundles

Direct Replacement

Our HART and FF communicators are often used as Emerson 475 or Emerson 375 replacement communicators, as those units are no longer available.  Our products are lower cost alternatives to the Emerson Trex device.

Kits for Hazardous areas are also available.


HART and FF Ex Kits

Alternatives Exist

Since the Emerson 475 Field Communicator is no longer manufactured, you may be looking for an advanced communication alternative to the Trex, but with affordable pricing. We produce the highest-quality HART and FF communication products on the market. Our full range of HART and FF communicators can conveniently serve as Emerson 475 replacement communicator products.


Similar to the Emerson Trex/475/375, our HART and FF communicators use the Device Descriptor (DD) for the connected HART or FF device. This allows access to all of the HART and FF device parameters including the device Methods for trims and calibrations. The included DD Library is comprehensive and easy to update and maintain. Additionally, with our DevCom Communicator Apps and a HART/FF modem, you are able to convert your tablet, PC, or smartphone into a full-featured HART and FF communicator for only a fraction of the cost of an Emerson Trex.

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