Key Parameters and Features
Core Features & Advantages
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Power the Loop Without External Equipment: The Plus (L) module includes a built-in HART/FOUNDATION Fieldbus power supply with an internal 167 Ω resistor, enabling technicians to power a field device directly from the communicator — even before power and I/O infrastructure are in place. This eliminates the need for external power supplies or loop resistors during bench configuration and field commissioning .
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NIST-Traceable Measurement for Calibration: The Plus module is calibrated to NIST-traceable standards, with mA measurement accuracy suitable for official calibration activities — not just reference readings. This allows technicians to perform 4-20 mA loop checks and device calibrations with a single handheld tool .
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Dual Protocol Support (HART + FOUNDATION Fieldbus): The F application code enables both HART and FOUNDATION Fieldbus communication. A Fieldbus Power Plug is included with the Plus module for powering FF segments .
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Radar Master Application: The R option includes the Radar Master app, which brings enhanced echo curve functionality to the field communicator for Rosemount radar level transmitters. Technicians can create tank geometric profiles, tune echo curves, and access trended tank level and alert history directly at the tank .
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Intrinsically Safe for Hazardous Areas: The KL certification includes ATEX, CSA, and IECEx intrinsic safety approvals (including FISCO), allowing use in Zone 1, Zone 2, Class I Division 1, and Division 2 hazardous locations .
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Automatic Data Synchronization: Field changes made on the communicator automatically synchronize with AMS Device Manager via Wi-Fi or USB, maintaining data integrity in the plant's asset management database without manual transcription .
Typical Applications
The TREXLFPKLWS3SR is widely used for field device management across process industries:
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Oil & Gas: HART and FOUNDATION Fieldbus transmitter commissioning and diagnostics in hazardous areas
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Chemical & Petrochemical: Device configuration and troubleshooting in Zone 1/Division 1 environments
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Power Generation: Instrument calibration and maintenance in turbine and boiler control loops
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Pharmaceutical: NIST-traceable calibration of critical process instruments in regulated environments
Frequently Asked Questions (FAQ)
Q1: What does the model number TREXLFPKLWS3SR indicate?
A: TREX = base platform; L = Device Communicator Plus module (loop power, ammeter); F = HART + FOUNDATION Fieldbus applications; P = Li-Ion power module; KL = ATEX/CSA/IECEx IS certifications; W = Wireless; S3 = 3-year Standard Support; S = Carrying Case; R = Radar Master App .
Q2: Can this model power a device without external power?
A: Yes. The Plus (L) module includes Power the Loop functionality, allowing the communicator to power HART or FOUNDATION Fieldbus devices directly. This is useful for bench configuration and field commissioning before I/O infrastructure is available .
Q3: Does the TREXLFPKLWS3SR support FOUNDATION Fieldbus?
A: Yes. The F application code enables both HART and FOUNDATION Fieldbus communication. A Fieldbus Power Plug is included with the Plus module for FF segment powering .
Q4: Is this device intrinsically safe?
A: Yes. The KL certification includes ATEX, CSA, and IECEx intrinsic safety approvals, suitable for Zone 1, Zone 2, Class I Division 1, and Division 2 hazardous areas .
Q5: What is included with the communicator?
A: AC adapter, USB cable, lead sets with connectors, hand strap, quick start guide, carrying case, and Foundation Fieldbus Power Plug (FF units). The ValveLink Mobile application is available at no charge once the Trex unit is activated .
Q6: What is the difference between the first-generation TREX and the TREX2?
A: The first-generation TREX (including TREXLFPKLWS3SR) uses an 800 MHz ARM Cortex A8 processor and Windows Embedded Compact 2013. The TREX2 features a quad-core processor, 64 GB flash memory, and an Android 14 platform with embedded Bluetooth .
Recommended Models & Related Products
Choosing the Right Model
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For HART + FOUNDATION Fieldbus with Radar Master: The TREXLFPKLWS3SR is the correct choice with the Plus (L) module for loop power, NIST-traceable measurement, and radar level transmitter configuration .
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For HART + Fieldbus without Radar Master: The TREXLFPKLWS3S offers the same core FF capability without the additional Radar Master application .
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For HART-only applications: Select a model with H instead of F, such as TREXLHPKLWS3S .
