Key Parameters and Features
Core Features & Advantages
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Intrinsically Safe for Hazardous Areas: The KL designation indicates the communicator carries ATEX, CSA, and IECEx intrinsic safety certifications (including FISCO as applicable) . This allows it to be carried into Zone 1, Zone 2, Class I Division 1, and Division 2 hazardous areas, eliminating the need to declassify the area or obtain hot work permits for routine device maintenance .
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Wireless Data Synchronization with AMS Device Manager: The W designation includes Bluetooth, Wi-Fi, and NFC radios . Field changes made on the communicator automatically synchronize with AMS Device Manager via Wi-Fi or USB. Every change made in the field is recorded and time-stamped, maintaining data integrity in the plant's asset management database without manual transcription .
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Rugged Field-Ready Design: Built for harsh industrial environments, the communicator features an IP54-rated enclosure and has been tested to survive a 1-meter drop onto concrete . Its 5.7-inch resistive touchscreen can be operated while wearing work gloves, and the adjustable backlit display remains readable in both bright sunlight and dark conditions .
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HART Communication with Advanced Diagnostics: The communicator supports over 2,500 HART field instruments from Emerson and third-party manufacturers using EDDL technology . It enables technicians to read process variables, configure device parameters, and perform diagnostics without returning to the control room .
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Important Limitation — Basic Module (No Loop Power): The C designation indicates the basic Device Communicator module, which supports HART read/write communication but lacks loop power capability, current measurement, and advanced loop diagnostics. These features require the Plus (L) module. For basic HART communication, the field loop must already have power and a minimum 250Ω resistance .
Typical Applications
The TREXCHPKLWS1 is widely used for HART device configuration and maintenance in process industries:
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Oil & Gas: HART transmitter commissioning and diagnostics on offshore platforms and refineries in hazardous areas
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Chemical & Petrochemical: Device configuration and troubleshooting in Zone 1 and Zone 2 environments
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Power Generation: Instrument calibration and maintenance in turbine and boiler control loops
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Pharmaceutical: Validation and calibration of critical process instruments in regulated environments
Frequently Asked Questions (FAQ)
Q1: What is the primary function of the TREXCHPKLWS1?
A: It is a handheld HART device communicator used to configure, commission, and troubleshoot HART field instruments. It enables field technicians to read and write device parameters without a laptop or control room connection .
Q2: Is this device intrinsically safe for hazardous areas?
A: Yes. The KL designation indicates the device carries ATEX, CSA (US/Canada), and IECEx intrinsic safety certifications (including FISCO as applicable). It can be used in Zone 1, Zone 2, Class I Division 1, and Division 2 hazardous locations .
Q3: What does the model number TREXCHPKLWS1 indicate?
A: The breakdown is: TREX = base platform; C = Device Communicator (basic) module; H = HART application; P = Li-Ion rechargeable power module; KL = ATEX/CSA/IECEx IS certifications; W = Wireless (Bluetooth, Wi-Fi, NFC); S1 = Standard Support (1 Year) .
Q4: Does this model support Foundation Fieldbus?
A: No. The H in the model number indicates HART only. Foundation Fieldbus support requires a model with F instead of H (e.g., TREX LFPKLWS3) .
Q5: Can the TREXCHPKLWS1 power a HART device or measure loop current?
A: No. The C (basic) module does not include loop power capability or mA measurement. These features are available only with the L (Plus) module. For basic HART communication, the field loop must already have power and a minimum 250Ω resistance .
Q6: What wireless connectivity does the communicator support?
A: The W designation includes Bluetooth, Wi-Fi, and NFC radios. Wireless availability is limited to countries where spectrum approval has been obtained .
Q7: What is the difference between S1 and S3 support?
A: S1 = Standard Support for 1 year. S3 = Standard Support for 3 years. Both include technical support and software updates. After the support period expires, basic HART functionality remains, but official firmware and DD library updates are no longer provided .
Q8: What is included with the communicator?
A: Each TREX includes: AC adapter, USB cable, lead set with connectors, hand strap, quick start guide, and installation DVD. The ValveLink Mobile application is available at no charge once the Trex unit is activated .
Recommended Models & Related Products
The TREXCHPKLWS1 is part of the AMS Trex Device Communicator family. Below are related models and accessories:
Choosing the Right Model
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For hazardous area HART applications with wireless sync: The TREXCHPKLWS1 is the correct choice with IS certifications and Wi-Fi/Bluetooth connectivity .
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For longer support coverage: Select the TREXCHPKLWS3 with 3-year Standard Support instead of 1-year .
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For loop power and mA measurement capability: Choose a model with the L (Plus) module instead of C.
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For HART + Foundation Fieldbus applications: Select a model with F instead of H (e.g., TREX LFPKLWS3) .
