Honeywell XNX-UTAI-RNNNN Universal Gas Detection Transmitter

The Honeywell XNX-UTAI-RNNNN universal transmitter provides highly reliable gas monitoring for heavy industrial facilities and safety control networks. Engineers select this robust platform to interface advanced infrared detectors directly with modern plant control systems.

Product Summary

• Integrated Safety Relays: The Honeywell XNX-UTAI-RNNNN includes three programmable relays to trigger local alarm horns and shutdown circuits directly.
• UL Explosion-Proof Rating: Field teams safely deploy this North American certified unit in hazardous locations across processing plants.
• Rugged Aluminum Housing: Painted LM25 aluminum enclosure offers high protection against weather exposure and severe industrial ambient elements.
• Express Global Logistics: We dispatch orders worldwide through top express carriers including FedEx, UPS, and DHL.

Product Code Breakdown

Suffix Code Structure for XNX Universal Transmitter:

XNX (Universal Transmitter Base Series)
└── U (UL / CSA Hazardous Location Approvals)
    └── T (5 x 3/4 Inch NPT Conduit Port Entries)
        └── A (LM25 Painted Aluminum Alloy Housing Material)
            └── I (Infrared Personality Board Interface Module)
                └── R (Integrated 3-Relay Option Board Included)
                    └── N (No Local HART Hardware Interface Installed)
                        └── NNN (No Integrated Sensor Cartridge Included)

Technical Specifications

• Brand: Honeywell
• Model Number: XNX-UTAI-RNNNN
• Product Line: XNX Universal Transmitters
• Supply Voltage Range: 18 to 32 VDC (24 VDC Nominal Operation)
• Relay Configuration: 3 Relays (2 Alarm, 1 Fault, SPDT rated 5A at 250 VAC / 24 VDC)
• Signal Output: 4-20 mA with HART current loop (0 to 22 mA total range)
• Signal Accuracy: ±1% full scale precision output
• Frequency Response: Dynamic response time under 2 seconds for continuous loop updates
• Measurement Sensitivity: High input sensitivity matching open-path and point IR sensors
• System Linearity: Linear current output across the full measuring scale range
• Signal Resolution: 0.05 mA high-resolution signal step adjustment
• Operating Temperature: -40°C to +65°C (-40°F to +149°F)
• Storage Temperature: -40°C to +75°C (-40°F to +167°F)
• Humidity Range: 0 to 99% RH non-condensing environment
• Ingress Protection: IP66 and NEMA 4X rated weatherproof seal
• Interference Immunity: Shielded circuitry resists heavy electromagnetic noise and high RF interference
• Conduit Entries: 5 x 3/4 inch NPT threaded entry ports
• Unit Weight: Lightweight 5 lbs (2.3 kg) enclosure design
• Power Consumption: 13.2 W max (Searchline Excel), 9.7 W max (Optima Plus)

Core Selling Points

• Direct Alarm Switching: Built-in high-capacity relays activate field sirens and beacon lights without extra relay output cards.
• Flexible NPT Threading: Five 3/4 inch NPT entry ports accommodate standard conduit fittings across North American industrial installations.
• Broad Infrared Compatibility: The unit seamlessly interfaces Searchline Excel, Searchpoint Optima Plus, or generic 4-20mA device inputs.
• High Visual Recognition: Bright blue painted aluminum housing allows quick unit identification on crowded industrial piping structures.
• Low Thermal Drift: Advanced internal thermal compensation maintains stable reading accuracy across extreme environmental temperature swings.

Installation Guidelines

• Mounting Procedures: Field crews mount the 5-lb aluminum body to vertical structural beams using built-in mounting lugs.
• Conduit Sealing: Technicians seal 3/4 inch NPT conduit connections using approved electrical sealant to ensure NEMA 4X protection.
• Relay Wiring Setup: Electrical installers wire alarm switching loops to SPDT dry contacts before powering the primary supply line.
• HART Signal Verification: Technicians connect handheld communicators across loop terminals to verify zero offset calibrations before handover.

Package Contents

• Main Transmitter Body: Single XNX-UTAI-RNNNN blue painted aluminum housing unit with relay board
• Hardware Accessories: Standard internal grounding hardware screws and terminal wiring blocks
• Express Freight Carriers: Fast international shipping via FedEx, UPS, and DHL

Frequently Asked Questions

• What electrical load do internal relays support? The SPDT relay contacts handle maximum power ratings of 5 amps at 250 VAC or 24 VDC.
• Does this specific model include a sensor cartridge? This model code specifies no sensor cartridge, serving as an interface transmitter for external detectors.
• What thread standard do cable entries use? The enclosure features five 3/4 inch NPT threaded entries for North American conduit systems.
• Which safety approvals apply to this configuration? This model carries official UL and CSA approvals for hazardous location deployments.
• Can technicians adjust output current limits? Operators configure signal output behavior through software settings from 0 up to 22 mA.

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