Honeywell XNXXSH1SS Smart Electrochemical H2S Gas Sensor Assembly

Plant engineers choose the Honeywell XNXXSH1SS smart sensor module for high-precision toxic hydrogen sulphide gas detection in severe industrial locations. Honeywell builds this reliable unit to protect workers near oil refineries, chemical plants, and wastewater facilities. The rugged 316 stainless steel body withstands harsh environmental conditions while delivering accurate real-time gas level telemetry.

Core Technical Specifications

• Manufacturer: Honeywell
• Part Number: XNXXSH1SS
• Target Gas Type: Hydrogen Sulphide (H₂S) low concentration range
• Detection Technology: Electrochemical Smart Sensor Assembly
• Selectable Full Scale Range: 10.0 to 50.0 ppm
• Default Factory Measurement Range: 15.0 ppm full scale
• Lower Detectable Limit: 1.0 ppm minimum threshold
• Measurement Resolution: 0.1 ppm incremental steps
• Measurement Accuracy: Better than ±0.3 ppm variance
• Response Time Speed (T50): Less than 20 seconds
• Response Time Speed (T90): Less than 30 seconds
• Operating Temperature Range: -40°C to 55°C (-40°F to 131°F)
• Selectable Calibration Gas Range: 30% to 70% of selected full scale value
• Default Calibration Target Point: 10 ppm test concentration
• Housing Material Construction: 316 Heavy-Duty Stainless Steel (SS)
• Environmental Immunity: High resistance against humidity changes and ambient temperature swings
• Cross Interference Capability: Built-in selective filter layer minimizes false alarms from non-target gases
• Linear Output Performance: Exceptional linear signal drift control across the full operational temperature span
• Hardware Compatibility: Fits XNX Universal Transmitter and Series 3000 MkII/MkIII fixed platforms
• Shipping Weight: 4.0 kg overall mass

Key Product Engineering Advantages

• Technicians complete fast field replacements without turning off main transmitter electrical power lines.
• Pre-loaded factory calibration data streamlines field setup and reduces manual configuration labor time.
• Extreme negative temperature resistance ensures stable performance during severe outdoor winter climate conditions.
• Superior signal linearity maintains measurement consistency across all target toxic concentration levels.
• Heavy stainless steel housing provides mechanical protection against physical impact and corrosive chemical atmospheres.

Part Number Suffix Structure

• XNX Series Universal Platform Base:
  • S Option Code: Electrochemical Sensor Type Category
    • H1 Designation: Low Range Hydrogen Sulphide (H₂S) Gas Cell
      • SS Suffix: 316 Stainless Steel Corrosion Resistant Body Housing

Field Installation and Mounting Guide

• Verify that the transmitter housing threads remain clean before inserting the new sensor module.
• Align the internal connecting pins carefully to ensure proper contact during the hand installation process.
• Thread the sensor assembly firmly into the junction box port to secure proper explosion-proof sealing.
• Apply system power and allow the electrochemical cell adequate warmup time before performing gas testing.
• Conduct a zero calibration baseline check after temperature stabilization completes inside the transmitter enclosure.

Package Contents and Global Shipping

• One Honeywell XNXXSH1SS smart electrochemical hydrogen sulphide gas sensor cartridge assembly
• Heavy-duty protective shock-proof transport box with moisture barrier lining packaging material
• Express global door-to-door delivery options available through FedEx, UPS, and DHL

Frequently Asked Questions

• How does the sensor handle sudden temperature drops down to -40°C in outdoor installations?
  • Internal thermal compensation circuitry automatically adjusts sensor response to maintain accurate toxic gas readings.
• Can hydrocarbon vapors in processing plants trigger false toxic alarms on this device?
  • Selective electrochemical technology prevents unwanted cross-sensitivity interference from general hydrocarbon chemical vapors.
• What is the recommended recalibration interval for maintaining optimum accuracy in field service?
  • Maintenance teams typically schedule calibration checks every six months according to standard safety plant guidelines.
• Does this smart cartridge require manual pin configuration during field hot-swapping procedures?
  • The pre-configured internal memory automatically uploads sensor operating parameters directly to the connected host transmitter.
• What steps prevent moisture ingress into the sensor cell during high humidity operations?
  • Integrated hydrophobic membrane barriers shield internal electronic components from high moisture exposure while letting gas enter.

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