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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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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Trade-Up Program (TU): The TU suffix indicates this unit is ordered through Emerson’s Trade-Up program, which allows customers to exchange an existing field communicator (from Emerson or another manufacturer) for a discounted AMS Trex unit . The serial number and model of the trade-in unit must be provided at the time of order .
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Premium Support (P3): The P3 designation includes 3 years of Premium Support, covering technical support, software updates, extended warranty against manufacturing defects, and accidental damage coverage .
Typical Applications
The TREXZTULFPKLWP3S 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 TREXZTULFPKLWP3S indicate?
A: The breakdown is: TREX = base platform; Z = likely a regional or program-specific identifier; TU = Trade-Up program; 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; P3 = 3-year Premium Support; S = Carrying Case .
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 TREXZTULFPKLWP3S 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 the Trade-Up (TU) program?
A: The TU suffix indicates this unit is ordered through Emerson’s Trade-Up program. Customers can exchange an existing field communicator (from Emerson or another manufacturer) for a discounted AMS Trex unit. The model number and serial number of the trade-in unit must be provided on the purchase order .
Q6: What is included with the communicator?
A: The base package includes AC adapter, USB cable, lead set with connectors, hand strap, quick start guide, and Resource DVD. The S option adds a carrying case. The P3 option includes 3-year Premium Support with accidental damage coverage .
Recommended Models & Related Products
Choosing the Right Model
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For HART + FOUNDATION Fieldbus with Premium Support and Trade-Up discount: The TREXZTULFPKLWP3S is the correct choice, providing loop power, NIST-traceable measurement, and accidental damage coverage at a reduced price through the Trade-Up program.
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For HART + Fieldbus without Trade-Up: The TREXLFPKLWP3S offers the same core capabilities without requiring a trade-in unit .
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For HART-only applications: Select a model with H instead of F, such as TREXLHPKLWS3 .
