In industrial process environments, handheld communicators are essential for configuring, calibrating, and diagnosing field instruments. The Emerson Trex Device Communicator is one of the most well-known tools in this category—but its price tag can be prohibitive for many smaller operations or maintenance teams looking for flexibility without sacrificing functionality.
Fortunately, there are cost-effective alternatives that deliver high performance without the high overhead. Whether you're working with HART, Foundation Fieldbus (FF), or Modbus devices, the market now offers modern solutions that are not only budget-friendly but often more portable, more updateable, and easier to integrate.
Why Look Beyond the Emerson Trex?
While the Trex offers robust performance and rugged durability, it comes with a premium price—often exceeding $7,000 depending on configuration. It’s also a proprietary device, which means repairs, updates, and support are tied closely to the Emerson ecosystem.
For many users—especially those with limited fleets, constrained budgets, or a preference for platform-agnostic solutions—there’s a compelling case to explore alternatives.
Key Requirements for a Trex Alternative
A good replacement should offer:
- DD-based support (Device Descriptions for full device compatibility)
- HART and/or FF protocol support
- Portable and rugged form factor or mobile flexibility
- Easy firmware and DD updates
- Reliable connection options (USB, Bluetooth, or Wi-Fi)
- Data logging and troubleshooting tools
Top Cost-Effective Trex Alternatives
1. ProComSol DevCom Apps + HART Modems
Best For: HART device communication via mobile or PC
Estimated Cost: $700–$1,500
ProComSol’s DevCom line offers full DD-based HART communication using a tablet, smartphone, or Windows PC. Coupled with their Bluetooth or USB HART modems, these solutions allow users to configure and calibrate field devices with ease.
- Works with Android, iOS, and Windows
- Uses the same DD files as the Trex
- Cost-effective and lightweight
- Same functionality without the bulk of a dedicated handheld
IVAC Pick for field teams seeking flexibility without hardware lock-in.
2. Beamex MC6 Communicator
Best For: Multi-function calibration and communication
Estimated Cost: ~$3,500–$4,500
The Beamex MC6 is a rugged, multifunctional communicator that supports HART, FF, Profibus PA, and Modbus, along with full calibration functionality. It’s more expensive than app-based solutions but still more affordable than a fully equipped Trex.
- Portable field communicator and calibrator
- Touchscreen interface
- Supports full loop documentation
3. AMS Trex Lite (Rumored/Expected)
There are rumors in the instrumentation community that Emerson is exploring a lower-cost Trex version, though no public release has been confirmed. For now, operators seeking lower-cost Emerson options should consider AMS Device Manager on PC with a compatible modem.
Considerations When Choosing an Alternative
- Compatibility: Ensure your instruments are supported by DD files from the provider.
- Update Ease: DDs and firmware updates should be easy and affordable.
- Support: Choose vendors with strong documentation and accessible customer service.
- Connectivity: Wireless modems provide safety and convenience in hazardous areas.
The Future: App-Based Communicators Take Over
As tablets and smartphones become more powerful and rugged, the market is shifting toward mobile-based communicator apps. The combination of low hardware cost, easy updates, and real-time support access makes them an attractive option for teams looking to modernize.
Moreover, the shift supports bring-your-own-device (BYOD) strategies, reducing device training, increasing speed of deployment, and enhancing flexibility across field teams.
Final Thoughts
The Emerson Trex remains a powerful, respected communicator—but it’s not the only option. For many operations, particularly small to mid-sized teams or contract service providers, alternatives like ProComSol’s DevCom or Beamex MC6 offer excellent performance at a fraction of the cost.
At IVAC, we believe every plant—regardless of size or budget—should have access to tools that keep their instrumentation running safely and efficiently. We’ll continue tracking innovations and price-performance leaders in this category to help you stay informed and empowered.