Practical Application of Nexisense Intelligent Ozone Sensor Modules in Hospital Air Disinfection Units

Hospitals are high-density public spaces with frequent movement, where patients, visitors, and medical staff coexist, and many individuals have compromised immunity. Airborne bacteria, viruses, and fungi can easily spread, causing cross-infections. Therefore, air disinfection is essential in hospital operations, with air disinfection units being critical equipment.

Among air disinfection technologies, ozone disinfection is widely used in operating rooms, wards, and sterile supply rooms due to its high efficiency, speed, and residue-free characteristics. Accurately and safely controlling ozone concentration while ensuring effective disinfection is a core design challenge, where Nexisense intelligent ozone sensor modules provide crucial value.

Hospital Air Disinfection Needs and Challenges

Hospital air disinfection must balance effective sterilization with human safety. Too low ozone concentration extends disinfection time and reduces sterilization efficiency, increasing infection risks, while too high concentration may irritate the respiratory tract and mucous membranes or create safety hazards. In critical areas like sterile supply rooms and operating rooms, air disinfection is not only a procedural issue but also a part of quality control and management systems, requiring precise internal ozone monitoring and feedback.

Mechanism of Ozone Air Disinfection

• Ozone (O₃) contains a highly unstable third oxygen atom, which easily detaches

• This generates strong oxidation reactions, quickly destroying bacterial, viral, and fungal cell walls

• It irreversibly damages microbial proteins, nucleic acids, and enzyme systems, achieving inactivation

• After oxidation, ozone decomposes into oxygen (O₂) naturally, leaving no secondary contamination

Ozone disinfection has mature applications in water treatment, food processing, and medical sterilization, particularly suitable for high-cleanliness medical environments.

Importance of Ozone Concentration Monitoring in Air Disinfection Units

Hospital air disinfection units typically generate ozone via high-voltage discharge, converting purified oxygen into ozone. Real-time monitoring and closed-loop control of ozone concentration are essential. Without precise monitoring, three major risks arise:

• Inability to quantify or verify disinfection effectiveness

• Difficulty achieving automatic start/stop and smart control

• Potential safety hazards from ozone overexposure

High-stability, high-precision ozone sensors are therefore standard design requirements in modern hospital air disinfection units.

Overview of Nexisense SGA-400/700 Intelligent Ozone Sensor Modules

The SGA-400/700 series is a standardized, modular solution designed for system integration and engineering applications, addressing the challenges of “difficult integration, calibration, and maintenance” in ozone detection. Core features include:

• OEM integration for hospital air disinfection units and medical devices

• Plug-and-play to reduce R&D cycles

• Long-term stable operation across various disinfection scenarios

Core Technology Principles and Performance Advantages

• High-quality sensing core: Imported ozone gas sensor ensures high selectivity and stable response, reducing cross-interference

• Multi-level signal processing & intelligent computation: Signal amplification, filtering, digitization, and algorithmic processing improve signal-to-noise ratio and precision

• Full-range temperature and humidity compensation: Three-point compensation ensures consistent measurements under varying hospital conditions

• High-precision standard gas calibration: Calibrated with high-precision ozone gas across the full detection range; no secondary calibration required

System Integration and Communication Interface Advantages

• 0–5 V analog voltage output

• TTL digital signal output

• Seamless connection to PLC, DCS, DDC, and data acquisition systems

• Facilitates closed-loop control with mainboards

For air disinfection unit manufacturers, a single sensor solution can rapidly adapt to multiple applications without repeated redesign.

Applications in Typical Hospital Environments

• Operating room air disinfection systems

• Sterile supply room centralized disinfection units

• Ward and isolation area air disinfection units

• Hospital public area smart disinfection systems

Real-time ozone monitoring allows automated adjustment of disinfection duration and intensity, ensuring standardized, traceable disinfection processes.

Practical Significance for Manufacturers and Hospital Management

• Reduces R&D and production costs

• Shortens time-to-market

• Enhances overall air disinfection equipment quality

• Strengthens scientific and controllable hospital infection control

• Creates a reliable technical loop from equipment manufacturing to hospital operation

  
  

FAQ

1. Why must hospital air disinfection units monitor ozone concentration? To ensure sterilization efficacy while avoiding human irritation.

2. Does SGA-400/700 require secondary calibration on-site? No, modules are factory-calibrated and ready-to-use.

3. Is the module suitable for long-term continuous operation? Yes, designed for stable long-term use.

4. Can it directly connect to existing disinfection unit control systems? Yes, supports standard analog and digital outputs for integration.

5. Is it sensitive to temperature and humidity changes? Full-range compensation minimizes environmental effects.

6. Can it be used outside hospitals? Yes, applicable in research, industrial, and environmental monitoring scenarios.

7. Does the sensor size affect equipment design? No, compact and lightweight for embedded installation.

8. Does Nexisense support customized integration? Yes, flexible technical support is available per project requirements.

Conclusion

As hospitals demand higher infection control and air quality management, air disinfection devices are evolving from functional to intelligent and controllable systems. Nexisense SGA-400/700 intelligent ozone sensor modules provide reliable detection, mature signal processing, and highly compatible system integration, offering a solid technical foundation for hospital air disinfection units. Accurate ozone monitoring and safe control ensure effective disinfection, making Nexisense a long-term value contributor in modern medical environments.