Universal Fixed Gas Transmitter Compatible with Catalytic, Infrared, and Electrochemical Sensors, 4-20 mA Output with HART

The XNX is a universal fixed gas transmitter from Honeywell Analytics designed to operate with the brand’s widest range of sensing technologies: catalytic, infrared (point and open path), and electrochemical sensors. This version comes factory-configured to work with Searchpoint Optima Plus and Searchline Excel detectors (gas sensor not included). It integrates into monitoring systems via standard HART over 4-20 mA communication, with options for MODBUS and Foundation Fieldbus H1, allowing for use with third-party PLCs and controllers. Its robust design for hazardous areas makes it suitable for refineries, chemical plants, oil and gas terminals, and wastewater treatment plants.

Key Features

• Universal platform compatible with catalytic, IR (point and open path), and electrochemical sensors
• Standard HART over 4-20 mA interface, with MODBUS or Foundation Fieldbus H1 options
• Up to 3 configurable relays (2 alarm and 1 fault)
• Factory-configured to operate with Searchpoint Optima Plus and Searchline Excel
• Five 3/4-inch NPT threaded entries, painted aluminum housing
• IP66, NEMA 4X protection, for indoor and outdoor installation
• Certified for hazardous locations Class I Div. 1 and 2, Groups B, C, D; SIL2

Technical Specifications