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- Honeywell
- XNXXSO1SS
- Oxygen Sensor Cartridge
- USA
- 85 × 50 × 75 mm
- 0.45 kg
- Xiamen, China
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Product Overview
The Honeywell XNXXSO1SS is an oxygen sensor cartridge for the XNX Universal Transmitter, part of Honeywell’s fixed gas detection equipment range. It measures oxygen concentration in the surrounding atmosphere and supplies the sensing response required by the transmitter to monitor oxygen levels in industrial environments. The cartridge is specified for an oxygen measurement range of 0–25% by volume, making it suitable for applications where both oxygen deficiency and elevated oxygen concentration need to be monitored. <Cite refs={[“turn418095search25″,”turn418095search27″,”turn418095search28”]}/>
In industrial facilities, oxygen monitoring is important in locations where inert gases, combustion processes, chemical reactions, or gas-handling operations can change the composition of the atmosphere. An oxygen concentration below the expected ambient level may indicate displacement by another gas, while an elevated concentration can increase the severity of fire hazards. The XNXXSO1SS gives a compatible XNX transmitter an oxygen-specific sensing capability for these applications.
The cartridge is a replaceable sensing component rather than a complete gas transmitter. It must be installed in a compatible XNX Universal Transmitter configured for oxygen measurement. The transmitter handles the measurement display, signal output, and configured alarm functions, while the cartridge provides the oxygen-sensing response.
Because oxygen sensor cartridges have a finite service life and are affected by storage and operating conditions, replacement planning should consider the installation environment, sensor condition, calibration history, and applicable maintenance schedule. A cartridge should not be selected solely by its physical fit; the exact part number and gas type must match the intended detection channel.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Honeywell |
| Model | XNXXSO1SS |
| Product Family | XNX Universal Transmitter |
| Product Type | Oxygen Sensor Cartridge |
| Gas Detected | Oxygen (O₂) |
| Measurement Range | 0–25% by volume |
| Default Calibration Point | 20.9% by volume |
| Lower Alarm Limit | 5.0% by volume |
| Lower Detection Limit | 3.5% by volume |
| Accuracy | ±0.6% by volume, as specified |
| T50 Response Time | Less than 10 seconds |
| T90 Response Time | Less than 30 seconds |
| Operating Temperature | -30 to +55°C |
| Operating Humidity | 15–90% RH |
| Compatible Equipment | Honeywell XNX Universal Transmitter |
| Dimensions | 85 × 50 × 75 mm |
| Weight | 0.45 kg |
Product Features
- Oxygen-specific detection: Measures oxygen concentration for compatible XNX gas detection installations.
- 0–25% volume range: Covers the specified oxygen measurement range for monitoring atmospheric oxygen levels.
- Replaceable cartridge format: Allows the sensing element to be serviced without replacing the complete transmitter.
- Predefined calibration point: Uses 20.9% by volume as the default calibration point.
- Transmitter integration: Works with the XNX platform for measurement display and configured alarm signaling.
- Industrial gas monitoring: Supports oxygen monitoring in facilities where atmospheric composition must be supervised.
- Service-oriented replacement: Enables maintenance teams to replace an oxygen sensing component according to the required service procedure.
Working Principle
The XNXXSO1SS uses an electrochemical sensing principle to respond to oxygen in the surrounding atmosphere. Oxygen reaching the sensing element participates in an electrochemical reaction that produces a signal related to the oxygen concentration. The XNX Universal Transmitter processes this response and presents the resulting measurement.
A simplified measurement path is:
Ambient Atmosphere → XNXXSO1SS Oxygen Sensor Cartridge → XNX Universal Transmitter → Display / Configured Alarm Outputs
As the oxygen concentration changes, the cartridge’s sensing response changes accordingly. The transmitter converts this response into an oxygen reading and compares it with the configured alarm thresholds. Where the system has been configured for alarm signaling, the transmitter can communicate the relevant status through its available outputs.
The cartridge’s specified measurement range is 0–25% by volume, with a default calibration point of 20.9% by volume, close to the oxygen concentration of normal ambient air. Calibration and functional testing should follow the transmitter’s prescribed procedure and use suitable calibration equipment.
Environmental conditions can affect sensor behavior. Temperature, pressure changes, airflow, and storage conditions should therefore be considered when assessing readings or planning maintenance. If the oxygen reading is unstable or inconsistent with the surrounding conditions, check the cartridge installation, calibration status, transmitter configuration, and environmental influences before concluding that the sensing element has failed.
The cartridge does not independently provide a complete alarm system. Alarm thresholds, signal outputs, fault indications, and any connected protective actions depend on the XNX transmitter configuration and the wider gas detection system.
Role in the Honeywell XNX Gas Detection Architecture
The XNXXSO1SS serves as the oxygen-sensing element within a fixed gas detection channel. It works with the XNX Universal Transmitter, which processes the sensor response and communicates measurements and configured alarm conditions to the wider plant monitoring system.
Ambient Atmosphere → XNXXSO1SS Sensor Cartridge → XNX Universal Transmitter → Control Room / Alarm System
| System Element | Function |
|---|---|
| XNXXSO1SS Oxygen Sensor Cartridge | Measures oxygen concentration in the surrounding atmosphere |
| XNX Universal Transmitter | Processes the sensor signal and displays the oxygen reading |
| Transmitter Display | Presents measured oxygen concentration and status information |
| Configured Alarm Outputs | Communicate alarm conditions to connected systems |
| Plant Control or Monitoring System | Receives available measurement and alarm signals |
| Maintenance Interface | Supports calibration, functional testing, and sensor replacement |
Industrial Applications
| Application | Practical Use |
|---|---|
| Chemical Processing Plants | Monitoring oxygen concentration around chemical production equipment |
| Oil and Gas Facilities | Detecting abnormal oxygen levels in designated monitoring areas |
| Industrial Gas Installations | Monitoring atmospheric oxygen where gases may displace ambient air |
| Tank Farms and Storage Areas | Supporting oxygen monitoring in designated hazardous locations |
| Wastewater Treatment Plants | Monitoring oxygen concentration in enclosed equipment areas |
| Manufacturing Facilities | Integrating oxygen detection into fixed gas monitoring systems |
| Utility and Plant Rooms | Monitoring atmospheric conditions in areas requiring oxygen supervision |
| Process Control Rooms | Providing oxygen measurement data to compatible monitoring systems |
| Industrial Maintenance Areas | Replacing worn or depleted oxygen sensor cartridges |
| Fixed Gas Detection Installations | Adding oxygen measurement capability to compatible XNX transmitters |
Installation and Maintenance
- Verify the complete part number: Confirm XNXXSO1SS and ensure that an oxygen cartridge is required for the installed detection channel.
- Check transmitter compatibility: Verify that the receiving equipment is a compatible XNX Universal Transmitter configured for oxygen measurement.
- Review the maintenance procedure: Follow the approved equipment instructions before opening the transmitter or removing the existing cartridge.
- Inspect the replacement cartridge: Check the cartridge housing and sensing interface for visible damage before installation.
- Observe environmental conditions: Confirm that temperature, pressure, humidity, and airflow are within the applicable operating limits.
- Install the cartridge correctly: Follow the specified fitting procedure and ensure that the cartridge is securely seated in its designated position.
- Allow for sensor warm-up: Observe the required warm-up period before evaluating the measurement. The specified minimum warm-up time is 60 seconds under the documented test conditions.
- Check the transmitter configuration: Confirm that the selected gas type and measurement settings correspond to oxygen detection.
- Perform calibration checks: Follow the applicable procedure and use suitable calibration equipment to verify the oxygen reading.
- Test alarm functions: Confirm the configured alarm thresholds and output responses using the approved commissioning procedure.
- Investigate abnormal readings: Check cartridge seating, calibration status, environmental changes, and transmitter configuration if the measurement appears inconsistent.
- Record the maintenance work: Document the replacement part number, installation date, calibration results, and functional test findings.
Compatible System Components
| Component | Function |
|---|---|
| Honeywell XNXXSO1SS | Provides oxygen sensing for compatible XNX transmitters |
| Honeywell XNX Universal Transmitter | Processes sensor measurements and provides configured outputs |
| Honeywell XNX Sensor Cartridge Interface | Provides the designated electrical and mechanical connection |
| Oxygen Calibration Equipment | Supports verification of the oxygen measurement |
| Calibration Gas or Reference Atmosphere | Provides the applicable calibration reference |
| Transmitter Display and Controls | Support measurement review and maintenance operations |
| Configured Alarm Interface | Communicates alarm conditions to connected equipment |
| Fixed Gas Detection System | Integrates oxygen measurements into site monitoring and response arrangements |
Recommended Related Models
| Model | Product Type | Typical Application |
|---|---|---|
| Honeywell XNXXSO1FM | Oxygen Sensor Cartridge | Alternative oxygen cartridge version for applicable certified configurations |
| Honeywell XNXXSH1SS | Hydrogen Sulfide Sensor Cartridge | Monitoring hydrogen sulfide at the specified low-range settings |
| Honeywell XNXXSH2SS | High-Range Hydrogen Sulfide Sensor Cartridge | Monitoring higher hydrogen sulfide concentrations |
| Honeywell XNXXSC1SS | Carbon Monoxide Sensor Cartridge | Monitoring carbon monoxide with compatible XNX transmitters |
| Honeywell XNXXSL1SS | Chlorine Sensor Cartridge | Monitoring chlorine in supported fixed gas detection installations |
| Honeywell XNXXSS1SS | Sulfur Dioxide Sensor Cartridge | Monitoring sulfur dioxide with compatible XNX equipment |
Key Advantages
- Provides oxygen measurement across the specified 0–25% volume range.
- Supports replacement of the sensing element without replacing the complete transmitter.
- Integrates with compatible XNX Universal Transmitters.
- Supports configured oxygen alarms and plant monitoring functions.
- Allows routine calibration checks and cartridge replacement as part of planned maintenance.
Technical FAQs
What oxygen range does the XNXXSO1SS support?
The cartridge has a specified range of 0–25% by volume, with a default calibration point of 20.9% by volume. The transmitter’s configured alarm thresholds determine how measured oxygen levels are reported.
Can the XNXXSO1SS be installed in an XNX transmitter previously configured for hydrogen sulfide?
The cartridge must match the intended gas measurement. Replacing a hydrogen sulfide cartridge with an oxygen cartridge requires the appropriate transmitter configuration and commissioning checks; physical fit alone does not establish compatibility.
How does temperature affect the oxygen cartridge’s response?
The specified operating temperature range is -30 to +55°C. Sensor response time may increase at lower temperatures, and prolonged operation outside the recommended range can affect performance and service life.
What should be checked when the oxygen reading changes suddenly without an obvious process change?
Check for actual atmospheric changes, rapid barometric pressure changes, calibration issues, cartridge installation problems, and transmitter status indications. A sudden reading change should be assessed as a possible real oxygen hazard until the cause has been established.