Xnx — Universal Transmitter Quick Start Guide

The sensor output has drifted significantly below zero. Re-zero the unit in clean air.

Connect 24 VDC to terminal M-1 (+), terminal M-2 (-), and the ground wire to the internal earth terminal M-3 .

: Important safety precautions and warranty details. Xnx Universal Transmitter Quick Start Guide

Review the full technical manual for site-specific safety regulations.

: Use the integrated mounting lugs for walls or pipe-mount kits. 3. Electrical Wiring The sensor output has drifted significantly below zero

The Honeywell Xnx™ is a universal transmitter that supports a wide range of gas detection sensors. It is designed to interface with catalytic bead, infrared (IR), and electrochemical sensors. This guide covers the basic installation, wiring, and configuration required to get the unit operational.

Do you require communication protocols?

You perform a quick "bump test" by applying a known concentration of gas. The transmitter displays the reading, confirming the pre-calibrated sensor is communicating correctly with the main board without needing a full span calibration. Key Quick-Start Specifications Power Supply 16 to 32 VDC (sensor dependent) Communication 4-20mA with HART (standard); Modbus or Fieldbus (optional) Display Backlit LCD with text, bar graphs, and status icons Mounting Surface lugs, pipe mount (2–6"), or ceiling bracket Operating Temp -40°C to +65°C (-40°F to +150°F) Important Maintenance Tips