Online Continuous Emission Monitoring System (OCEMS)
An Online Continuous Emission Monitoring System (OCEMS) is an advanced environmental monitoring solution designed to measure and record emissions from industrial stacks in real time. It continuously monitors pollutants such as Particulate Matter (PM), Sulphur Dioxide (SO₂), Nitrogen Oxides (NOx), Carbon Monoxide (CO), and Oxygen (O₂) to ensure that emissions remain within permissible limits.
The system automatically collects, analyzes, and transmits emission data to regulatory authorities such as the Central Pollution Control Board (CPCB) and respective State Pollution Control Boards (SPCBs) as mandated under environmental regulations. Greenshield Enviro provides reliable OCEMS solutions that help industries maintain compliance, improve transparency, and manage emissions efficiently.
Specifications
- Parameters Monitored : PM, SO₂, NOx, CO, O₂, Stack Temperature, Stack Pressure, Gas Flow Rate
- Core Technology : Stack Sampling Probes, Gas Analyzers, PM Monitor, DAS, CPCB/SPCB Connectivity
- Key Functions : Continuous Monitoring, Automated Data Transmission, Smart Logging, Alerts, Remote Monitoring
- Applications : Power Plants, Cement Plants, Steel Units, Chemical Industries, Boilers, Furnaces, Incinerators
- Parameters Monitored : PM, SO₂, NOx, CO, O₂, Stack Temperature, Stack Pressure, Gas Flow Rate
- Core Technology : Stack Sampling Probes, Gas Analyzers, PM Monitor, DAS, CPCB/SPCB Connectivity
- Key Functions : Continuous Monitoring, Automated Data Transmission, Smart Logging, Alerts, Remote Monitoring
- Applications : Power Plants, Cement Plants, Steel Units, Chemical Industries, Boilers, Furnaces, Incinerators
Need a reliable OCEMS solution for compliance and monitoring?
Visual showcase of our OCEMS solutions




Real-Time Stack Emission Monitoring for Regulatory Compliance
OCEMS is designed to continuously measure and record emissions from industrial stacks in real time. It provides industries with a dependable way to monitor pollutants, maintain traceable records, and ensure compliance with environmental norms.
Industries operating boilers, furnaces, incinerators, or thermal processes must continuously monitor emissions to comply with environmental regulations. OCEMS supports automatic monitoring, emission tracking, and direct integration with regulatory servers for better transparency.
With real-time data collection, automated analysis, and reporting capability, OCEMS helps industries detect emission exceedances immediately, improve operational efficiency, and maintain sustainable and responsible operations.
Compliance assured. Emissions tracked. Operations made transparent.
Our OCEMS solutions help industries monitor stack emissions in real time, automatically transmit data to CPCB/SPCB servers, and reduce the risk of violations through accurate and continuous environmental tracking.
Engineered for precise emission measurement and regulatory integration
Emission Parameters
Measures PM, SO₂, NOx, CO, O₂, stack temperature, stack pressure, and gas flow rate.
System Components
Includes stack probes, gas conditioning systems, gas analyzers, PM monitor, and DAS.
Connectivity
Supports automated data transfer and connectivity with CPCB/SPCB regulatory servers.
Data Functions
Enables logging, compliance reporting, trend records, alarms, and remote monitoring access.
Step-by-step OCEMS workflow
Flue Gas Sampling
Flue gas from the industrial stack is sampled through specialized probes installed at designated monitoring points.
Gas Analysis
Analyzers measure pollutant concentrations using advanced sensing technologies for reliable readings.
Data Processing
Collected data is processed through a central control unit and converted into emission concentration values.
Data Transmission
Emission data is automatically transmitted to regulatory servers and stored for compliance reporting.
Continuous Monitoring
The system continuously tracks emission levels and alerts operators in case of abnormal readings.
Widely used across industries generating stack emissions
Power Plants
Supports continuous emission tracking for thermal and process-based power generation systems.
Cement Plants
Monitors stack emissions to help cement units maintain regulatory compliance and transparency.
Steel & Metal Industries
Tracks industrial pollutant levels from furnaces and heavy thermal process operations.
Chemical Manufacturing
Ensures continuous monitoring of emission parameters across chemical processing units.
Boilers & Furnaces
Helps industries operating boilers and furnaces continuously monitor stack emissions.
Waste Incineration Units
Provides real-time emission measurement for incineration facilities and environmental reporting.
Reliable, accurate, and compliance-ready emission monitoring
Continuous Real-Time Monitoring
Measures emission parameters from industrial stacks continuously without manual intervention.
Automated Data Transmission
Automatically sends emission data to CPCB/SPCB servers in line with regulatory requirements.
Accurate Sensor Technology
Uses advanced analyzers and sensors for high-accuracy and dependable measurement of pollutants.
Smart Data Logging
Records trends, operational data, and compliance logs for audits and performance tracking.
Alarm & Notification System
Generates alerts whenever emission levels exceed permissible limits or abnormal readings occur.
Remote Monitoring & Control
Allows operators to access centralized dashboards and monitor emissions from remote locations.
Built to improve compliance, transparency, and environmental efficiency
Regulatory Compliance
Helps industries comply with environmental emission standards and reporting requirements.
Environmental Management
Supports proactive monitoring and control for improved environmental responsibility.
Operational Transparency
Creates continuous and traceable emission records for greater transparency and reporting.
Risk of Violations
Reduces the risk of penalties, exceedances, and compliance-related disruptions.
Reliable monitoring support from installation to long-term operation
Compliance Data Integration
Supports connectivity requirements established by CPCB and State Pollution Control Boards.
Emission Record Management
Maintains continuous emission records for audits, reporting, and regulatory verification.
End-to-End Service Support
Includes system design, supply, installation, commissioning, calibration, AMC, and technical assistance.
Trusted by industries that require accurate emission compliance monitoring
“The OCEMS setup has improved our compliance reporting and made stack monitoring much more transparent and dependable.”
Environmental Compliance Manager
Power Plant“Automated data transmission and real-time alarms have helped our team respond much faster to abnormal emission conditions.”
Plant Operations Team
Chemical Manufacturing Unit“The system’s logging, dashboards, and CPCB connectivity have made environmental monitoring far easier to manage.”