XNX-AMSV-NNCB1 Honeywell Universal Transmitter, ATEX, Catalytic Bead LEL

XNX-AMSV-NNCB1 – Honeywell Universal Transmitter with Catalytic Bead Sensor

This XNX transmitter delivers reliable LEL monitoring for flammable gases. It features a catalytic bead sensor (0-100% LEL) and supports HART over 4-20mA output. Housed in 316 stainless steel with 5 x M25 entries, it suits aggressive industrial environments. ATEX and IECEx approvals ensure global compliance.

Oiltech Controls’s Insight

• This unit is the stainless-steel variant of the XNX series – ideal for offshore and corrosive areas.
• The catalytic bead sensor provides fast response to methane and most hydrocarbons.
• We recommend this model for plants requiring rugged construction and simple integration with PLCs like Modicon Quantum.
• Its mV personality supports MPD, Sensepoint, and Model 705 HT sensors – offering sensor flexibility.
• HART EDDL gives instant health status and diagnostic data, reducing field maintenance time.

Technical Specifications

• Brand: Honeywell
• Model: XNX-AMSV-NNCB1
• Type: Universal Transmitter, Gas Detector
• Sensor Range: 0-100% LEL (Catalytic Bead)
• Output: 4-20mA with HART Protocol
• Enclosure: 316 Stainless Steel (painted)
• Cable Entries: 5 x M25
• Approvals: ATEX, IECEx
• Personality: mV interface for milli-Volt sensors
• Operating Temperature: -40°C to +70°C
• Response Time (T90): ≤ 5 seconds
• Resolution: 1% LEL
• Linearity: ±2% of full scale
• Weight: 6.8 kg

Installation & Commissioning

• Mount securely using M25 cable glands (5 entries).
• Use twisted shielded pair cable for 4-20mA loop.
• Power supply: 10-30 VDC (24 VDC nominal).
• Perform zero and span calibration with certified methane gas.
• Simple push-button interface for configuration and sensor replacement.

Maintenance & Compatibility

• Routine bump test every 3 months or per site policy.
• Catalytic bead sensor life: approx. 3-5 years in clean air.
• Compatible with Honeywell MPD, Sensepoint, and Model 705 HT sensors.
• Works with most DCS and PLC systems via HART.
• Supports HART EDDL for advanced device diagnostics.

Typical Applications & Suitability

• Offshore oil & gas platforms – stainless steel resists salt spray.
• Chemical plants with corrosive atmospheres.
• Refineries, petrochemical storage, and pipelines.
• Biogas and wastewater treatment facilities.
• Suitable for use with Modicon Quantum and other major PLCs.

Diagnostic & Self-Test Capabilities

• Continuous self-check for sensor fault, mA loop, and memory integrity.
• Automatic alerts for sensor end-of-life or calibration overdue.
• HART provides remote access to diagnostic data and asset management.
• On-board LED indicators show operational status at a glance.

What’s Included (Package)

• XNX-AMSV-NNCB1 transmitter unit
• Catalytic bead LEL sensor (pre-installed)
• Mounting bracket and hardware kit
• Quick start guide and certificate of conformity
• Calibration cap and test gas adapter

Certifications & Compliance

• ATEX II 2 G Ex d IIC T6
• IECEx Ex d IIC T6 Gb
• CE marked and EN 60079-0 compliant
• IP66/67 ingress protection

Shipping & Warranty

• 12-month warranty against manufacturing defects.
• Dispatch within 24-28 hours after order confirmation.
• Express shipping via FedEx, UPS, or DHL (tracked and insured).
• Weight: 6.8 kg per unit – packaging dimensions available on request.

Why Buy From Oiltech Controls?

• 15+ years of experience in industrial automation spares.
• Global shipping network – fast and reliable delivery.
• Tested surplus and refurbished options available with full functionality.
• 12-month warranty covers all products.
• Each unit undergoes technical verification and calibration before shipment.
• We support obsolete control systems, including legacy Honeywell and Modicon.

Professional FAQ – Experience-Based Answers

Q1: Can I replace the catalytic sensor with an IR sensor later?

A1: Yes, the XNX platform allows sensor swaps. However, you must change the personality module to match the new sensor type and re-configure the transmitter.

Q2: This model has 5 x M25 entries – do I need to seal unused entries?

A2: Absolutely. Use certified blanking plugs to maintain IP66/67 and explosion-proof integrity. We recommend steel or stainless plugs for corrosive environments.

Q3: Does the catalytic bead sensor suffer from poisoning?

A3: Yes, silicone, lead, and sulphur compounds can degrade performance. If your process has these contaminants, consider the IR version (XNX-AMAV-NNIV1) for greater resilience.

Q4: How do I verify the HART communication with my DCS?

A4: Use a HART communicator or EDDL-enabled asset management software. The transmitter supports HART 7 – we advise checking your DCS HART driver version for full EDDL features.

Q5: What is the typical calibration frequency for this unit?

A5: In clean, stable environments, 6 months is common. For harsh or variable gas exposure, we recommend quarterly bump tests and full calibration every 6 months. Always follow site safety protocols.

Contact & Support

Email: info@oiltechcontrols.com
WhatsApp: +86 158 8020 0923

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