Odor gas detector Real-time Monitoring of Odor Concentration (OU) and Concentration of Multiple Odor Gases

Odor gas detector system employs a high-sensitivity sensor to continuously monitor parameters such as odor concentration (OU), ammonia, hydrogen sulfide, and VOCs in ambient air in real time. It is suitable for monitoring fugitive emissions from locations such as landfills, sewage treatment plants, and livestock farms, providing accurate data support for odor pollution control.

Odor gas detector is a device for continuous automatic monitoring of various odorous substances in ambient air. This system is mainly used in areas prone to odor generation, such as landfills, sewage treatment plants, livestock farms, and chemical industrial parks, to monitor fugitive odor pollution in real time, providing a basis for environmental management, pollution source tracing, and remediation assessment.

This instrument has the capability for simultaneous monitoring of multiple parameters. Its core monitoring indicators include comprehensive odor concentration (OU) and multiple characteristic odorous substances. Specific monitored components typically include ammonia, hydrogen sulfide, methanethiol, dimethyl sulfide, dimethyl disulfide, carbon disulfide, styrene, trimethylamine, and total volatile organic compounds (VOCs). By simultaneously acquiring odor (OU) values and the concentrations of multiple characteristic gases, the system comprehensively reflects the overall intensity and specific chemical composition of odor pollution, facilitating accurate identification of pollution sources.

The instrument employs a combination of high-sensitivity sensors based on different principles to achieve accurate measurements. For example, electrochemical sensors are commonly used to monitor inorganic gases such as hydrogen sulfide and ammonia; photoionization detectors or metal oxide semiconductor sensors are used to monitor VOCs and some organic sulfides. For monitoring odor concentration (OU values), some devices use sensor arrays conforming to olfactory principles or a combination of dynamic dilution and sensors. These sensors are integrated into a single analytical unit, enabling continuous and automated analysis of sample gases through optimized gas path design.

In practical deployments, the system is typically installed within the plant boundary or area requiring monitoring, such as downwind of the prevailing wind direction, near the plant boundary, or near the main odor-generating unit. The device continuously draws ambient air through a built-in sampling pump, pre-processes it, and then sends it to the sensor module for analysis. Monitoring data (including real-time values of various gas concentrations, historical trends, statistical indicators, etc.) is recorded by a data acquisition unit and remotely transmitted to a central monitoring platform or environmental data center via wired or wireless networks. The central monitoring platform is responsible for receiving and managing data. The platform software features real-time data display, historical data query, statistical analysis, and report generation. Users can intuitively view the concentration change curves of pollutants at each location. The system typically includes a tiered alarm function. When the concentration of any monitored parameter exceeds the preset limit, the system automatically triggers audible and visual alarms, SMS alerts, or platform message alarms, promptly notifying relevant personnel to investigate abnormal emissions or assess the impact of the event.

Therefore, Odor gas detector, with its multi-parameter, continuous, and automatic monitoring characteristics, has become an effective tool for resolving odor pollution complaints, implementing corporate environmental responsibility, and achieving refined control of odor at factory boundaries. It transforms the traditional intermittent monitoring mode, which relies on manual olfaction, into an objective, continuous, and data-driven proactive monitoring mode, improving the environmental supervision and control capabilities for odor pollution.