Application of Electrochemical Sensors in Flue Gas Monitoring
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Application of Electrochemical Sensors in Flue Gas Monitoring

In today's world, environmental monitoring and industrial production have become the focus of global attention. The flue gas generated during combustion processes contains a variety of harmful gases, among which carbon monoxide (CO) and nitric oxide (NO) are major pollutants in flue gas, posing serious threats to human health and the environment. To effectively control and reduce the emission of these harmful gases, monitoring has become crucial. The wide-range electrochemical carbon monoxide and nitric oxide gas sensors developed by DDS (UK) provide an efficient and accurate solution for flue gas monitoring.
Meanwhile, both nitric oxide and carbon monoxide are highly harmful to the human body, with specific hazards as follows:
① Nitric Oxide (NO): High concentrations of nitric oxide can strongly irritate the respiratory tract, causing symptoms such as coughing, asthma, and even pulmonary edema. It may also interfere with the function of vascular endothelial cells, leading to abnormal blood pressure, promoting thrombosis, and affecting cardiovascular health. In addition, it can cross the blood-brain barrier, damage nerve cells, disrupt nerve signal transmission, and result in neurological symptoms such as dizziness and memory loss.
② Carbon Monoxide (CO): Carbon monoxide has an extremely high affinity for hemoglobin; when combined, they form carboxyhemoglobin, which hinders oxygen transport and causes tissue hypoxia. Acute carbon monoxide poisoning can lead to coma or even death, and some patients may develop delayed encephalopathy after regaining consciousness. Long-term exposure to low concentrations of carbon monoxide can cause neurasthenic symptoms, increase the burden on the heart, and induce cardiovascular diseases such as myocardial infarction.
For flue gas monitoring needs, engineers from Shenzhen Sandat Technology recommend DDS's electrochemical carbon monoxide sensor (GS+4CO) and nitric oxide gas sensor (GS+4NO). These two sensors provide an efficient solution for flue gas monitoring. By adopting DDS's advanced sensor technology, we can better control the emission of harmful gases and protect the environment and human health.

DDS (UK) Carbon Monoxide Sensor GS+4CO

DDS (UK) Nitric Oxide Sensor GS+4NO

As an electrochemical sensor, the nitric oxide sensor GS+4NO has the advantages of high sensitivity, good selectivity, strong stability, and resistance to interference from gases such as H₂S, NO₂, Cl₂, CO, SO₂, NH₃, and H₂. It is mainly used in scenarios requiring nitric oxide detection, such as flue gas analyzers and industrial toxic gas detection.

1. Wide Measurement Range

DDS sensors feature a much wider measurement range than similar products, enabling accurate detection of high concentrations of carbon monoxide and nitric oxide. In complex industrial flue gas environments, even if the gas concentration fluctuates within a large range, the sensor can still stably output accurate data, meeting the monitoring needs of different working conditions.

2. High Sensitivity and Precision

These sensors respond sensitively to carbon monoxide and nitric oxide, and can quickly capture tiny changes in gas concentration. The advanced electrochemical technology ensures high measurement precision, effectively reducing errors and providing a reliable basis for subsequent environmental protection decision-making and equipment regulation.

Wide Application Scenarios

(1) Thermal Power Industry

In thermal power plants, the flue gas generated by coal combustion contains large amounts of carbon monoxide and nitric oxide. Using DDS sensors allows real-time monitoring of the concentration of emitted gases, helping enterprises adjust combustion processes in a timely manner, reduce pollutant emissions, and meet environmental protection requirements. By installing these sensors, effective monitoring of boiler combustion status can be achieved, improving energy utilization efficiency and reducing harmful gas emissions.

(2) Waste Incineration Treatment

The flue gas generated from waste incineration has a complex composition and poses a great threat to the environment. DDS sensors can accurately monitor the concentrations of carbon monoxide and nitric oxide in the flue gas, assisting waste incineration plants in optimizing incineration processes and reducing environmental pollution.