Key Parameters and Features
Core Features & Advantages
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HART Communication for Field Device Management: The communicator enables direct communication with HART field instruments, allowing technicians to read process variables, configure device parameters, and perform diagnostics without returning to the control room. It supports over 2,500 field instruments from Emerson and third-party manufacturers .
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Wireless Connectivity for Data Synchronization: The W designation includes Bluetooth, Wi-Fi, and NFC radios. Field changes made on the communicator can automatically synchronize with AMS Device Manager via Wi-Fi or USB, 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 bulky work gloves, and the adjustable backlit display remains readable in both bright sunlight and dark conditions .
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Important Limitation — Safe Area Use Only: The NA designation indicates no hazardous area certifications. This model is not intrinsically safe and must not be used in explosive atmospheres (Zone 1, Zone 2, or Class I Division 2). It is suitable for general-purpose safe-area locations only .
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Basic Module — No Loop Power or mA Measurement: The C designation indicates the basic Device Communicator module, which supports HART read/write communication but lacks the advanced features of the Plus (L) module, including loop power capability, loop diagnostics, and mA measurement. Field loop troubleshooting requiring power or current measurement would require a different module or external equipment .
⚙️ Typical Applications
The TREXCHPNAWS1 is widely used for HART device configuration and maintenance in safe-area industrial environments:
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Control Room Configuration: Pre-commissioning HART transmitters on the bench before field installation.
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Safe-Area Field Diagnostics: Reading device parameters and performing basic troubleshooting in non-hazardous plant areas.
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Data Synchronization: Automatically updating AMS Device Manager with field changes via Wi-Fi when in range of a network .
Frequently Asked Questions (FAQ)
Q1: What is the primary function of the TREXCHPNAWS1?
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: No. The NA designation indicates no hazardous area certifications. This model is not intrinsically safe and must only be used in general-purpose safe-area locations. For hazardous areas, models with the KL designation (ATEX, CSA, IECEx) are required .
Q3: What does the model number TREXCHPNAWS1 indicate?
A: The breakdown is: TREX = base platform; C = Device Communicator (basic) module; H = HART application; P = Li-Ion rechargeable power module; NA = No hazardous area approval; 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 TREXCHPNAWS1 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 2.1, Wi-Fi 802.11 b/g, and NFC. 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 TREXCHPNAWS1 is part of the AMS Trex Device Communicator family. Below are related models and accessories:
Choosing the Right Model
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For safe-area HART-only applications: The TREXCHPNAWS1 is the correct choice for control room and non-hazardous field use .
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For hazardous area HART applications: Select a model with KL instead of NA (e.g., TREXCHPKLWS1 or TREXCHPKLWS3) for intrinsic safety certifications .
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For HART + Foundation Fieldbus applications: Choose a model with F instead of H (e.g., TREX LFPKLWS3) .
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For loop power and mA measurement capability: Select a model with the L (Plus) module instead of C .
