XNX-AMSV-NHCB1 – Universal Gas Transmitter
The Honeywell XNX-AMSV-NHCB1 is a stainless steel universal transmitter with ATEX/IEC approval. It includes the MPD catalytic sensor for 0-100% LEL flammable gas detection. The unit supports HART over 4-20 mA and a local HART interface port. This model features 5 x M25 cable entries and a painted 316SS housing for harsh environments.
Key Technical Features
- Sensor type: MPD catalytic bead – response to flammable gases.
- Measuring range: 0 – 100% LEL (lower explosive limit).
- Output: 4-20 mA with HART 7 protocol.
- Local HART port: enables configuration and diagnostics.
- Enclosure: painted 316 stainless steel, IP66/67.
- Entry: 5 x M25 conduit / cable glands.
- Approvals: ATEX, IECEx, INMETRO (Zone 1/2).
- Operating temp: -20°C to +60°C.
Installation & Integration
- Mount the transmitter vertically with sensor pointing downward.
- Use 5 x M25 entries for flexible wiring and conduit.
- Connect to 24 VDC (nominal) power supply.
- Integrates with PLCs, DCS, and gas monitoring controllers.
- HART EDDL provides device health and parameter access.
Calibration & Maintenance
- Zero and span calibration via local HART or magnetic switch.
- Non-intrusive calibration – no need to open the enclosure.
- Catalytic sensor replacement in safe area only.
- Diagnostic alerts for sensor failure or calibration due.
- Annual calibration recommended per industry standards.
Compatibility & Applications
- Compatible with MPD catalytic and other XNX sensor heads.
- Works with Modicon Quantum and other PLCs.
- Typical uses: oil & gas, chemical plants, refineries.
- Also for solvent storage, paint booths, and wastewater.
- Suitable for SIL 2 capable safety loops.
Oiltech Controls’s Insight
- This transmitter stands out for its rugged SS housing and HART EDDL.
- We see high demand for catalytic LEL sensors in offshore applications.
- The local HART port simplifies field troubleshooting.
- 5x M25 entries allow daisy‑chain or multi‑cable setups.
- Our technical team confirms easy retrofitting for legacy systems.
Professional FAQ – Selection & Experience
- Q: Which sensor types work with XNX-AMSV-NHCB1?
This model comes with MPD catalytic LEL sensor. The XNX platform also supports IR, electrochemical, and thermal conductivity sensors with different personality boards. - Q: Can I use this in SIL applications?
Yes, the XNX with catalytic sensor is suitable for SIL 2 environments when properly configured and maintained per safety manual. - Q: What is the difference between 3xM25 and 5xM25 entries?
5xM25 provides more cable entry options for external devices, alarms, or daisy‑chaining multiple transmitters in one junction box. - Q: How often should I calibrate the catalytic sensor?
Based on field experience, we recommend quarterly calibration for high‑risk areas, or at least bi‑annually for stable environments. - Q: Does this transmitter support remote sensor mounting?
Yes, the MPD sensor can be remotely mounted up to 15 meters with the appropriate cable and junction box.
Why Buy From Oiltech Controls?
- Over 15 years of experience in industrial automation spares.
- Global shipping via FedEx, UPS, DHL – 24‑28 hour dispatch.
- Tested surplus and refurbished options with full 12‑month warranty.
- Every unit undergoes technical verification before shipment.
- Expert support for obsolete control systems like Modicon Quantum.
- Contact: info@oiltechcontrols.com or +86 158 8020 0923 (WhatsApp).
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