What is EMERSON TREXLFPKLWS3SRW?

The EMERSON TREXLFPKLWS3SRW is part of the previous-generation AMS Trex Device Communicator platform. It combines the Device Communicator Plus module with HART and FOUNDATION Fieldbus applications, a rechargeable lithium-ion power module, global intrinsic-safety certifications, wireless connectivity and a three-year standard support package.

For field technicians, this configuration brings device communication, loop power, electrical measurements and specialist applications into one rugged handheld. It is designed for commissioning, configuration and troubleshooting of intelligent field instruments and control valves in process plants.

TREXLFPKLWS3SRW ordering code explained

Key capabilities for field maintenance

• HART and FOUNDATION Fieldbus communication: configure and troubleshoot compatible field devices through one handheld platform.

• Power the Loop: the Plus module can power a field device, reducing the need for a separate loop supply during bench work or early commissioning.

• Loop diagnostics and mA measurement: support troubleshooting of 4–20 mA loops, wiring and device-power issues.

• 5.7-inch resistive touchscreen: designed for operation with work gloves and adjustable for different lighting conditions.

• Rugged, intrinsically safe construction: intended for demanding process-industry environments and certified hazardous areas.

• Application support: this full code includes Radar Master and WirelessHART Provisioning, while the Trex platform also supports field communication, diagnostics and document-viewing workflows.

What is normally included?

According to Emerson ordering information, the base Trex platform includes an AC adapter, USB cable, lead set with connectors, hand strap, approvals and certifications guide, and a getting-started flyer. The L Plus module adds another lead set, the F application choice includes a FOUNDATION Fieldbus power plug when paired with the Plus module, and option S specifies a carrying case.

Exact package contents can vary with production revision, region, condition and seller. Buyers should request a packing-list confirmation before placing an order.

TREXLFPKLWS3SRW or the newer TREX2 platform?

The part number TREXLFPKLWS3SRW belongs to the original TREX ordering structure documented by Emerson in 2023. Emerson's newer ordering information uses a TREX2 prefix and introduces an updated hardware platform with embedded Bluetooth connectivity and revised support choices.

If your project requires an exact replacement, installed-base consistency or a previously approved model, state that the original TREXLFPKLWS3SRW is mandatory. If a current-generation alternative is acceptable, ask for a compatibility review before ordering. Applications, support entitlements, wireless approvals and accessories should not be assumed to transfer automatically between generations.

Information to include with your RFQ

• Exact model: TREXLFPKLWS3SRW

• Required quantity and requested condition

• Delivery country and postal code

• Required intrinsic-safety and wireless approvals

• Whether an exact TREX replacement is mandatory or TREX2 may be considered

• Required apps, support term, lead sets, power plug and carrying case

• Need-by date and preferred shipping method

Technical information is based on Emerson AMS Trex ordering documents and should be reconfirmed for the quoted unit. Emerson, AMS, Trex, HART, FOUNDATION Fieldbus and WirelessHART are trademarks of their respective owners. HONGKONG XIEYUAN TECH CO., LIMITED is an independent supplier; availability, license eligibility, support entitlement, condition and lead time are subject to written quotation.