Product Introduction

1. Core Technology and Measurement Principles‌
‌1.1 NDIR (Non-Dispersive Infrared) Technology‌
-- Concentration measurement is achieved by detecting the absorption characteristics of gases to specific infrared wavelengths, supporting high-precision analysis of infrared-sensitive gases such as CO, CO₂, NO, SO₂, and CH₄.‌
‌1.2 Oxygen Measurement Unit‌
-- Optional magnetomechanical or electrochemical sensors, covering the O₂ measurement range of 0-5% to 0-25%.‌
1‌.3 Anti-interference Design‌
-- The multi-layer detector technology is used to effectively reduce the interference of background gases such as water vapor, and improve the choice in complex flue gas environments.

2. Main technical parameters
‌2.1 Measuring range‌:
CO: 0-1000 ppm to 0-100%
CO₂: 0-1000 ppm to 0-100%
SO₂: 0-2500 ppm
NOx: 0-500 ppm‌
‌2.2 Accuracy and stability‌:
Linear error ≤1% FS, repeatability ≤1%
Zero drift ≤1% FS/week, range drift ≤1% FS/week‌.
‌2.3 Response time‌:
T90 ≤10 seconds (oxygen) or <5 seconds (other gases).
‌2.4 Output interface‌:
Supports 4-20 mA analog signal and communication protocols such as RS 485 and PROFIBUS‌.

3. Functional Advantages‌
‌3.1 Automatic Calibration‌
- Supports automatic calibration of air zero point, and only needs to use standard gas for span calibration every 3-6 months to reduce maintenance frequency‌.
‌3.2 Human-computer interaction optimization‌
- Large screen backlit LCD display, plain text menu operation, convenient for on-site personnel to quickly read data‌.
- Optional handheld remote control to achieve remote parameter setting and data query‌.
3‌.3 Durability and adaptability‌
- Corrosion-resistant materials and compact design, suitable for harsh industrial environments such as high temperature and high dust‌.
- Preheating time only takes 5 minutes, and supports continuous battery power supply for more than 8 hours‌.
4. Typical Application Scenarios‌
‌4.1 Industrial Emission Monitoring‌: Online monitoring of flue gas composition of coal-fired power plants, steel plant blast furnaces, cement kilns and other equipment‌.
‌4.2 Environmental Compliance‌: Real-time detection of pollutant concentrations such as SO₂ and NOx to ensure compliance with emission standards‌.
‌4.3 Energy efficiency optimization‌: Improve fuel utilization through combustion process gas analysis‌.
5. Notes‌
‌5.1 Selection recommendations‌: The sensor configuration should be selected according to the actual gas component combination requirements. Some models support simultaneous measurement of up to 4 components‌.
‌5.2 Maintenance requirements‌: Clean optical components and filters regularly to prevent dust or condensed water from affecting measurement accuracy‌.

6. Working principle

There are usually two working principles of this flue gas analyzer: electrochemical working principle and infrared working principle. The common portable flue gas analyzers on the market are often a combination of these two principles. Specifically, by installing the working electrode, counter electrode and reference electrode in a cylindrical cell made of plastic, and filling the electrolyte between the electrodes, it is encapsulated using a diaphragm made of porous tetrafluoroethylene. The preamplifier is connected to the sensor electrode, and a certain potential is applied between the electrodes so that the sensor can be in a working state. When the gas undergoes oxidation or reduction reaction in the electrolyte, the equilibrium potential of the electrode will change, and the change value is proportional to the gas concentration.

7. Measured gas and performance indicators

7MB2335-0AH00-3AA1 can measure a variety of gases, including SO₂, NO, NO₂, CO, H₂S, etc. The sensitivity of different gas sensors is different, and the order from high to low is generally H₂S, NO, NO₂, SO₂, CO. The response time is usually between a few seconds and tens of seconds, generally not more than 1 minute. The lifespan of these sensors also varies, ranging from half a year to several years. For example, the lifespan of some CO sensors can even reach several years.

​This flue gas analyzer is suitable for a variety of applications, including but not limited to the following aspects:

-- Environmental monitoring: In environmental monitoring stations, sewage treatment plants, etc., it is used to monitor the concentration of pollutants in the atmosphere and water bodies, and provide data support for environmental decision-making.

--Scientific research experiments: In scientific research institutions and university laboratories, it is used for gas analysis in experiments such as chemical reactions and biological processes, providing accurate data support for scientific research.

 -- Industrial process control: Used for boiler adjustment, optimizing combustion efficiency, saving energy, and controlling emissions.

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