Honeywell XNX-AMAV-NHCB1 Universal Gas Detection System

The Honeywell XNX-AMAV-NHCB1 universal transmitter provides reliable flammable gas monitoring for heavy chemical and processing facilities. Plant technicians install this versatile platform to connect catalytic bead sensors directly to industrial automation systems.

Product Summary

• Local HART Access: The Honeywell XNX-AMAV-NHCB1 includes a local HART port for fast field calibration and diagnostics.
• Catalytic Bead Performance: This unit features an MPD catalytic bead sensor to detect combustible gases accurately.
• Rugged Aluminum Build: Painted LM25 aluminum enclosure offers high resistance against aggressive industrial atmosphere and weather elements.
• Express Global Logistics: We dispatch orders worldwide through top carriers including FedEx, UPS, and DHL.

Product Code Breakdown

Suffix Code Structure for XNX Universal Transmitter:

XNX (Universal Transmitter Base Series)
└── A (ATEX/IEC Global Flameproof Approval)
    └── M (3 x M25 Threaded Entry Ports)
        └── A (LM25 Painted Aluminum Alloy Material)
            └── V (milli-Volt Sensor Personality Interface Board)
                └── N (No Optional Output Modules Installed)
                    └── H (Integrated Local HART Hardware Port)
                        └── CB1 (Catalytic Bead Sensor, 0-100% LEL Range)

Technical Specifications

• Brand: Honeywell
• Model Number: XNX-AMAV-NHCB1
• Product Line: XNX Universal Transmitters
• Gas Sensor Type: MPD Catalytic Bead (0-100% LEL Range)
• Output Signal: 4-20mA with HART digital protocol
• Local Interface: Local HART communication port included
• Signal Resolution: 0.5% LEL digital display resolution
• Frequency Response: Fast response time with T90 under 15 seconds
• Measurement Sensitivity: High response sensitivity to all combustible hydrocarbons
• System Linearity: Linear output across 0 to 100% LFL/LEL scale
• Operating Temperature: -40°C to +65°C (-40°F to +149°F)
• Operating Humidity: 20 to 90% RH non-condensing
• Ingress Protection: IP66 standard rated water and dust ingress protection
• Interference Immunity: High resistance against electromagnetic radiation and RF noise
• Thread Cable Entries: 3 x M25 conduit entries

Core Selling Points

• Convenient Field Calibration: Technicians plug HART handheld devices directly into the front port without opening hazardous area housings.
• Low Operations Cost: Smart plug-in sensor cartridges simplify field replacements and reduce overall plant maintenance budgets.
• Multi-Sensor Capability: The core transmitter interface supports catalytic, infrared, and electrochemical sensors through simple board changes.
• Clear Visual Display: Backlit LCD screen displays gas readings, alarm status, and simple menu prompts clearly.
• Compact Platform Footprint: Light aluminum enclosure allows flexible installation on crowded pipe racks and small structural beams.

Installation Guidelines

• Sensor Mounting Position: Installers mount the detector unit vertically with the sensor pointing down to avoid dust accumulation.
• Wiring Glands: Field crews thread shielded multi-conductor instrument cables through M25 explosion-proof cable glands.
• Local Earth Grounding: Technicians clamp heavy copper grounding wire firmly to external enclosure earthing points.
• Zero Point Adjustment: Field operators execute zero gas calibration using magnetic wand keys prior to commissioning loops.

Package Contents

• Transmitter Base: Single XNX-AMAV-NHCB1 painted aluminum housing unit
• Sensor Cartridge: Pre-fitted MPD catalytic bead flammable gas sensor cell
• Express Shipping Carrier: Fast global transport via FedEx, UPS, and DHL

Frequently Asked Questions

• What gas range does the catalytic sensor cover? The MPD catalytic bead sensor measures flammable hydrocarbon gases from 0 to 100% LEL.
• Why use the local HART port? Technical crews perform setup and maintenance at the unit without running cables to central controls.
• Can operators convert this unit to read toxic gases? Operators swap internal personality boards and sensor cells to monitor toxic electrochemical gases.
• How many cable entries does this model feature? This aluminum enclosure model includes three standard M25 cable entries for instrument wiring.
• Does the unit survive harsh outdoor weather? The IP66 rated aluminum casing protects internal electronics against rain, snow, and severe dust.

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