XNX-UTSV-NNCB1 Honeywell Universal Transmitter Catalytic Bead HART

XNX-UTSV-NNCB1 | Honeywell Universal Transmitter for Catalytic Bead Sensors

Honeywell XNX-UTSV-NNCB1 is a universal transmitter designed for catalytic bead and milli-Volt sensors. It provides HART® over 4-20 mA output with UL/CSA approval. The housing is painted 316 stainless steel with 4 x 3/4″ NPT entries. This unit supports MPD, Sensepoint, and Model 705 HT/PPM sensors. It offers flexible mounting, robust environmental tolerance, and multiple communication options. Ideal for combustible gas detection in industrial facilities.

Technical Specifications at a Glance

• Brand: Honeywell Analytics
• Model: XNX-UTSV-NNCB1
• Sensor Type: Catalytic Bead (0-100% LEL) – included
• Output: 4-20 mA with HART® protocol
• Enclosure: Painted 316 Stainless Steel, IP66
• Entries: 4 x ¾” NPT (2 right, 2 left, 1 bottom)
• Approvals: UL / CSA for hazardous locations
• Operating Temp: -40 °C to +65 °C (-40 °F to +149 °F)
• Humidity: 0–99 % RH non-condensing
• Pressure: 80–120 kPa
• Weight: 5 kg (Stainless Steel version)

Communication & Interface Options

• Relays: 3 form C SPCO (2 alarm, 1 fault) 250 VAC / 24 VDC, 5A
• Modbus/RTU: RS-485 isolated, 1200–38400 baud (default 19200)
• FOUNDATION Fieldbus: H1, 31.25 kbit/s, AMIS-49200 MAU
• Relay, Modbus, and Fieldbus options are mutually exclusive.
• Remote reset for alarm silencing.
• Custom backlit LCD with magnetic wand operation.

Mounting & Installation Flexibility

• Integral mounting lugs for wall installation.
• Optional pipe mount kit (Ø100–150 mm / 4”–6”).
• Optional ceiling/wall bracket available.
• Dimensions: 159 x 197 x 113.8 mm (6.14 x 7.75 x 4.48 inches).
• Marine-grade aluminum alloy or SS316 construction.

Environmental Tolerance & Storage

• IP66 rated for dust and water ingress.
• Transmitter temperature: -40 °C to +65 °C.
• MPD-CB1 sensor: -40 °C to +65 °C.
• MPD-I sensor: -20 °C to +50 °C.
• Storage: -40 °C to +65 °C, 0–99 % RH.
• Air speed tolerance up to 6 m/sec.

Commissioning & Maintenance Convenience

• Local HART® port for easy configuration and diagnostics.
• Magnetic wand interface – no need to open the enclosure.
• Quick zero/span calibration via HART® communicator.
• Diagnostic alerts for sensor health and end-of-life.
• Routine sensor replacement without special tools.

Compatibility & System Integration

• Works with MPD, Sensepoint, Model 705 HT and PPM sensors.
• Compatible with Modicon Quantum and other DCS/PLC platforms.
• HART® over 4-20 mA ensures seamless integration.
• Supports Modbus RTU over RS-485 for digital networks.
• FOUNDATION Fieldbus option for advanced process control.

Certifications & Compliance

• UL and CSA approved for Class I, Div 2 hazardous areas.
• Manufactured under ISO 9001 quality management.
• CE marked (EMC and ATEX variants available).
• Tested per IEC 61508 for SIL capability.
• Factory calibrated and verified before shipment.

Package Contents & Shipping

• XNX-UTSV-NNCB1 transmitter unit with catalytic bead sensor.
• Mounting hardware and multilingual quick start guide.
• IS barrier and adaptor (pre-installed).
• Shipped via FedEx, UPS, or DHL (worldwide).
• Dispatched within 24-28 hours after order confirmation.

Typical Applications

• Combustible gas detection in oil & gas refineries.
• Chemical plants and petrochemical facilities.
• Wastewater treatment and biogas plants.
• Pharmaceutical and fine chemical manufacturing.
• Mining, metal processing, and confined spaces.

Diagnostic Capabilities

• Continuous self-diagnostic routine with fault relay.
• HART® diagnostic variables: sensor temperature, health status.
• Alert for sensor failure, out-of-range, or end-of-life.
• Event log accessible via HART® or Modbus.

Professional FAQ – Expert Insights & Selection Guide

• Q: Does the XNX-UTSV-NNCB1 support 2-wire loop power?

  Yes, it operates on 4-20 mA loop power with HART®. Ensure the loop supply is between 12-30 VDC.

• Q: Can I use this transmitter with other catalytic bead sensors?

  It is optimized for Honeywell MPD and Sensepoint series. Third-party sensors may require verification of mV output and temperature compensation.

• Q: What is the difference between Modbus and FOUNDATION Fieldbus options?

  Modbus is simple and cost-effective for legacy systems. FOUNDATION Fieldbus offers advanced diagnostics and control, but they are mutually exclusive – choose based on your control network.

• Q: How do I select the correct mounting kit?

  Standard wall mount uses integral lugs. For pipe installation (Ø100-150 mm), order the optional pipe kit. For overhead mounting, choose the ceiling bracket. Consider vibration and access for maintenance.

• Q: What is the expected sensor life and replacement interval?

  Typical catalytic bead sensor life is 3-5 years depending on gas exposure and environment. Regular calibration every 6 months is recommended. The transmitter provides end-of-life alerts via HART®.

Oiltech Controls’s Insight

• This transmitter is a solid choice for combustible gas monitoring in SIL-rated safety loops.
• Its IP66 housing and wide temperature range make it suitable for outdoor installations.
• We recommend the Modbus option for easy integration with existing PLC/DCS networks.
• For fieldbus applications, the FOUNDATION Fieldbus version offers better asset management.

Why Buy From Oiltech Controls?

• Over 15 years of expertise in industrial automation spares.
• Reliable global shipment with tracking.
• All products are tested – industrial surplus or refurbished with full function check.
• 12-month warranty for peace of mind.
• Technical verification performed before dispatch.
• Specialized support for obsolete control systems, including Modicon Quantum.

Contact: info@oiltechcontrols.com  |
+86 158 8020 0923

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