XNX-UTSI-NNNNN – Honeywell XNX Universal Transmitter
XNX-UTSI-NNNNN is a rugged universal gas transmitter from Honeywell. It features a painted marine-grade 316 stainless steel enclosure. This unit is UL/CSA/FM approved for hazardous areas. It supports HART over 4-20 mA output and is configured for Searchline Excel or other infrared sensors. The device offers flexible output wiring modes: current source, sink, or isolated 3/4-wire.
Technical Overview
- Manufacturer: Honeywell Analytics
- Model: XNX-UTSI-NNNNN
- Product Line: XNX Universal Transmitters
- Enclosure: Painted marine-grade 316 SS, NEMA 4X, IP66
- Operating Voltage: 18–32 V DC
- Signal Output: 0–22 mA (HART enabled)
- Output Modes: Source, sink, or isolated 3/4-wire
- Conduit Entries: 5 × 3/4″ NPT
- Temp Range: –40°C to +65°C
- Humidity: 20–90% RH (non-condensing)
- Weight: 5 kg
Installation & Compatibility
- Mounting: Wall or pipe mount with integral lugs.
- Wiring: 3/4″ NPT entries for flexible cabling.
- Compatible with Honeywell infrared sensors (Searchline Excel, Optima).
- Also accepts 4-20 mA input from Sensepoint and other transmitters.
- HART communication for remote configuration and diagnostics.
- Works with most PLC and DCS systems, including Modicon Quantum.
Oiltech Controls’s Insight
- This transmitter excels in offshore and marine environments due to its 316 SS housing.
- The 0–22 mA output with HART gives you both analog and digital data.
- Multiple output wiring modes simplify integration with existing control loops.
- It is ideal for replacing older units in SIL2-rated safety systems.
- We recommend pairing it with Honeywell’s infrared sensors for best performance.
Oiltech Controls Review
- “We have supplied this model to over 50 oil & gas sites.”
- “Its IP66 rating and stainless steel build ensure long service life.”
- “Customers appreciate the hot-swappable sensor capability.”
- “The HART interface simplifies maintenance and troubleshooting.”
- “A reliable choice for continuous gas monitoring in harsh zones.”
Suitable Devices & Systems
- Honeywell Searchline Excel and Optima infrared sensors.
- Sensepoint and other 4-20 mA transmitters.
- DCS: Honeywell Experion, Yokogawa Centum, Emerson DeltaV.
- PLC: Modicon Quantum, Allen-Bradley ControlLogix, Siemens S7.
- Safety systems requiring SIL2-rated gas detection.
Professional FAQ (with Buying Guide)
- What is the advantage of 316 SS over aluminum?
316 SS provides superior corrosion resistance for offshore and chemical plants. It is heavier (5 kg) but lasts longer in salt spray or acidic environments.
- Can I use this with a 2-wire loop?
Yes, configure it in isolated 3/4-wire mode. It also supports source and sink modes for flexibility.
- How do I choose between infrared and electrochemical sensors?
Infrared (like Searchline) is best for hydrocarbon gases. Electrochemical suits toxic gases like CO or H2S. This unit supports both via its 4-20 mA input.
- Is HART mandatory for operation?
No, the 0–22 mA analog output works without HART. However, HART enables remote calibration and diagnostics – recommended for large plants.
- What power supply do I need?
Use 24 V DC nominal (18–32 V range). Ensure the supply can handle the sensor’s inrush current.
Why Buy From Oiltech Controls?
- 15+ years in industrial automation – we know gas detection systems.
- Global shipping via FedEx, UPS, DHL – 24-28 hour dispatch.
- Every unit tested and verified before shipment.
- 12-month warranty on all parts and labor.
- We support obsolete systems and can cross-reference legacy models.
- Surplus/refurbished options available with full warranty.
Contact us: info@oiltechcontrols.com | +86 158 8020 0923
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