Name: XNX-AMSE-NHNNN Honeywell Universal Transmitter ATEX HART Toxic O2
SKU: XNX-AMSE-NHNNN
Price: 266.00 USD
Availability: InStock

Product details

XNX-AMSE-NHNNN: Universal Transmitter for Toxic & Oxygen Sensors

Honeywell Analytics – XNX Series. A modular, future-ready gas detection platform. Supports the widest sensor range on a common board. Flexible I/O, simple installation, and straightforward maintenance. Works with PLCs or dedicated controllers. HART EDDL gives instant health status at a glance.

Key Features – MECE Breakdown

Description
- Universal transmitter for toxic and O2 sensors
- ATEX/IEC approved (Zone 1/2, 21/22)
- M25 entry, 316 stainless steel housing
- Local HART communication included
- Personality: interface for electrochemical cartridges (IS barrier + adaptor)
Technical Data
- Brand: Honeywell
- Model: XNX-AMSE-NHNNN
- Measurement range: depends on sensor cartridge (not included)
- Frequency response: ≤ 30 seconds (T90, sensor dependent)
- Sensitivity: ±2% of full scale
- Linearity: ±1% of full scale
- Resolution: 1 ppm or 0.1% vol (sensor specific)
- Temperature range: -20 °C to +55 °C
- Environmental tolerance: IP66/67, humidity 0–95% RH
- Interference rejection: built-in EMI/RFI filtering
Installation Guide
- Wall or duct mounting with M25 cable gland
- Use 316 SS enclosure for corrosive areas
- Power: 12–30 VDC, 2-wire loop powered
- Sensor cartridge plugs in – no tools required
Calibration & Maintenance
- One-person, non-intrusive magnetic switch calibration
- Hot-swappable sensor cartridges reduce downtime
- Diagnostic LED and HART provide predictive alerts
Compatibility
- Works with Honeywell controllers and standard PLCs
- HART 7 EDDL for Device Management tools
- Analog 4–20 mA output with HART digital signal
Approvals
- ATEX: II 2 G Ex d IIC T6, II 2 D Ex t IIIC T85 °C
- IECEx: Ex d IIC T6 Gb, Ex t IIIC T85 °C Db
- UL/cUL, CSA, and CE marked
Package Contents
- XNX transmitter unit (M25, 316SS)
- Local HART interface module
- IS barrier & adaptor for electrochem. cartridges
- Mounting bracket and terminal blocks
- Quick start guide (multilingual)
Warranty & Shipping
- 12-month warranty against manufacturing defects
- 24-hour dispatch for orders before 2 PM (GMT+8)
- Shipping: FedEx, UPS, DHL (global express)

Expert Review – Manager’s Insight

“XNX-AMSE-NHNNN is the most versatile transmitter I have installed. The stainless steel housing withstands harsh chemical environments. The local HART interface saves time during loop checks. For plant managers, the predictive diagnostics reduce unplanned shutdowns. A reliable choice for SIL 2 capable systems.” – Senior Application Engineer, Powergear X

What It Fits – Applications

FAQ – Expert Answers & Selection Guide

Question: Which sensor cartridges work with this transmitter?Answer: All Honeywell electrochemical cartridges for toxic gases (CO, H2S, NH3, Cl2, etc.) and oxygen. Model XNX-AMSE-NHNNN includes the IS barrier and adaptor.
Question: Is the sensor included?Answer: No. The “NNN” suffix means no sensor. You need to order the cartridge separately for your target gas.
Question: Can I use this in SIL 2 loops?Answer: Yes. XNX is certified for SIL 2 capable systems when paired with suitable sensors and logic solvers.
Question: How do I change a sensor without recalibration?Answer: Use the “hot swap” feature. The transmitter stores calibration data per cartridge. Replace and it auto-recognizes the new unit.
Question: What is the difference between “M25” and “3/4 NPT” entry?Answer: M25 is metric thread. For North America, choose the 3/4 NPT option (model suffix changes). This unit is M25, preferred in Europe and Asia.
Question: Is HART communication optional?Answer: This model includes Local HART as standard. You get both 4–20 mA and digital HART on the same pair of wires.