Stack Emission Monitoring

Stack emission monitoring is a critical process used to measure pollutants released from industrial stacks or chimneys into the atmosphere. At Aaxis Nano, we provide stack emission monitoring systems designed to measure SO₂, NOx, CO, CO₂, particulate matter, HCl, HF, and other flue gases in real-time, helping industries achieve regulatory compliance, environmental sustainability, and accurate emission tracking. With modern technologies like CEMS (Continuous Emission Monitoring Systems) and non-dispersive infrared sensors, stack emission monitoring becomes both precise and robust. Our solutions meet the needs of industries seeking CPCB compliance, stack gas analysis, and real-time online stack emission data monitoring, especially in power plants, cement factories, steel industries, and chemical manufacturing units.

What Is Stack Emission Monitoring?

Stack emission monitoring refers to the measurement of gases and particulates that are emitted from industrial stacks, such as chimneys or exhaust ducts, into the atmosphere. These emissions are monitored to control pollution, ensure regulatory compliance, and protect environmental and public health.

Why Stack Emission Monitoring Matters

- Ensures regulatory compliance with CPCB, SPCB, and international norms

- Helps industries monitor and reduce air pollution

- Supports data-driven decision-making for environmental management

- Enables real-time corrective actions and compliance reporting

Key Parameters Measured in Stack Emissions

1. Gaseous Pollutants

- SO₂ (Sulphur Dioxide)

- NOx (Nitrogen Oxides)

- CO (Carbon Monoxide)

- CO₂ (Carbon Dioxide)

- O₂ (Oxygen)

- HCl (Hydrogen Chloride)

- HF (Hydrogen Fluoride)

- NH₃ (Ammonia)

2. Particulate Matter

- PM2.5 and PM10

- Total Suspended Particulates (TSP)

3. Flow & Velocity

- Stack gas flow rate, temperature, pressure, and velocity

Technologies Used in Stack Emission Monitoring

1. Continuous Emission Monitoring Systems (CEMS)

- Real-time monitoring

- Automated data logging & transmission

- Suitable for 24/7 monitoring in power plants and manufacturing

2. Non-Dispersive Infrared (NDIR) Analyzers

- Highly accurate gas concentration measurement

- Compact and reliable for permanent installations

3. FTIR (Fourier Transform Infrared) Technology

- For multi-gas analysis in a single unit

- Detects even trace-level components

4. Opacity Monitors

- Measures particulate levels based on light scattering

Stack Emission Monitoring System Components

Component	Description
Gas Analyzer	Measures specific gases (SO₂, NOx, CO, etc.)
Dust Monitor	Detects particulate concentration
Sample Probe & Line	Extracts sample from stack and transports it to analyzers
Data Logger / DAHS	Stores and transmits data to central servers
Calibration System	Ensures consistent analyzer accuracy
Controller / PLC	Controls, monitors and alarms the emission system

Where Stack Emission Monitoring Is Required

- Thermal power plants

- Cement manufacturing units

- Steel & iron industries

- Fertilizer and chemical plants

- Petrochemical refineries

- Paper and pulp industries

- Waste-to-energy plants

- Boilers and incinerators

Stack Emission Monitoring Compliance in India

Mandatory by Law

As per Central Pollution Control Board (CPCB) norms, specific industries must install and operate online continuous stack emission monitoring systems (CSEMS) and transmit data to CPCB/SPCB servers in real-time.

Data Submission

- Data must be live, tamper-proof, and remote accessible

- Must follow prescribed pollutant limits and emission thresholds

Best Practices for Stack Emission Monitoring

- Calibrate analyzers periodically for accuracy

- Ensure proper placement and installation of sampling probes

- Maintain clean sample lines to prevent blockage or condensation

- Regularly audit data logging and reporting software

- Use high-quality filters and dehumidifiers in high-moisture applications

Aaxis Nano’s Solutions for Stack Emission Monitoring

At Aaxis Nano, we provide end-to-end stack emission monitoring solutions, from system design and supply to installation, calibration, and data management. Our systems support real-time compliance monitoring, help generate automated reports, and come integrated with alarm triggers for threshold breaches.

We offer:

- Advanced CEMS Systems

- Multi-Gas Analyzers

- Customizable stack monitoring units

- Annual Maintenance Contracts (AMC)

- Remote Data Access & Reporting Platforms

Conclusion: Why Choose Aaxis Nano

If you’re searching for stack emission monitoring systems, CPCB-approved stack gas analyzers, or real-time air emission tracking, Aaxis Nano delivers high-quality, compliant, and scalable solutions for diverse industrial needs. From gases and particulates to flow and data reporting, our expertise ensures you’re always aligned with environmental regulations.