XNXXSG1SS | Honeywell Electrochemical Sensor Assembly
This smart sensor assembly is a direct replacement for hydrogen (H₂) monitoring in Honeywell XNX Universal Transmitters and Series 3000 MkII/MkIII gas detectors. The stainless steel housing ensures durability in harsh industrial environments. It supports hot-swap installation without powering down the transmitter, which minimizes downtime. This sensor delivers reliable, continuous detection of toxic gases and oxygen.
Technical Specifications
| Brand | Honeywell |
| Model | XNXXSG1SS |
| Gas Detected | Hydrogen (H₂) – Low Range |
| Sensor Type | Electrochemical (EC) Smart Sensor |
| Detection Range | 0 to 1,000 ppm |
| Default Calibration Point | 500 ppm |
| Lower Detectable Limit | 30 ppm |
| Response Time (T50) | < 60 seconds |
| Response Time (T90) | < 90 seconds |
| Accuracy | ± 8 ppm |
| Operating Temperature | -20°C to +55°C (-4°F to 131°F) |
| Housing Material | Stainless Steel (SS) |
| Compatibility | Honeywell XNX, Series 3000 MkII/MkIII |
| Shipping Weight | 4 kg |
Key Features & Performance
- Smart pre-configured design – ready for immediate use.
- Hot-swappable – replace without removing transmitter power.
- Wide linearity and stable sensitivity across the full range.
- High resistance to common interferent gases.
- Resolution – 1 ppm for precise low-level detection.
- Environmental tolerance – operates in -20°C to 55°C.
- Diagnostic capability – internal fault detection alerts.
Installation & Compatibility
- Mount directly into the XNX Universal Transmitter or Series 3000 MkII/MkIII.
- No special tools required – the sensor locks into place securely.
- Compatible with existing Honeywell gas detection systems.
- Works with both analog and digital output configurations.
Maintenance & Calibration
- Calibration gas range: 30% to 70% of full scale (default 500 ppm).
- Simple one-person calibration using the transmitter interface.
- Auto-recognition of the sensor ID reduces setup errors.
- Routine maintenance: annual calibration recommended.
Certifications & Compliance
- Designed to meet industrial safety standards for toxic gas monitoring.
- CE marked and compliant with relevant EMC directives.
- Intended for use in non-hazardous, general-purpose areas.
Package Contents
- 1 x Honeywell XNXXSG1SS Electrochemical Sensor Assembly
- Installation guide (quick start)
- Calibration certificate
Typical Applications
- Hydrogen leak detection in battery rooms and power plants.
- Continuous monitoring in chemical processing facilities.
- Industrial refrigeration and automotive test cells.
- Oil & gas refineries and laboratory environments.
Diagnostic & Troubleshooting
- Sensor health status is reported via the transmitter display.
- Fault codes indicate end-of-life or connection issues.
- Quick response time verification ensures system reliability.
Frequently Asked Questions (FAQ)
- Q: Is this sensor compatible with MkI transmitters?
A: No, only MkII and MkIII versions are supported. - Q: Can I calibrate with 100% H₂?
A: Use 30–70% of full scale for best accuracy. - Q: What is the shelf life?
A: 6 months when stored in original packaging at 20°C. - Q: Does it require a specific power supply?
A: Power is supplied by the host transmitter.
Why Buy From Oiltech Controls?
- Over 15 years of experience in industrial automation spare parts.
- Global shipping with FedEx, UPS, or DHL – fast and trackable.
- All items are tested for functionality before shipment.
- We supply both new surplus and professionally refurbished options.
- 12-month warranty included for your peace of mind.
- Specialist support for obsolete control systems like Modicon Quantum.
Contact us – For inquiries: info@oiltechcontrols.com or +86 158 8020 0923 (WhatsApp).
Shipping: We use FedEx, UPS, and DHL for fast global delivery.
Warranty: 12 months against manufacturing defects.
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