Emerson TREXLHPKLWS3S is an advanced AMS Trex Device Communicator designed for field device configuration, diagnostics, and commissioning. It serves as the modern replacement for the legacy 475 Field Communicator, offering enhanced capabilities for HART protocol instruments in industrial environments.
This device is intrinsically safe (IS) and built to withstand harsh manufacturing facility conditions, making it suitable for use in hazardous areas where explosive atmospheres may be present.
Model Number Breakdown
The TREXLHPKLWS3S model number encodes specific configuration options :
Code Meaning
TREX Trex Device Communicator base platform
L Device Communicator PLUS module (includes loop power and mA readout)
H HART Application
P Rechargeable Li-Ion power module
KL Intrinsically Safe certifications: ATEX, CSA (US/Canada), IECEx (includes FISCO)
W Wireless capabilities: Bluetooth, WiFi, and NFC radio
S3 Standard Support (3 years, includes software updates and technical support)
S Soft Carrying Case
Key Features
Rugged & Reliable Design
IP54 enclosure rating - Protected against dust and water splashes
Drop tested - Survives 1-meter drops onto concrete
Operating temperature - -20°C to 55°C (-4°F to 122°F)
Weight - Approximately 1330 grams (2.9 lbs)
Loop Power Functionality
The Communicator PLUS module (L) includes built-in loop power capability, allowing technicians to power and configure HART devices directly without needing external power supplies or a 250-ohm resistor. This eliminates the need for separate tools and speeds up commissioning.
Advanced Diagnostics
Quickly resolve field device issues using advanced diagnostic tools
Configure and test valves inline
Loop Diagnostics app for troubleshooting 4-20mA loops
Fieldbus Diagnostics for Foundation Fieldbus segment validation
Modern User Interface
5.7-inch color VGA resistive touchscreen - Works with bulky work gloves
Intuitive, consumer-like experience in an industrial-grade device
Wireless Connectivity
Bluetooth 2.1 (range up to 10m)
WiFi 802.11 b/g (range up to 33m)
Active NFC (range up to 20cm)
USB 2.0 for data transfer
Technical Specifications
Parameter Specification
Microprocessor 800 MHz ARM Cortex A8 / NXP
Operating System Windows Embedded Compact 2013
Internal Flash 2 GB NAND
Extended Flash 32 GB
RAM 512 MB DDR3 SDRAM
Display 5.7" (14.5 cm) color VGA resistive touchscreen (640x480 pixels)
Battery Life 8+ hours of typical use
Battery Type Rechargeable Li-Ion
Charge Time 3-4 hours
Enclosure Rating IP54
Operating Temp -20°C to 55°C (-4°F to 122°F)
Weight ~1330 g (2.9 lbs)
Included Applications
The Trex communicator supports multiple downloadable applications via Upgrade Studio :
Field Communicator - Configure and troubleshoot HART/Foundation Fieldbus devices
Loop Diagnostics - Power loops, troubleshoot, and validate loop characteristics
Fieldbus Diagnostics - Troubleshoot Foundation Fieldbus segments
WirelessHART Provisioning - Configure wireless networks up to 6x faster
Radar Master - Rosemount radar level transmitter configuration
ValveLink Mobile - Analyze valve assembly condition and performance
Calculator - Engineering unit conversions, loop calculator, Ohm's law
PDF Viewer - Access manuals and documents in the field
What's Included
Each TREXLHPKLWS3S unit includes :
Trex Device Communicator unit
Rechargeable Li-Ion power module
HART application pre-installed
Device Communicator PLUS module
AC adapter (with US, EU, UK, AU plugs)
USB cable (USB to micro USB)
Lead set with connectors
Hand strap
Quick Start Guide
Resource DVD
Soft carrying case
3 years standard support (software updates and technical assistance)
Safety Certifications
The KL certification ensures the device is Intrinsically Safe for use in hazardous locations :
ATEX - European certification for explosive atmospheres
CSA - Canadian Standards Association (US/Canada)
IECEx - International certification
FISCO - Fieldbus Intrinsically Safe Concept (where applicable)
Typical Applications
Oil & Gas - Field device configuration in Zone 1 hazardous areas
Petrochemical - Valve testing and loop diagnostics
Power Generation - Instrument commissioning and calibration
Pharmaceutical - Validation and documentation
Manufacturing - Production line device troubleshooting
Summary
The Emerson TREXLHPKLWS3S AMS Trex Communicator is a rugged, intrinsically safe handheld device that replaces older communicators like the 475. Its Communicator PLUS module provides built-in loop power, eliminating the need for separate tools. With wireless connectivity, advanced diagnostic applications, and a modern touchscreen interface designed for gloved hands, it significantly improves field technician productivity and device reliability management.