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Gas Analyzers

Continuous Emissions Monitoring (CEM)
Continuous Stack Emissions Monitoring

Aluminium Smelters

The monitoring solution we provide in aluminium smelters is based on either DOAS or laser diode technique. The on-line, open-path systems are used for monitoring HF and sulphur dioxide in potrooms, in fence-line applications and in continuous emissions monitoring.

Gas Parameters

  •     Hydrogen fluoride (HF)
  •     Sulphur dioxide (SO2)
  •     Nitrogen dioxide (NO2)
  •     Water vapour (H2O
  •     Hydrocarbons
  •     Non-Hydrocarbons

Measuring Technique
 

Opsis offers two different open-path methods. One is based on the DOAS technique that has the benefit of being able to monitor multiple gases such as HF, sulphur dioxide (SO2), nitrogen dioxide (NO2) and water vapour (H2O). The other method is based on tuneable diode laser (TDL). Both types of systems can monitor several pot rooms or stack/ducts using one analyser. Additional parameters can be monitored.

Major Benefits

  •     Automatic alignment
  •     Multi-gas and multi-path system
  •     Withstands the aggressive environment
  •     Monitoring along the entire potroom with one system
  •     Combines the benefits of UV, FTIR and TDL technology
  •     No sample required
  •     The working environment can be controlled
  •     The multi-path capability offers cost-effective solutions for monitoring several pot rooms and/or sections in the smelter
  •     No sensitive electronic equipment, that might be exposed to high electro-magnetic fields
  •     Operates with a minimum of maintenance
  •     Easily calibrated
  •     Comprehensive after-sales support
  •     Approved according to EN15267

 

Cement Industry

We provide state-of-the-art monitoring equipment, fully meeting the high standards of monitoring performance and reliability that the cement industry requires. The systems are designed to withstand environments with high particulate levels and high temperatures.

Gas Parameters

  • Hydrogen chloride (HCl), 
  • Hydrogen fluoride (HF),
  • Benzene, 
  • Nitric oxide (NO), 
  • Nitrogen dioxide (NO2), 
  • Sulphur dioxide (SO2),
  •  Carbon dioxide (CO2), 
  • Ammonia (NH3), 
  • Water vapour (H2O), 
  • Mercury (Hg), 
  • Temperature, Oxygen (O2),
  •  VOC (THC).

Major Benefits

  •    Fully meeting the EC requirements
  •     High-performance, in situ monitoring
  •     Multi-gas and multi-path system
  •     Combines the benefits of both UV, FTIR and TDL technology
  •     Withstands aggressive environment with high levels of particulates and gases
  •     No sample required
  •     Operates with a minimum of maintenance
  •     Remote service functions are available
  •     Easily calibrated
  •     Serviced by highly skilled service network
  •     Approved according to EN15267
  •     Internationally approved

 

 

  Chemical Industry

Our gas monitoring system is designed for monitoring in stacks and gas ducts in chemical industries, both in order to increase plant efficiency and to monitor emissions.

Gas Parameters

  •     NOx
  •     Carbon dioxide (CO2)
  •     Sulphur dioxide (SO2)
  •     Water vapour (H2O)
  •     Phenol
  •     Formaldehyde
  •     Mercury (Hg)
  •     Styrene and other hydrocarbons
  •     Chlorine
  •     Chlorine dioxide
  •     Ozone
  •     Carbon disulphide


Major Benefits

  •     High-performance, in situ monitoring
  •     Multi-gas and multi-path system
  •     Combines the benefits of both UV, FTIR and TDL technology
  •     Withstands aggressive environment with high levels of particulates and gases
  •     No sample required
  •     Operates with a minimum of maintenance
  •     Easily calibrated
  •     Serviced by highly skilled service network
  •     Approved according to EN15267

 

 

Fertilizer Industry

The versatile DOAS system provides comprehensive emissions monitoring and process control in the fertilizer industry.

Gas Parameters

  •     Ammonia (NH3)
  •     Nitrogen oxides NOx
  •     Carbon dioxide (CO2)
  •     Sulphur dioxide (SO2) 
  •     Water vapour (H2O)
  •     Hydrogen Fluoride (HF)
  •     Major Benefits

                                                     

 

 

Marine Monitoring

SO2 Scrubber Control on Sea Vessels

Process control of a SO2 scrubber on a ship is a challenge due to wet and corrosive gases. In such environment, extractive gas sampling systems require high levels of maintenance in order to operate correctly.Our monitoring system solves this by using an optical, non-contact, cross-duct technique. A light beam is sent across the duct or stack to be measured, and the captured light is sent through an optical fibre cable to an analyser. The analyser measures SO2 and CO2 concentrations using UV and IR absorption, approved reference methods.The sulphur content in the bunker oil is measured based on the SO2/CO2 ratio, where the ratio has to stay below 4.3, which is equivalent to 0.1% (vol.) sulphur content. One analyser can be connected to several measurement paths using an optical multiplexer, making a cost effective solution for up to 12 monitoring points.
 

Mineral Wool Production

Our cross-stack monitoring systems are successfully used for emissions monitoring in mineral wool plants.

Gas Parameters

The major pollutants are
 

  •     Phenol (C6H5OH)
  •     Formaldehyde (HCHO)
  •     Ammonia (NH3)
  •     Particulates
  •     Sulphur dioxide (SO2)
  •     Tar (PAH)
  •     Nitric oxide (NO)
  •     Nitrogen dioxide (NO2)
  •     Carbon dioxide (CO2)
  •     Water vapour (H2O)
     

Major Benefits

  •     Can monitor phenol, formaldehyde and NH3
  •     High-performance, cross-stack monitoring
  •     No sample lines required
  •     Multi-gas and multi-path system
  •     Combines the benefits of both UV and FTIR technologies
  •     High-quality instruments for operation in harsh environment
  •     Operates with a minimum of maintenance
  •     Easily calibrated
  •     Fast response
  •     Serviced by highly skilled service network
  •     Approved according to EN15267
  •     International Approvals

 

Mining & Smelting

The monitoring solution for mining and smelting applications is based on either DOAS or laser diode technique. Our non-contact monitoring solutions are very well suited for applications in the Mining and Smelting Industries, as the flue gas conditions often involves high temperatures and high dust concentrations. The on-line, open-path systems are used for monitoring HF, sulphur dioxide, SO3 and HCl in potrooms, in fence-line applications and in continuous emissions monitoring.

Gas Parameters

  • Hydrogen fluoride (HF)
  • Sulphur dioxide (SO2)
  • Nitrogen dioxide (NO2)
  • Water vapour (H2O)
  • Hydrocarbons
  • Non-Hydrocarbons

Measuring Technique

We offer two different open-path methods. One is based on the DOAS technique that has the benefit of being able to monitor multiple gases such as HF, sulphur dioxide (SO2), nitrogen dioxide (NO2) and water vapour (H2O). The other method is based on tuneable diode laser (TDL). Both types of systems can monitor several pot rooms or stack/ducts using one analyser. Additional parameters can be monitored.

Major Benefits

  •     Automatic alignment
  •     Multi-gas and multi-path system
  •     Withstands the aggressive environment
  •     Monitoring along the entire potroom with one system
  •     Combines the benefits of UV, FTIR and TDL technology
  •     No sample required
  •     The working environment can be controlled
  •     The multi-path capability offers cost-effective solutions for monitoring several pot rooms and/or sections in the smelter
  •     No sensitive electronic equipment, that might be exposed to high electro-magnetic fields
  •     Operates with a minimum of maintenance
  •     Easily calibrated
  •     Comprehensive after-sales support
  •     Approved according to EN15267

 

Power Plants

Continuous Emissions Monitoring in Power Plants

Opsis offers fully automated system solutions for continuous emissions monitoring in power plants.

The monitoring systems have international approvals.

Major Benefits

  •     High-performance, cross-stack monitoring
  •     Multi-gas and multi-path system
  •     Combines the benefits of UV, FTIR and TDL technology
  •     No sample required
  •     High-quality instruments for operation in harsh environment
  •     Operates with  minimum  maintenance
  •     Easily calibrated
  •     Internationally approved
  •     Complies with U.S. EPA Acid Rain regulations
  •     Serviced by highly skilled service network
  •     Approved according to EN15267

 

 

Steel Mills

Steel mills include a multitude of activities that generate gaseous emissions. Besides continuous emissions stack monitoring, the applications in a steel mill also include process measurements that provides important data to the operators in order to optimize the steel making process.

Gas Parameters

  • Hydrogen chloride (HCl)
  • Hydrogen fluoride (HF)
  • Nitric oxide (NO)
  • Nitrogen dioxide (NO2)
  • Sulphur dioxide (SO2)
  • Carbon monoxide (CO)
  • Carbon dioxide (CO2)
  • Ammonia (NH3)
  • Water vapour (H2O)
  • Temperature
  • Oxygen (O2)
  • Methane (CH4)
  • VOC

Major Benefits

  • High-performance, cross-stack monitoring
  • Multi-gas and multi-path system
  • Not affected by high temperature or high dust concentrations
  • Designed for withstanding the corrosive environment
  • Combines the benefits of UV, FTIR and TDL technology
  • Can be installed in explosive areas
  • Low detection limits
  • Fast response time
  • Operates with minimum  maintenance
  • Easily calibrated
  • AQM and fence-line monitoring capabilities
  • Serviced by highly skilled service network
  • Internationally approved
  • Approved according to EN15267


Sulphuric Acid Production


We offer a complete system packages for on-line measurements in sulphuric acid plants. A system may be used in order to increase plant efficiency as well as monitoring the emissions.       

Gas Parameters

  • SO2
  • H2O
  • SO3
  • NOx
  • CO2

Major Benefits

  •     High-performance, cross-stack monitoring
  •     Can withstand the corrosive environment
  •     No sample lines required
  •     Combines the benefits of UV, FTIR and TDL technology
  •     Can measure SO3
  •     Multi-gas and multi-path system
  •     Fast response
  •     Operates with minimum maintenance
  •     Easily calibrated
  •     Comprehensive after-sales support
  •     Approved according to EN15267

 

                                                               

 


Waste to Energy Plants 

The in situ system is designed to meet the requirements for monitoring stack emissions and for process control purposes in waste incinerators.

Gas Parameters 

  • Hydrogen chloride (HCl), 
  • Hydrogen fluoride (HF),
  • Nitric oxide (NO),
  • Nitrogen dioxide (NO2),
  • Sulphur dioxide (SO2),
  • Carbon dioxide (CO2),
  • Ammonia (NH3),
  • Water vapour (H2O),
  • Mercury (Hg),
  • Temperature,
  • Oxygen (O2),
  • THC,
  • VOC.

Major Benefits

  • High-performance, cross-stack monitoring
  • Multi-gas and multi-path system
  • Not affected by high temperature or high dust concentrations
  • Designed for withstanding the corrosive environment
  • Combines the benefits of UV, FTIR and TDL technology
  • Low detection limits
  • Fast response
  • Operates with a minimum of maintenance
  • Easily calibrated
  • Serviced by highly skilled service network
  • Internationally approved
  • Approved according to EN15267

 

 

 

 




 

 

 


Features

  • Multi-gas and multi-path system
  • Combines the benefits of DOAS, UV, FTIR and TDL technology
  • Remote service functions are available
  • Opsis offers complete software packages for data handling
  • Approved according to EN15267
Benefits

  • Easy calibration
  • Operates with a minimum of maintenance
  • No sample required
  • Works well in Rugged environments with high levels of particulates and gases
  • High-performance, in situ monitoring