Infrared SO2, NO, CO analyzer

Online infrared SO2, NO, CO analyzers generally consist of main components such as light source, optical system, sample chamber, detector, and signal processing circuit. Capable of real-time monitoring and continuously outputting data. This makes infrared analyzers widely used in continuous gas monitoring, especially for monitoring factory emissions and environmental air pollution.

onlineInfrared SO2, NO, CO analyzerIt is generally composed of main parts such as light source, optical system, sample chamber, detector, signal processing circuit, etc. The functions and roles of each part are as follows:

1. Light source

The light source usually uses a constant current infrared light source, such as quartz halogen lamps, xenon lamps, etc., which can generate a wide spectrum of infrared light. As needed, the light beam of the light source can be modulated into a specific wavelength range through an optical system. For gases such as SO2, NO, CO, etc., it is necessary to choose a suitable infrared wavelength range.

2. Optical system

The optical system is mainly responsible for guiding the infrared light emitted by the light source to the sample chamber, and filtering and focusing the light through optical components such as fibers, mirrors, lenses, interference filters, etc. Filter and interference filter can accurately select the absorption wavelength of gas molecules, ensuring that only the target gas effectively absorbs light.

3. Sample Room

The sample chamber is the core part of an infrared analyzer, used to contain the gases that need to be detected. The design of the sample chamber needs to ensure that the gas can be evenly distributed and that the infrared light can fully penetrate the sample chamber. For different gas concentration ranges, the length of the sample chamber will also vary. When the concentration is high, the sample chamber is shorter, and when the concentration is low, the sample chamber is longer.

4. Detector

The function of the detector is to receive the remaining infrared light after passing through the sample chamber and convert it into an electrical signal. Common infrared detectors include thermocouple type detectors, photoconductive type detectors, photodiodes, quantum detectors, etc. Different detectors are suitable for different wavelength ranges and sensitivity requirements.

5. Signal processing circuit

The signal processing circuit is mainly responsible for converting the electrical signal output by the detector into a digital signal, and performing amplification, filtering, correction, and other processing. The processed signal will be transmitted to a display or computer for displaying and recording analysis results.

onlineInfrared SO2, NO, CO analyzerThe working principle can be divided into the following steps:

1. The light source emits infrared light

The light source emits an infrared beam, which is modulated into a specific wavelength range of infrared light through an optical system (including filters, interference filters, etc.).

2. Infrared light passes through the sample chamber

The modulated infrared light passes through the sample chamber, which is filled with the gas to be measured. Gas molecules absorb specific wavelengths of infrared light when passing through the sample chamber. The degree of absorption is directly proportional to the gas concentration.

3. Receive residual light through a detector

After passing through the sample chamber, the remaining infrared light is received by the detector, which converts the optical signal into an electrical signal.

4. Signal processing and concentration calculation

The processing circuit amplifies and filters the electrical signal to calculate the absorbance of the gas. Based on the relationship between absorbance and gas concentration, the concentration of the target gas can be determined.

5. Display and record results

The gas concentration value is presented to the user through a display or computer interface, completing the output and recording of data.

onlineInfrared SO2, NO, CO analyzerCharacteristics:

1. High sensitivity

It has very high sensitivity and can detect low concentrations of gases. This is crucial for fields such as environmental monitoring, industrial emissions, and air quality control.

2. High selectivity

Infrared spectroscopy technology can accurately identify and distinguish specific absorption bands of different gases, thereby achieving accurate analysis of various gases such as SO2, NO, CO, etc. Due to the different absorption bands of different gases, this analysis method has high selectivity.

3. Real time monitoring

Capable of real-time monitoring and continuously outputting data. This makes infrared analyzers widely used in continuous gas monitoring, especially for monitoring factory emissions and environmental air pollution.

4. Non contact analysis

The working principle is gas analysis through light absorption, so there is no need to directly contact with gas. This makes the analysis process safer, simpler, and reduces errors caused by sample processing.

5. Longer service life

The main components such as the light source and detector have a long service life. The stability and durability of infrared technology make it cost-effective for long-term monitoring.

6. Multiple gases can be detected simultaneously

Simultaneous detection of multiple gases can be achieved through multi-channel design. Different detection channels can set different wavelength ranges for different gases, thereby simultaneously monitoring multiple gases such as SO2, NO, CO, etc.

7. Compact structure and strong adaptability

It generally adopts a compact structural design, which is convenient for installation and movement, and can adapt to different working environments and detection needs.

onlineInfrared SO2, NO, CO analyzerApplication:

1. Environmental monitoring

Widely used for air pollution monitoring, especially for monitoring air pollutants such as SO2, NO, and CO. These pollutants have a significant impact on air quality and human health, so real-time monitoring of their concentrations is crucial for environmental protection.

2. Industrial emission testing

In the industrial production process, especially in industries such as coal, chemical, and steel, a large amount of harmful gases such as SO2, NO, and CO are emitted. It can be used to monitor the emission concentration of these gases, ensure compliance with environmental regulations, and take corresponding control measures.

3. Safety monitoring

Monitoring the concentration of CO gas is very important in industries such as coal mines, oil, and natural gas that are flammable and explosive. It can monitor the concentration changes of CO in real time to ensure the safety of the working environment.

4. Laboratory research

In the laboratory, it can be used for gas analysis, chemical reaction monitoring and other experiments, providing precise gas concentration data for researchers.