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Introduction
Complete Continuous Emission Monitoring System (CEMS) solutions for continuous monitoring of industrial stack emissions, including gas analysis, sampling, conditioning, flow measurement and data acquisition.
Measured Gas: SO₂ | NOx | CO | CO₂ | O₂ | NH₃ | H₂O | PM | Dust | Flow rate | Pressure | Temperature
Applications: Power plants, Waste incineration plants, Cement factories, Steel and metallurgical plants, Petrochemical plants, Chemical manufacturingfacilities.
Configurations: Cold-dry | Hot-wet
| Model | Standard | Low Emission | Ultra-low Emission |
| Range (SO2/NOX/CO) | 0-300-3000ppm | 0-100-300ppm | 0-20-100ppm |
| Range (CO2/O2) | 0-5% to 0-100% vol | 0-5% to 0-100% vol | 0-5% to 0-100% vol |
| Output | 4-20mA and RS485 | ||
| Input | 4-20mA and RS485 | ||
| Zero Drift | ≤±2%F.S/7d | ||
| Span Drift | ≤±2%F.S/7d | ||
| Power Supply | 100-240V | ||
| Ambient temperature | -20℃～+60℃; |
| Power supply | 220V AC 50Hz; |
| Blowback air source pressure | 0.3MPa～0.8MPa; |
| Maximum power | 25W; |
| Accuracy | ±3%FS; |
| Range | 0~500℃; |
| Flow rate range | 0m/s～40m/s; |
| Output | 3 way (4-20mA) or RS485; |
| Protection Grade | IP65; |
| Principle | Optical backscatter of light from a red Laser |
| Measuring object | Particles in the gas steam |
| Measuring Characteristics | Range : (0～100, 500, 1000, 2000, 10000)mg/m3, Selectable |
| Zero Drift : ±2%FS/24hr | |
| Span Drift : ±2%FS/24hr | |
| Repeatability : ±2%FS | |
| Response Time : ≤ 10S | |
| Measuring Length :（0.5～20）M |
Continuously Emission Monitoring System (CEMS) is a specialized system used to monitor. Meanwhile, it measures the emissions of pollutants from industrial processes and facilities. ESEGAS engineer team designs CEMS to provide real-time data on the release of pollutants into the environment, helping to ensure compliance with environmental regulations and standards.
CEMS typically consist of several components that work together to measure and monitor emissions. These components may include:
CEMS play a crucial role in environmental monitoring and protection. By continuously monitoring emissions, they help industries identify and control sources of pollution, optimize processes to reduce emissions, and ensure compliance with environmental regulations. They also provide valuable data for environmental impact assessments and help in the development of emission reduction strategies.
Continuous Emission Monitoring System (CEMS) is used to continuously measure the concentration of pollutants in flue gas emitted from industrial processes. The system extracts flue gas from the stack, conditions the sample (removing dust, moisture), and then analyzes the gas composition using gas analyzers. The measured data is recorded and transmitted to monitoring platforms or regulatory authorities
Can measure following gases according to the customer applications .
Additional parameters like temperature, pressure, flow rate, dust, and humidity can also be monitored.
Several measurement technologies are widely used in CEMS analyzers, including:
Each technology is selected depending on the gas type and measurement range.
CEMS systems are widely used in industries that produce flue gas emissions, such as:
These industries must monitor emissions to comply with environmental regulations.
Calibration and maintenance depend on regulatory requirements and system design. Generally:
Regular maintenance ensures measurement accuracy and long-term stability.
A typical CEMS system includes:
ESEGAS CEMS analyzers provide high accuracy and stability, typically within ±1–2% of full scale depending on the technology and calibration. Although laboratory measurements may achieve slightly higher precision under controlled conditions, CEMS offers the advantage of real-time continuous monitoring, which is essential for emission compliance.
Many countries require CEMS installation under environmental regulations, for example:
Right now ESEGAS can provide cold-dry and hot-wet method CEMS for the different applications .
CEMS systems use several techniques to manage harsh flue gas conditions:
These measures ensure reliable and stable measurements.
Key factors include:
The Continuous Emission Monitoring System (CEMS) continuously extracts or measures flue gas from stationary emission sources and determines the concentration of specific pollutants and relevant flue gas parameters. Moreover, a typical CEMS integrates the sampling system, gas analyzers, gas conditioning system, data acquisition system, calibration system, and data processing and reporting functions.
Specification of Gas Analyzer
| Model | Standard | Low Emission | Ultra-low Emission |
| Range (SO2/NOX/CO) | 0-300-3000ppm | 0-100-300ppm | 0-20-100ppm |
| Range (CO2/O2) | 0-5% to 0-100% vol | 0-5% to 0-100% vol | 0-5% to 0-100% vol |
| Output | 4-20mA and RS485 | ||
| Input | 4-20mA and RS485 | ||
| Zero Drift | ≤±2%F.S/7d | ||
| Span Drift | ≤±2%F.S/7d | ||
| Power Supply | 100-240V | ||
Specifications of Flow Meter (gas temperature, pressure, and flow velocity)
| Ambient temperature | -20℃～+60℃; |
| Power supply | 220V AC 50Hz; |
| Blowback air source pressure | 0.3MPa～0.8MPa; |
| Maximum power | 25W; |
| Accuracy | ±3%FS; |
| Range | 0~500℃; |
| Flow rate range | 0m/s～40m/s; |
| Output | 3 way (4-20mA) or RS485; |
| Protection Grade | IP65; |
Specifications of Dust Monitor
| Principle | Optical backscatter of light from a red Laser |
| Measuring object | Particles in the gas steam |
| Measuring Characteristics |
Range : (0～100, 500, 1000, 2000, 10000)mg/m3, Selectable |
| Zero Drift : ±2%FS/24hr | |
| Span Drift : ±2%FS/24hr | |
| Repeatability : ±2%FS | |
| Response Time : ≤ 10S | |
| Measuring Length :（0.5～20）M |
We will contact you within 1 working day, please pay attention to the email with the suffix “[email protected]” .
