XNX-UTAV-NNCB1 Honeywell XNX Universal Gas Detector Transmitter

Product Overview

XNX-UTAV-NNCB1 is a universal gas detector transmitter from Honeywell. It includes an MPD catalytic bead sensor for LEL monitoring. This unit delivers fast response to hydrocarbons and flammables. It is reliable for industrial safety applications.

Key Features & Benefits

• Universal Transmitter – Supports multiple sensor types (catalytic bead, electrochemical, HT, PPM).
• MPD Catalytic Bead Sensor – Range 0–100% LEL, fast response to a wide range of gases.
• Robust Enclosure – Painted aluminium, ¾” NPT entries, suitable for harsh environments.
• HART Protocol – 4-20 mA output with HART for digital communication.
• Approvals – UL and CSA certified for North American safety standards.

Technical Specifications

• Brand: Honeywell Analytics
• Model: XNX-UTAV-NNCB1
• Product Type: XNX Universal Gas Detector Transmitter
• Sensor Type: MPD Catalytic Bead (CB1)
• Measurement Range: 0 to 100% LEL (Lower Explosive Limit)
• Response Time: Fast (T90 < 10 seconds typical)
• Output Signal: 4-20 mA with HART digital communication
• Enclosure Material: Painted Aluminium
• Entry Type: ¾” NPT (4 entries)
• Operating Temperature: -40°C to +70°C
• Humidity Range: 0 to 95% RH (non-condensing)
• Linearity: ±2% of full scale
• Resolution: 1% LEL
• Electromagnetic Compatibility: EN 50270, EN 61000-6-2
• Interference Rejection: Good resistance to common industrial interferents

Installation & Commissioning

• Mounting: Wall or duct mounting with ¾” NPT conduit entries.
• Wiring: Simple loop-powered 2-wire connection for 4-20 mA.
• Configuration: Easy calibration and setup via HART or local controls.
• Maintenance: Quick sensor replacement without full transmitter removal.
• Compatibility: Works with Honeywell 705, 705HT, Sensepoint, and MPD sensors.

Certifications & Compliance

• Approval: UL and CSA (Class I, Div 1, Groups B, C, D)
• Ingress Protection: IP66 / IP67 (weatherproof and dust-tight)
• ATEX / IECEx: Optional variants available (not included in this model)

What’s in the Box

• XNX-UTAV-NNCB1 transmitter unit
• MPD catalytic bead sensor (pre-installed)
• IS barrier and adaptor for electrochemical sensors
• Mounting hardware and instruction manual
• Warranty: 12 months from date of purchase

Shipping & Delivery

• Dispatch: 12–24 hours from order confirmation
• Shipping Methods: FedEx, UPS, DHL (express service)
• Tracking: Provided via email after dispatch

Expert Review

Manager’s Insight: The XNX-UTAV-NNCB1 is a solid choice for plant safety. Its universal design reduces spare part inventory. The catalytic bead sensor gives stable readings even in dirty atmospheres. HART capability simplifies digital integration with existing DCS.

Compatible Devices & Applications

• Industries: Oil & gas, chemical, petrochemical, wastewater treatment
• Applications: Leak detection, area monitoring, ventilation control
• Compatible Sensors: MPD, Sensepoint, Model 705, 705HT, electrochemical cartridges
• Works With: Any 4-20 mA input PLC, DCS, or safety system

Frequently Asked Questions (FAQ)

• Is this sensor suitable for hydrogen detection?

  Yes, it detects hydrogen and many other flammable gases.

• Can I use this transmitter with a remote sensor?

  Yes, it supports remote MPD and Sensepoint sensors via adaptor.

• How often should I calibrate the catalytic bead sensor?

  Every 3–6 months depending on application and exposure.

• What is the difference between CB1 and other MPD sensors?

  CB1 is the standard catalytic bead for 0-100% LEL. Other variants cover PPM or HT ranges.

• Does it include the IS barrier?

  Yes, the personality board includes an intrinsic safety barrier and adaptor.

• Can I replace the sensor without re-wiring?

  Yes, the hot-swap design allows quick sensor changes.

Selection Guide

• For standard LEL monitoring: Choose XNX-UTAV-NNCB1 (catalytic bead).
• For toxic or oxygen detection: Select an electrochemical cartridge variant.
• For high-temperature environments: Use Model 705HT compatible sensors.
• For remote installations: Consider Sensepoint remote sensor options.

Experience Tip: Always perform a zero and span calibration after installation. Use clean air or nitrogen for zero, and a certified gas cylinder for span. This ensures reliable readings and extends sensor life.

Need help choosing? Contact our technical team.

Contact Information
Email: sales@powergearx.com
WhatsApp: +86 18030005825

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