Emerson TREXCHPNAWS1S is a handheld device communicator from the AMS Trex Series, designed for industrial field device configuration, troubleshooting, and calibration. It supports HART communication protocol and is built to withstand harsh manufacturing environments while providing modern mobile-device-like functionality .
Model Number Breakdown
Code Meaning
TREX Base Trex Platform
C Device Communicator communication module
H HART Application
P Rechargeable Li-Ion Power Module
NA No Product Certification (intrinsically safe to CSA/US/Canada and IECEx standards, including FISCO as applicable)
W Wireless (Bluetooth, Wi-Fi, NFC)
S1 Standard Support (1 Year)
S Carrying Case (Soft)
Key Specifications
Processor, Memory & Operating System
Specification Detail
Microprocessor 800 MHz ARM Cortex A8 / NXP
RAM 512 MB DDR3 SDRAM
Internal Flash 2 GB NAND + 32 GB extended flash
Operating System Windows Embedded Compact 2013
Physical Specifications
Specification Detail
Display 5.7-inch color VGA resistive touchscreen, 640 x 480 pixels
Weight Approximately 2.9 lbs (1330 g)
Keypad X button for glove-friendly operation
Power & Battery
Specification Detail
Battery Type Rechargeable Lithium-ion
Battery Life 8+ hours of typical use
Charging Time 3-4 hours
Environmental Ratings
Specification Detail
Operating Temperature -20°C to 55°C (-4°F to 122°F)
Enclosure Rating IP54
Drop Test Survives 1-meter drop onto concrete
Intrinsic Safety CSA (US/Canada) and IECEx certified (includes FISCO)
Connectivity
Type Specification
USB Micro USB 2.0
Bluetooth Version 2.1, range up to 10 m
Wi-Fi 802.11 b/g, range up to 33 m
NFC Active NFC, range up to 20 cm
Communication Terminals
Terminal Function
HART Terminals Two banana plugs with selectable internal resistance (250 Ohm or 500 Ohm)
mA Terminals External ammeter for 4-20 mA loop current measurement (0-22.5 mA, 0.1 mA resolution)
Key Features
1. Field Communicator App
Pre-installed DD library for over 2,000 HART and FOUNDATION Fieldbus devices. Provides comprehensive configuration and troubleshooting options for device commissioning and validation .
2. Loop Diagnostics & Power
Power the loop directly from the communicator
Perform loop troubleshooting and checkout
Validate loop characteristics and isolate wiring issues
Built-in 250 Ohm resistor eliminates need for external components
3. ValveLink Mobile
Analyze and review valve assembly condition and performance without affecting the process. Supports Fisher® FIELDVUE™ digital valve controllers for valve diagnostics including:
Valve signature testing
Dynamic error band analysis
Step response testing
4. WirelessHART Provisioning
Provision wireless networks faster with reduced error rates. Configure hundreds of devices with a single button press—up to 6x faster than manual methods .
5. Upgrade Studio
PC application for keeping the Trex unit up-to-date with:
New software versions
Application downloads
Automated Device Driver (DD) updates
Firmware updates
6. Additional Apps
Loop Diagnostic App - Power and troubleshoot field loops
Fieldbus Diagnostics App - Troubleshoot and validate FF segments
Radar Master App - Configure Rosemount radar level transmitters
Calculator App - Engineering unit conversions, Ohm's law calculator
Trex Help App - Searchable user guide
PDF Viewer - Access manuals and documentation in the field
What's Included in the Box
TREXCHPNAWS1S Device Communicator unit
Rechargeable Li-Ion Power Module (installed)
AC Adapter (includes US, EU, UK, AU outlet plugs)
USB Cable (USB to Micro USB)
Lead Set with connectors
Hand Strap
Carrying Case (Soft) with access window and storage pockets
Quick Start Guide (multilingual)
Resource DVD
Key Benefits
Benefit Description
Rugged Design Built for harsh industrial environments; IP54 rated and drop-tested
Glove-Friendly Resistive touchscreen usable with bulky work gloves; adjustable backlight for sunlight readability
One-Handed Operation Ergonomic design with hand strap for comfortable all-day field use
Intrinsically Safe Certified for use in hazardous areas (CSA, IECEx)
Automatic Synchronization Sync field changes with AMS Device Manager when connected via USB
Device Power Can power HART devices directly from the communicator—no external power supply needed
Extensive Device Support Works with devices from any manufacturer using EDDL technology