Advanced Opacity Monitors for Accurate Emissions Control

Delivering reliable opacity monitoring solutions for compliance, safety, and performance in industrial stack emission applications.

Overview

Opacity monitoring systems are essential tools for industries required to measure the visual density of smoke and particulate emissions from stacks. These systems help determine compliance with air quality regulations by quantifying the opacity level—how much light is blocked by the emission stream. They play a crucial role in pollution control strategies by ensuring real-time visibility into emission trends, process conditions, and equipment performance.

Designed for continuous and unattended operation in harsh industrial environments, modern opacity monitors utilize advanced optical technology, self-calibration, and remote diagnostics. These features reduce manual intervention while increasing reliability and regulatory compliance.

Emissions and Stack, a B2B leader serving clients across North America, offers scalable, high-performance opacity monitoring solutions tailored to your specific process and regulatory needs. Backed by our deep technical expertise, commitment to quality, and responsive customer service, we help you achieve accurate emission control with confidence.

Instruments, Systems & Technologies for Opacity Monitoring

In addition to offering products and systems developed by our team and trusted partners for opacity monitors, we are proud to carry top-tier technologies from Global Advanced Operations Tek Inc. (GAO Tek Inc.) and Global Advanced Operations RFID Inc. (GAO RFID Inc.). These reliable, high-quality products and systems enhance our ability to deliver comprehensive technologies, integrations, and services you can trust. Where relevant, we have provided direct links to select products and systems from GAO Tek Inc. and GAO RFID Inc.

Core Components: Hardware, Software & Cloud Services

Hardware Components

  • Optical Transceivers and Retroreflectors
  • Alignment Targets and Mounting Assemblies
  • Stack Accessories for Harsh Environment Operation
  • Automatic Zero and Span Check Modules
  • Weatherproof and Temperature-Controlled Enclosures

Software

  • Real-Time Opacity and Calibration Monitoring
  • Built-In Alarm Configuration and Diagnostic Reporting
  • Configurable Compliance Reports
  • Secure User Access and Audit Logs

Cloud & IoT Services

  • Remote Data Access and Storage
  • Multi-Site Monitoring Dashboards
  • Mobile Alerts and System Health Notifications
  • Integration with Existing DAS or SCADA Systems
Stacked wooden blocks with checkmarks beside colorful feature labels

Key Features and Functionalities

  • Continuous and Real-Time Monitoring of opacity in stack emissions
  • Automatic Calibration Checks using zero and span reference filters
  • Fail-Safe Design with system health indicators and built-in diagnostics
  • Non-Intrusive Optical Technology that does not interfere with stack flow
  • High Accuracy and Repeatability even under varying temperature and humidity
  • Compliance Reporting Tools aligned with regulatory formats
  • Minimal Maintenance Requirements through self-cleaning optics and rugged design

Integrations and Compatibility

  • Easily integrates with Continuous Emissions Monitoring Systems (CEMS)
  • Supports industry-standard protocols like Modbus, OPC, and Ethernet/IP
  • Compatible with plant DCS, SCADA, and cloud-based platforms
  • Allows data sharing across environmental compliance teams and corporate networks

Benefits of Working with Emissions and Stack

  • Improved environmental compliance with real-time emission visibility
  • Reduced manual inspections and regulatory penalties
  • Custom-configured systems designed for specific industry needs
  • Fast deployment, expert support, and training included
  • Trusted by leading facilities in cement, utilities, energy, and more
  • Scalable for multi-stack or facility-wide monitoring

Applications

  • Fossil Fuel Power Plants
  • Cement and Lime Kilns
  • Steel and Aluminum Production
  • Waste-to-Energy Facilities
  • Pulp and Paper Manufacturing
  • Chemical and Petrochemical Refineries

Industries Served

  • Energy and Utilities
  • Heavy Manufacturing
  • Waste Management
  • Pulp & Paper
  • Cement and Construction
  • Metals and Mining

Relevant U.S. & Canadian Industry Standards

  • U.S. EPA 40 CFR Part 60, Appendix A (Method 9 & Method 203)
  • U.S. EPA 40 CFR Part 75 (Acid Rain Program)
  • ASTM D6216 for Opacity Monitoring Systems
  • Ontario Regulation 419/05 (Ontario Air Quality Standards)

Case Studies

Energy Utility – Pennsylvania, USA

A large coal-fired power station in Illinois required an upgrade to its emissions monitoring system to meet evolving EPA regulations. Emission and Stack Instruments supplied UV fluorescence SO₂ analyzers, which were integrated with their SCADA system. The upgrade reduced their environmental reporting errors by over 40% and allowed for better response to emission spikes.

Waste Incineration Facility – Florida, USA

A Houston-based refinery implemented our analyzers to detect SO₂ emissions in real time. We provided a complete system with auto-calibration and cloud monitoring capabilities. The result was improved regulatory reporting and a 30% reduction in downtime caused by SO₂ threshold exceedance.

Cement Manufacturer – Alberta, Canada

A municipal waste-to-energy plant sought a solution for continuous SO₂ emissions tracking. Working with Emission and Stack Instruments, the facility deployed our analyzers across multiple stacks. Integration with their environmental dashboard enabled instant alerts, contributing to 100% compliance in their latest CEPA audit.

Need an Opacity Monitoring Solution Tailored to your Industry & Compliance Goals?

Contact Emissions and Stack today. Our experienced team is ready to help you find the right opacity monitoring system, answer technical questions, and provide dedicated support from consultation to implementation.

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