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Monitoring solutions

Dust & Opacity Monitoring

Continuous dust and particulate monitoring for stacks and ducts – in-situ laser back-scatter, extractive forward-scatter for wet flue gas, and total particulate flow measurement.

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Overview

Particulate matter is one of the most closely watched emissions from industrial stacks. GPIPL dust monitors measure dust concentration continuously and send the data to your DCS and CEMS data system.

The right principle for your stack

In-situ laser back-scatter monitors install from one side of the duct with no optical alignment and suit most dry stacks. Extractive forward-scatter monitors with heat-traced, isokinetic sampling are designed for low-temperature, high-humidity flue gas – for example after wet desulphurisation – and for ultra-low emission levels.

Built for continuous operation

Automatic zero and span checks, temperature compensation, air-curtain optics protection and automatic blowback keep readings reliable with minimum maintenance.

What is included

  • In-situ laser back-scatter dust monitors
  • Extractive dust monitors for wet / low-temperature flue gas
  • Ultra-low range dust monitoring
  • Total particulate flow (TPF) monitoring
  • 4–20 mA / RS485 integration with DCS and CEMS
  • Installation, calibration and AMC

Related products

5 products

  • Dust & Particulate Monitoring

    Dust Monitor (Extractive) Z-44i Ein

    Model Z-44i Ein

    Z-44i Ein extractive laser forward-scattering dust monitor with heat-traced sampling, built for ultra-low dust emission monitoring in low-temperature, high-humidity flue gas.

  • Dust & Particulate Monitoring

    Dust Monitoring System (CEMS)

    Ultra-low-range forward-scattering dust monitor for stacks, with heat-traced isokinetic sampling, air-curtain lens protection, automatic blowback and dual-range switching.

  • Dust & Particulate Monitoring

    Light Scattering Digital Smoke Tester

    Laser back-scattering smoke and dust tester for continuous online monitoring of dust concentration at gas pollution sources, installed from one side of the duct with no optical alignment.

  • Dust & Particulate Monitoring

    Stack Total Particulate Flow (TPF) Monitoring System

    Model Z-23Ein

    Z-23Ein stack total particulate flow (TPF) monitoring system for continuous, real-time particulate emission monitoring, with 4–20 mA, RS-485 Modbus RTU and optional Ethernet.

Industries

  • Power Generation

    Environmental monitoring requirements in power generation applications can include emission measurement, air quality monitoring and related monitoring systems.

  • Cement

    Monitoring for cement kilns and grinding units – stack gas emissions, dust, mercury and process gas, built for hot, dusty and moist conditions.

  • Steel

    Emission and process monitoring for steel plants and metal processing – stack gases, dust, greenhouse gases and heavy metals.

  • Waste Incineration

    Monitoring for municipal, hazardous and medical waste incinerators – HCl, HF, NH₃, mercury, heavy metals and multi-gas FTIR analysis.

Frequently asked questions

Which dust monitor suits wet flue gas?

Extractive monitors with heated, isokinetic sampling are designed for low-temperature, high-humidity flue gas where in-situ monitors are affected by water droplets.

Does installation need optical alignment?

In-situ back-scatter monitors are single-ended, so they install from one side of the stack without alignment.

Can the dust monitor connect to our CEMS?

Yes, through analog 4–20 mA and RS485 / Modbus outputs.

Other monitoring solutions

  • Ambient Air Quality Monitoring

    Continuous ambient air quality monitoring stations and analyzers for SO₂, NOx, O₃, NH₃, particulates and VOCs – from single analyzers to complete CAAQMS and micro-monitoring networks.

  • Continuous Emission Monitoring System (CEMS)

    Continuous Emission Monitoring Systems (CEMS) for continuous measurement and monitoring of industrial emissions, supporting reliable environmental compliance and process monitoring.

  • Continuous Emission Monitoring Systems (CEMS)

    Complete, compliance-ready CEMS for industrial stacks – gas analyzers, dust monitors, flow measurement, sampling and data acquisition, designed, manufactured, installed and supported by GPIPL.

  • Environmental Data Acquisition (DAS)

    Data acquisition systems that collect, store and transmit data from analyzers, dust monitors and flow monitors – the backbone of every CEMS and CAAQMS.

  • Industrial Gas Analysis

    Online, portable and FTIR gas analyzers for flue gas, process gas and emission monitoring – TDLAS, DOAS, UV-DOAS, FTIR, chemiluminescence and UV fluorescence technologies.

  • Mercury & Heavy Metal Monitoring

    Continuous monitoring of mercury and heavy metals in flue gas – dilution-type mercury CEMS using cold atomic fluorescence, and online heavy metal monitoring systems.

  • Process & Field Instrumentation

    Temperature, humidity, pressure, flow, level and portable test instruments for process monitoring, utilities, clean rooms and maintenance teams.

  • VOC Monitoring

    Online monitoring of volatile organic compounds and odour gases – GC-based VOC analyzers, VOC CEMS and UV-DOAS odour analyzers for stacks, fence lines and ambient air.

  • Water Quality Monitoring

    Online water quality monitoring for industrial water and effluent – starting with online pH analyzers and transmitters, with installation, calibration and maintenance.

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