Specific Application Examples of CO Sensors in Various Fields

At present, gas sensors are widely used in gas detection equipment for industrial sites such as various gas fires and flue gas analysis. For example, electrochemical sensors are the preferred choice for portable flue gas analyzers; carbon monoxide sensors and sulfur dioxide sensors, for instance, are commonly employed in flue gas analyzers. In addition, they have a wide range of applications in many other fields.

The concentration of carbon monoxide is one of the important indicators of spontaneous combustion fires in coal mines. Coal mines are prone to carbon monoxide poisoning accidents. When a coal mine drills a water exploration borehole in a transportation roadway, dry drilling causes combustion inside the borehole, releasing a large amount of carbon monoxide and resulting in personnel poisoning and death.

For this reason, China's coal mine safety regulations clearly require real-time monitoring of carbon monoxide gas concentration in locations such as main roadways, return air roadways, coal mining faces, driving faces, and goafs, with alarms triggered when the gas concentration reaches or exceeds the preset dangerous threshold. At this time, carbon monoxide sensors GS+4CO and GS+7CO come into play.

Currently, there is a wide variety of water heaters on the market, and consumers often choose blindly. Meanwhile, problems such as carbon monoxide leakage caused by improper selection also trouble consumers.

Therefore, Haier's new Wi-Fi intelligent security gas heater, which prevents carbon monoxide poisoning, uses carbon monoxide sensors to realize real-time monitoring of the gas environment inside and outside the appliance. Once carbon monoxide leakage is detected, an audible and visual alarm is activated immediately, and the information is sent to the bound mobile phone at the same time. Examples include S+4 2ECO and S+4 2ECO-LP.

In recent years, with the intensification of air pollution, government departments have begun to pay attention to indoor air quality. In the first-phase ventilation and energy-saving project of the Beijing Municipal Government Service Center, a large number of carbon monoxide sensors have been adopted in underground garages that cannot achieve natural ventilation.

When a car is left idling in a parking lot, it produces a large amount of toxic and harmful carbon monoxide gas. Once the carbon monoxide sensor detects an excessive concentration, the ventilation equipment in the facility is automatically turned on to ensure ventilation and personnel safety.

Therefore, in some domestic underground garage air environment monitoring systems, the installation of carbon monoxide sensors enables multi-point real-time detection of carbon monoxide concentration in different areas of the garage. The monitored carbon monoxide concentration can also be uploaded to the central platform via the network for display.

In recent years, carbon monoxide sensor monitoring equipment has been applied to the air environment monitoring systems of underground garages in some cities. Examples include GS+4COSLI-M, S+4 2ECO, and S+4 2ECO-LP.

Carbon monoxide concentration testers are used for smoking cessation in hospitals.

Carbon monoxide sensors also have certain applications in the field of smoking cessation and preventive healthcare. In smoking cessation clinics of some domestic hospitals, doctors conduct carbon monoxide tests on individual patients.

During the test, the patient simply breathes into a concentration detector equipped with a carbon monoxide sensor. The degree of smoking and physical dependence can be analyzed through the carbon monoxide concentration, allowing smokers to understand their health status clearly and directly.

For example, a reading below 10 indicates non-smoking or very light smoking, 10–20 indicates moderate smoking, and above 20 indicates heavy smoking. An example is S+4 2ECOH.

Facing new applications and demands for carbon monoxide sensors, sensor products from British company DDS (a subsidiary of Shenzhen Wuliang Sensor Technology Co., Ltd.) have been continuously innovated in the fields of life safety, environment, and energy.

For example, in some industrial sites and flue gas analysis applications, carbon monoxide sensor instruments often suffer from high readings or false alarms due to the influence of on-site hydrogen gas.

In response, DDS has launched new high hydrogen-resistant four-electrode carbon monoxide sensors: GS+A4CO, GS+A4COF, GS+A5CO, GS+A7CO, and GS+A7COF. These products effectively avoid the impact of hydrogen on monitoring performance and improve the accuracy and reliability of carbon monoxide sensors.