Select from our certified industrial safety systems. Fully compatible with OEM custom SO2 sensor integrations.
Sulfur Dioxide (SO2) is one of the most strictly monitored toxic gases globally, requiring specialized, high-accuracy sensing hardware across power generation, smelting, chemical processes, and environmental monitoring systems. Engineering procurement managers encounter persistent difficulties finding OEM partners that can balance long-term sensor stability, high cross-sensitivity resistance, and certified explosion-proof compliance.
Global regulations from the US EPA, European Union Clean Air Directives, and China's environmental policy dictate strict emission ceilings. Real-time CEMS (Continuous Emissions Monitoring Systems) must record parts-per-billion (ppb) concentrations of SO2. Xinhaosi designs and manufactures industrial-grade, highly precise electrochemical sensors and complete gas monitoring infrastructures that serve global OEMs directly from our state-of-the-art facilities.
Established in 2003, Xinhaosi Electronic Detection Technology Co., Ltd. has developed into a highly influential, reliable manufacturer in the safety and gas detection sector. We supply customer-centric products and bespoke technical solutions designed to ensure safety in public infrastructure, industrial plants, and private homes globally.
Utilizing state-of-the-art manufacturing lines and high-quality electronic detection components, we make invisible gas hazards clear and manageable. Our development cycle focuses on the production of long-term stable components, ensuring every sensor, valve, and digital controller operates flawlessly in high-pressure situations.
End-to-End integration designed to solve real-world emission monitoring, residential security, and process safety challenges.
Precision-focused detection arrays built to survive harsh operating conditions in refineries, smelting sites, and chemical processing complexes.
Compact, highly stable detectors optimized for residential utility monitoring, commercial food storage facilities, and standard retail outlets.
Designed to shut off gas supply fast, protecting facilities and homes from leaks. Engineered for continuous, low-power operation.
Large-scale monitoring configurations connected to digital networks, enabling real-time status updates across city-wide gas mains.
Designed for seamless B2B hardware integration into existing monitoring equipment.
The electrochemical SO2 sensor utilizes a 3-electrode design (working, counter, and reference electrodes) operating on a liquid or solid polymer electrolyte. The target gas diffuses through a porous membrane where it undergoes chemical oxidation at the working electrode:
The resulting flow of electrons is directly proportional to the gas concentration. To ensure this signal is clean, Xinhaosi utilizes low-noise transimpedance amplifiers, dynamic temperature-compensation algorithms, and customized hardware packages (ranging from mini-4 series to standard 7-series industrial formats).
| Technical Parameters | Standard Range (0-20ppm) | High Range (0-2000ppm) |
|---|---|---|
| Nominal Sensitivity | 370 ± 80 nA/ppm | 30 ± 10 nA/ppm |
| Response Time (T90) | < 30 seconds | < 25 seconds |
| Zero Drift (-20°C to +40°C) | < 0.2 ppm equivalent | < 5 ppm equivalent |
| Output Linearity | Linear under full scale | Linear under full scale |
| Expected Service Life | > 2 years in clean air | > 2 years in clean air |
At Xinhaosi, every production run of gas sensors and solenoid valves undergoes rigorous testing. We execute multi-point temperature chamber calibrations (ranging from -40°C to +55°C) to map cross-temperature response and prevent drift once installed in the field.
Our OEM manufacturing lines conform to international quality standards, ensuring our partners obtain all necessary certifications for their target regions, including ATEX, IECEx, UL, CE, RoHS, and local fire safety approvals.
Whether you require standard 4-20mA, Modbus RTU, or high-performance wireless transmission protocols, our team of development engineers works with your staff from initial prototype designs through final mass manufacturing.
We work closely with global safety instrumentation and industrial automation corporations.
Read about Xinhaosi's trade shows, corporate achievements, and new gas detection technology releases.
Xinhaosi Electronic Detection Technology Co., Ltd. officially launched its new Handheld Uncooled Infrared Gas Leak Detector, featuring dual-technology fusion, ultra-fast response, and long-distance non-contact detection...
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XINHAOSI recently participated in the 5th Western China Cross-Border E-Commerce Expo held in Chengdu, bringing together cross-border e-commerce platforms, global buyers, and manufacturers to open new overseas markets...
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XINHAOSI recently participated in the 2026 Sichuan (Chengdu) – Indonesia Industry Matchmaking Conference, exploring new industrial cooperation models and expanding business opportunities across Southeast Asia...
Read Full Article →Get answers to critical integration, calibration, and operating questions from our design engineering team.
Browse our complete range of certified detectors, output units, controllers, and solenoid valves.
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