Featured Air Quality & Gas Monitoring Solutions
Explore our precision-engineered controllers designed for seamless Integration with French Building Management Systems (BMS) and safety control relays.
Industrial & Commercial Landscape of Ozone Control in France
Across France’s expanding industrial hubs—from the chemical and food processing plants in Île-de-France and Auvergne-Rhône-Alpes to the renowned wineries of Bordeaux and Burgundy—ozone (O3) has evolved into one of the most vital clean tech oxidants for water purification, indoor surface disinfection, and air treatment. Ozone offers unmatched germicidal power without leaving chemical residues. However, because high ambient concentrations of ozone present severe occupational safety hazards, deploying an accurate Ozone Controller With Relay Output in France has become a standard engineering mandate.
Under the strict health and safety directives enforced by the French Ministry of Labour (Code du Travail) and the recommendations of the National Research and Safety Institute (INRS), ambient exposure to ozone in workplace environments must be rigorously regulated. The Occupational Exposure Limit (VLEP - Valeur Limite d'Exposition Professionnelle) in France sets strict thresholds: a 15-minute short-term exposure limit (VLE) of 0.1 ppm (0.2 mg/m³) and an 8-hour time-weighted average (VME) of 0.05 ppm. Achieving compliance requires real-time gas monitoring coupled with instant hardware interlocking mechanisms.
Why Relay Outputs are Essential: A relay output acts as an autonomous safety switch. When ozone levels surpass pre-configured thresholds, the relay instantly triggers exhaust fans, shuts down upstream ozone generators, activates audible/visual alarm beacons, or alerts Building Management Systems (BMS)—guaranteeing physical safety independent of network latency.
Instant Hardware Response
Dry-contact relays (NO/NC) immediately actuate external ventilation, isolating high O3 concentrations within milliseconds of threshold breach.
INRS & Labor Compliance
Ensures full alignment with French health standards, preventing worker exposure to harmful O3 gas during industrial decontamination cycles.
BMS & Modbus Integration
Supports Modbus RS485 and 4-20mA/0-10V analog signals alongside physical relays for comprehensive smart building telemetry.
Key Application Scenarios in the French Market
The adoption of ozone controllers equipped with dry contact relay switches spans multiple key sectors across the French economy. Below are primary field applications where reliability and precision are paramount:
1. Viticulture & Oenology (Wine Cellars)
In regions like Bordeaux, Champagne, and the Loire Valley, winemakers utilize gaseous ozone to sanitize oak barrels, bottling lines, and storage cellars without introducing taints or chemical off-flavors. An ozone controller with dual relay outputs guarantees that ozone concentration reaches lethal levels for microbes during sanitization, and subsequently triggers high-speed exhaust fans to purge the room before staff re-entry.
2. Municipal Wastewater & Water Treatment
Leading water utilities across France (such as Veolia and SUEZ) rely heavily on ozone oxidation for micropollutant removal and drinking water disinfection. Ozone controllers are installed in generator rooms and off-gas destruction units. The relay output automatically trips shutoff valves if ambient leaks occur, mitigating risks to facility operators.
3. Food Processing & Agricultural Storage
French agricultural processors use controlled ozone dosing to neutralize ethylene gas, extending the shelf life of stored produce and controlling mold spores in cheese aging cellars. Precise ozone controllers maintain target ppm levels continuously via relay hysteresis control.
Technical Excellence: Engineering the Ideal Ozone Controller
When selecting an ozone controller with relay output for deployment in French facilities, system integrators and HVAC contractors prioritize stability, calibration persistence, and robust input/output architecture.
- Advanced Sensor Technology: Incorporating high-stability electrochemical sensors engineered to eliminate cross-sensitivity to humidity changes and common volatile organic compounds (TVOCs).
- Programmable Dual Relay Outputs: Designed with SPDT relay contacts (up to 3A/230VAC), enabling independent control over low-level alarm warnings and high-level emergency shutdown systems.
- Environmental Compensation Algorithms: Built-in dynamic compensation for temperature and humidity fluctuations typical of Northern French winters or humid Mediterranean coastal climates.
- Clear Visual Telemetry: High-resolution LCD display providing real-time concentration readouts in ppm or µg/m³, system status icons, and relay activation indicators.
About Tongdy Sensing Technology Corporation
Helping You Build and Maintain a Healthy Indoor Environment
Our work makes a difference in helping you create healthy indoor air quality. As one of the earliest companies engaged in air quality monitoring products, Tongdy has always focused its strong technology development and design capabilities on indoor air quality monitors and gas controllers.
With over 15 to 20+ years of dedicated expertise in IAQ & HVAC solutions, Tongdy is trusted by global clients for high-quality products and professional service, fully compliant with international and European Green Building standards (including WELL, LEED, and French HQE certifications).
Core Values & Technological Strengths
We foster research and development to obtain accurate air quality data, empowering facility managers, engineers, and safety officer in France and worldwide to make data-driven decisions.
Innovative Calibration Algorithm
Proprietary technology and effective dynamic calibration methods support superior data accuracy across variable ambient operating conditions.
Professional Multi-Sensor Module
Specialized multi-sensor module featuring a sealed cast aluminum structure housing up to six high-precision sensors inside a compact enclosure.
Continuous R&D Investment
Tongdy-owned manufacturing and significant annual reinvestment in R&D guarantee long-term product reliability, continuous innovation, and software optimization.
Real-Time Data Monitoring & Platform Analytics
The proprietary "MyTongdy" Platform empowers users to read, monitor, and analyze indoor air quality and gas concentration data on PC or mobile applications. By combining physical relay output controllers with digital cloud analytics, managers gain complete control over their physical environment and compliance records.
Social Responsibility & Global Collaboration
Tongdy actively develops advanced air quality monitors and is devoted to creating healthy indoor environments, striving to serve as an exemplary corporate citizen. We contribute to public welfare by partnering with global organizations such as the International WELL Building Institute (IWBI)—the world’s leading organization deploying people-first places to advance health culture, specifically exploring the impact of indoor air quality on human health based on The WELL Building Standard™.
Our tailored gas controllers, standard thermostats, and ozone detection units provide flexible hardware options, professional engineering support, and fast delivery to deliver cost-effective solutions for clients across France and the European Union.
Certificates & Quality Assurance
All products undergo stringent factory calibration and international certification checks to ensure compliance with European standards.
Complete Product Portfolio for Air Quality & Gas Control
Browse our full range of 100+ commercial-grade monitors and controllers designed for HVAC, BMS, and smart industrial automation in France.
