Xnx Universal Transmitter Quick Start Guide

The Xnx features an LCD interface with a magnetic wand or button navigation (depending on the specific revision).

Step 1: Power Up

Step 2: Select Sensor Type

Step 3: Set Range

Step 4: Set mA Output

The Xnx Universal Transmitter supports 24 VDC (nominal, 18-30 VDC) and can be configured for 3-wire (power, ground, signal) or 2-wire (loop-powered) operation. This guide covers the common 3-wire 4-20mA setup.

Terminal block map (located on the main board):

Wiring procedure:

Pro tip: Do not run the Xnx wiring in the same conduit as high-voltage AC power (motors, VFDs). Inductive noise will cause erratic readings. Xnx Universal Transmitter Quick Start Guide

Before touching a screwdriver, it is vital to understand what makes the Xnx "universal." Unlike single-gas detectors, the Xnx platform supports multiple sensor types (catalytic, electrochemical, infrared, PID) and communication protocols (4-20mA, Modbus, HART, Fieldbus). This guide focuses on the standard hardware setup, which applies to 90% of use cases.

What’s in the box?

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Here’s a professional and clear review of the Xnx Universal Transmitter Quick Start Guide, written as if for a product or technical documentation site. The Xnx features an LCD interface with a


The Xnx menu is accessed via the glass-touch buttons under the display (Left, Up, Down, Right, Enter). Do not use sharp objects to press them.

To set your Zero and Span:

To configure the 4-20mA output:

To set alarm relays (if using the optional relay card): Step 2: Select Sensor Type