Description
The Emerson AMS Trex Device Communicator (Configurations TREXLHPKLWS3S and TREXLHPKLWS1S) represents the certified modern engineering platform engineered to succeed the legacy Emerson HART 475 Handheld Communicator. Built on an industrial-grade ARM Cortex-A8 system architecture running Windows Embedded Compact, the unit delivers high-speed digital fieldbus and 4-20 mA HART signal processing. The integrated Device Communicator Plus module eliminates the necessity for external power supplies and load resistors by providing onboard DC loop power directly to field transmitters. Hardware safety barriers comply with worldwide intrinsically safe standards, permitting direct access to instrumentation operating within continuous hazardous atmospheres without plant hot-work permits.
MODEL STRING TECHNICAL DECODING
TREX: Base AMS Trex Handheld Communicator Platform
L: Device Communicator Plus Module (Integrated Power the Loop, Current Measurement, HART Terminals)
H: HART Application Protocol License (Pre-loaded Device Description and FDI Support)
P: High-Capacity Rechargeable Lithium-Ion Power Module
K / KL: ATEX, IECEx, and cCSAus Intrinsically Safe Approvals (Zone 0 / Class I, Division 1)
W: Wireless Radio Interface (Wi-Fi 802.11 b/g/n and Bluetooth)
S1S: 1-Year Standard Support Protocol with Rugged Carrying Case
S3S: 3-Year Standard Support Protocol with Rugged Carrying Case
COMPREHENSIVE TECHNICAL SPECIFICATIONS
Microprocessor: 800 MHz ARM Cortex-A8 OMAP
System Memory: 512 MB DDR2 SDRAM
Storage Capacity: 32 GB Internal Flash Memory (Device Description Storage)
Operating System: Windows Embedded Compact 2013
Display Type: 5.7 inch (14.5 cm) Resistive Touchscreen, VGA (640 x 480 pixels)
Display Features: Sunlight-Readable Transflective LCD, Industrial Glove Compatible
Protocol Support: HART Revisions 5, 6, and 7; WirelessHART; EDDL and FDI Library
Loop Power Output: 16 V DC at 22.5 mA (Power the Loop Function)
Current Measurement Range: 0.0 mA to 22.5 mA
Current Measurement Resolution: 0.1 mA
Current Measurement Accuracy: ±0.1% of span
Internal HART Resistor: 250 Ω Software-Selectable Resistor
Serial and Data Interface: Micro USB 2.0 High-Speed Port
Wireless Interface: 802.11 b/g/n Wi-Fi, Bluetooth 2.1 + EDR
Power Source: Field-Replaceable Rechargeable Lithium-Ion Pack
Battery Operating Duration: Greater than 8 hours under continuous transmitter powering; up to 11 hours standard diagnostics
Battery Recharge Duration: Less than 5 hours to 100% capacity via industrial AC supply
Ingress Protection: IP54 according to IEC 60529 (Dust and Splashing Water Protected)
Drop Resistance: 1.2 m onto concrete per MIL-STD-810G requirements
Operating Temperature: -20 °C to +55 °C
Storage Temperature: -20 °C to +60 °C (with battery module attached)
Ambient Relative Humidity: 0% to 95% non-condensing
Intrinsically Safe Certifications: ATEX Ex ia IIC T4 Ga, IECEx Ex ia IIC T4 Ga, cCSAus Class I Division 1 Groups A, B, C, D
Weight: 1.33 kg
Dimensions: 197 mm x 142 mm x 61 mm
TECHNICAL COMPATIBILITY AND MIGRATION
The AMS Trex hardware maintains complete Technical Compatibility with existing installations calibrated on legacy Emerson 275, 375, and 475 communicators. Backwards-compatible software architecture reads historical configuration files and supports over 2,000 EDDL and FDI device descriptions across multi-vendor instruments without translation errors. Original Engineering manufacturing standards ensure direct integration into enterprise asset ecosystems, enabling automatic data synchronization between field measurements and Emerson AMS Device Manager software via wireless LAN. Units are subject to optimized Lead Time scheduling to accommodate critical plant maintenance turnarounds and capital project commissioning phases.
CRITICAL INDUSTRIAL APPLICATION SCENARIO
During turnaround operations on an offshore oil and gas fractionation column, an unpowered 2-wire HART differential pressure transmitter in an ATEX Zone 1 rated area exhibits communication dropouts. Routing utility power or transporting external bench power supplies and safety barriers to elevated scaffolding introduces physical hazards and requires complex electrical permits. Using the TREXLHPKLWS3S communicator, the field technician connects lead sets directly to the transmitter terminals. The technician enables the unit onboard 16 V DC loop power alongside the internal 250 Ω loop resistor, immediately energizing the isolated transmitter without secondary power supplies. The technician monitors live 4-20 mA current outputs at ±0.1% span accuracy, recalibrates zero and span points using native HART FDI diagnostics, and wirelessly syncs the updated configuration database to the central AMS control architecture before exiting the hazardous boundary.
Key Attributes
Place of origin: Germany
Customized support: OEM
Power: Electronic
Brand name: Emerson
Warranty: 1 years
Model number: TREXLHPKLWS1S
Type (Benchtop): Hand Held
Measure Voltage: Yes
Simulate Loop Voltage: No
Source/Simulate DC Current: Yes
Measure DC Current:: Yes
Hart Compatible: Yes
Packaging and Delivery
Selling Units: Single item
Single package size: 45X28X30 cm
Single gross weight: 4.000 kg
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