Honeywell XNX-UTSE-NHNNN Universal Gas Transmitter

The Honeywell XNX-UTSE-NHNNN gas detection transmitter offers continuous protection for harsh offshore and onshore processing plants. Plant technicians install this versatile unit from the Honeywell XNX Universal Transmitters line for toxic gas and oxygen monitoring. Industrial facilities specify the Honeywell XNX-UTSE-NHNNN transmitter because it combines heavy-duty stainless steel housing with simple local HART maintenance access.

Product Summary

• This universal unit interfaces directly with Honeywell electrochemical sensor cartridges for toxic gas and oxygen monitoring.
• Heavy-duty 316 stainless steel housing protects internal electronics against extreme marine atmospheric exposure and heavy mechanical impacts.
• Field operators adjust parameters and run diagnostic checks through the integrated intrinsically safe local HART interface port.

Key Features and Benefits

• The rugged 5 kg cast housing delivers extreme structural strength for offshore oil rigs and chemical facilities.
• Integrated intrinsically safe barriers allow safe sensor hot-swapping in dangerous hazardous locations without removing system power.
• The dual-purpose enclosure supports multiple mounting choices including surface wall lugs, ceiling brackets, or pipe clamps.
• Standard 4-20mA signal outputs integrate smoothly into existing industrial plant control monitors and distributed control networks.
• High environmental sealing prevents moisture ingress during high-pressure washdown cycles in dirty processing areas.

Model Breakdown Tree

• XNX Transmitter Enclosure Build:
  • UTSE Base Platform:
    • U: UL and CSA Safety Approvals
    • T: 3 x 3/4 inch NPT Threaded Cable Entries
    • S: Painted 316 Grade Stainless Steel Material
    • E: Electrochemical Interface with IS Barrier for Toxic and Oxygen Sensors
  • NHNNN Module Options:
    • N: Base Card Option Not Installed
    • H: Local IS HART Access Port Included
    • NNN: Sensor Cartridge Body Not Included

Detailed Technical Specifications

• Brand: Honeywell
• Model: XNX-UTSE-NHNNN
• Operating Pressure Range: 90 to 110 kPa atmospheric pressure compatibility
• Measurement Accuracy & Range: High precision toxic gas resolution within ±1% full scale across configured ranges
• Frequency Response: Fast electronic response updating current loop signals in under 15 seconds
• Sensitivity & Linearity: High signal stability with direct linear scaling across total sensor lifespan
• Operating Temperature: -40°C to +65°C continuous rating with storage tolerance from -40°C to +75°C
• Environmental Protection: Weatherproof IP66 design operating safely in 0 to 99% non-condensing relative humidity
• Interference Immunity: Internal metallic housing shields delicate amplifier circuits from surrounding high-voltage electrical noise

Installation and Mounting Steps

• Mount the base housing securely to a wall or a 4-to-6-inch pipe using suitable structural hardware clamps.
• Thread approved explosion-proof conduit fittings into the three available 3/4-inch NPT cable entry ports carefully.
• Connect the incoming DC power supply wires and 4-20mA loop signal leads directly into terminal strip blocks.
• Plug the target Honeywell electrochemical sensor cartridge into the lower sensor adapter port until fully seated.

Packaging and Shipping Details

• One original transmitter assembly housing packed inside heavy-duty industrial foam protective cartons.
• Pre-installed local HART terminal cap securing the intrinsically safe front panel programming interface.
• Worldwide priority shipping options available through FedEx, UPS, and DHL logistics services.
• Honeywell supports every original unit with a standard 12-month manufacturer warranty protecting against material defects.

Frequently Asked Questions

• What mounting pipe diameters does the optional mounting kit support? The optional pipe kit fits standard structural pipes from 100mm to 150mm in outer diameter.
• Does this stainless steel model include extra output relay contacts? No, this base unit uses standard 4-20mA current loop output with digital HART communication.
• What total weight does this stainless steel transmitter add to support structures? The complete transmitter housing weighs 5 kilograms due to its thick 316 stainless steel body.
• Can technicians calibrate this unit in explosive atmospheres safely? Yes, technicians connect handheld calibrators to the local IS HART port without breaking hazardous area seals.
• What operating pressure conditions does this transmitter housing require? The system operates reliably within standard atmospheric barometric pressure ranges from 90 to 110 kPa.

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