• SRU – Analyzers
  • Natural Gas Analyzers
  • Liquid Analyses
  • Combustion Analyzers
  • AQMS
  • Lab Analyzers
  • Emission Monitoring
  • Optical Gas Analyzers
  • Water content determination Litronic WMS II

SRU – Analyzers

SRU – Analyzers

Sulfur recovery is the process of conversion of hydrogen sulfide (H2S) to elemental sulfur. Hydrogen sulfide is a byproduct of processing natural gas and refining high-sulfur crude oils. The most common conversion method used is the Claus process.

The claus sulfur recovery unit (SRU) and tail gas treating unit (TGTU) require a set of process gas analyzers to ensure safe operation, high efficiency, and meet environmental regulations. Tail gas analysis of hydrogen sulfide (H2S) and sulfur dioxide (SO2) is a critical measurement used by every SRU. Feed gas analysis is also becoming more prevalent to mitigate hydrocarbon upsets and quantify acid gas contaminants.

With extensive experience in the sulfur recovery process, AIMS provides high-quality analytical solutions across the SRU and TGTU, delivering the measurements needed to ensure efficient sulfur recovery operations

SRU Analyzers:

  • Feed forward Analyzer For SRU feed forward control, a full-composition, real-time analyzer is required for measuring all oxygen-consuming species in acid gas streams. This allows the exact amount of air to be added or removed from the reaction furnace for steady state control.
  • Tail gas air demand Analyzer Measuring H2S and SO2 in the SRU tail gas supports feedback control (trim air control) of the air to acid gas ratio. It is the primary online analytical measurement used in the Claus sulfur recovery process.
  • Sulfur pit monitoring Analyzer In many SRUs, sulfur is stored in liquid form in sulfur pits, presenting a potential danger to personnel and plant safety. Monitoring H2S in the vapor space of these pits is of critical importance.
  • Tail gas treating unit (TGTU) Analyzer
    In the TGTU, it is important to measure hydrogen (H2) at the outlet of the reduction reactor, as well as the SO2 at the inlet of the quench tower.

Natural Gas Analyzers

Natural Gas Analyzers

Natural gas plays an important role in the world’s energy supply. Natural gas needs to meet specific standards in relation to heating value, hydrocarbon dew point, and concentration of contaminants. Contamination can significantly affect the quality of natural gas.

Contaminants of natural gas include water vapor, sulfur-based compounds, heavy hydrocarbons and carbon dioxide. These can affect gas quality, damage pipelines and equipment, and cause unplanned downtime.

With extensive experience and continuous product development with our manufacturers, AIMS provides a comprehensive portfolio of specialized solutions, utilizing very advanced technologies to provide vital analysis across the full range of natural gas processes. From drilling to gas processing and transmission to the production of liquefied natural gas (LNG), our process instrumentation ensures natural gas meets quality specifications and requirements for gas treating, processing, transmission, and end use as a fuel or feedstock.

Natural Gas analyzers

  • Moisture Analyzer
  • Hydrogen sulfide content in the gas
  • Hydrocarbon dew point temperature
  • Heating value of the gas
  • Online Gas chromatograph
  • Gas Gravitometers Portable

Liquid Analyses

Liquid Analysis

Liquid analysis is becoming increasingly essential due to environmental protection, consistent product quality, process optimization and safety. Liquids such as water, chemicals, pharmaceuticals, beverages, dairy products & sewage water have to be analyzed day in and day out. With extensive knowledge, expertise and partnership with quality manufacturers, we support you in fulfilling all these measuring requirements with application know-how and innovative technologies.

Liquid analyzers & parameters;
Oil in water, pH, Conductivity, Dissolved Oxygen, ORP, Turbidity, Chlorine, Silica, Phosphate, Sodium, Ammonia, Salinity,

Liquid analyzer accessories

  • Sample handling system
  • Steam and water analysis system (SWAS) skids
  • Auto Cleaning system
  • Sensor retraction assembly


Combustion Analyzers

Combustion Analyzers

Efficient ignition, flame monitoring & monitoring of oxygen, carbon monoxide and sulphuric acid dewpoint can help improve combustion efficiency, lower energy use, reduce emissions and prevent plant corrosion. With our expertise, we offer precision measurements for these applications by different technologies.


Duiker Combustion Engineers

Duiker Combustion Engineers is an engineering company specialized in process combustion solutions. With a rich history in fired equipment dating back to 1919, Duiker has developed to becoming a highly specialised world leader in combustion equipment for the Sulphur Recovery Unit (SRU). Since the installation of the first Luynet Multiple Vortex (LMV) Burners at Shell Godorf and Haven in 1961, Duiker rapidly established a sound track record in the global oil and gas industry.


DURAG flame monitoring

D-LX 110/710


Easy, versatile and flexible compact flame monitor with integrated UV, VIS or IR flame sensor for monitoring gas, oil and coal flames. Particularly for applications with single burner view

DURAG high energy igniters


Forced draft operated gas ignition and pilot burner with nozzle mixing device in compact, modular design for plant-specific solutions and fuel flexibility.

Functionality: Compact design, integrated ionization electrode and ionization flame monitor, integrated ignition electrode and high voltage spark transformer/high energy ignition unit, integrable burner control, fuel-specific gas nozzles, optimized fuel/air mixture and effective flame stabilization at the tube tip.

DURAG burner controls


Self-monitoring and fail-safe burner controls for controlling simple gas burners with electric ignition.

Functionality: Safety-related control


Combustion flue gas analyzers

Combustion analyzers are multifunction instruments designed to calculate the efficiency of all types of boilers, heaters and furnaces by measuring a range of parameters such as stack temperature, flue pressure and levels of gases.

A flue gas analyzer is designed to provide accurate measurements of oxygen (O2), CO, combustibles (CO+H2) and methane (CH4) for process control and safety in combustion applications.

We offer analyzers with safe, reliable operation, coupled with latest technology and hazardous zone suitability.


SRU pyrometer

With an explosion proof housing the infrared thermometer (pyrometer) is intended for monitoring the Refractory and Gas temperatures inside Sulfur Recovery Units, Sulfur burner furnaces, and Thermal oxidizer furnaces frequently found at these facilities.


Flare monitor


Infrared camera system for continuous pilot flame and flare stack monitoring in hazardous areas.

FlareSpectionTM system is a complete flare monitoring solution. This thermal imaging system can monitor both the flare and the pilot light continuously, through adverse weather and environmental conditions, around the clock. Our unique optics, enclosures, and calibrations focus on critical combustion regions—even through moisture, heavy rain, fog, dust, or smoke. Our best-in-class optics offer higher resolution at longer distances, allowing for camera mounting in convenient locations and enabling installation and maintenance while the flare is still in service. The camera system is ATEX certified for use in the harshest locations and easily integrates into your existing DCS and/or re-ignition system



Air Quality Management System (AQMS) refers to all the activities a regulatory authority undertakes to help protect human health and the environment from the harmful effects of air pollution. The quality of air to which we are exposed needs to be constantly evaluated in order to identify various sources of pollution as well as to control the level of exposure to these pollutants and to adopt the appropriate corrective measures according to the regulations provided.

At AIMS, our experts will help you access accurate and up-to-date information to manage air quality issues. This will protect you and your employees and ensure compliance with relevant regulations. With our team of experts and engineers, backed by state-of-the-art equipment and risk assessment techniques, we are able to evaluate problems accurately and to engineer solution to complex environmental issues ultimately enabling your business to profit from the benefits of pro-actively managing air quality.

At AIMS, we create solutions that advance environmental protection for the safety and comfort of workers in commercial and industrial areas. We provide:


  • Range of Integrated Solutions
  • Complete stationary and mobile monitoring stations
  • Operation, Maintenance and Service contracts
  • Data logging and processing systems
  • Data acquisition, validation and reporting software

Installation methods to suit various environment

  • Fixed and Portable AQMS housing
  • Shelters, cabinet and wall mounted systems
  • Instrument racks and sampling systems


  • Air pollutant analyzers
  • Dust monitors
  • Meteorological instrument
  • VOCs and other gases
  • Calibration equipment

Flexible work scope as per client’s requirement

  • Turnkey projects
  • Stand-alone system
  • Upgrade or enhancement of existing system
  • QA/QC services in environmental monitoring and auditing
  • Onsite services for preventive and corrective maintenance, calibration, data processing and reporting.


  • Indoor Air Quality (IAQ) monitoring
  • Odor monitoring
  • Noise, vibration and odor monitoring and reporting

Lab Analyzers

Lab Analyzers

PCS Instruments

PCS Instruments design and manufacture laboratory instruments for testing fuels and lubricants. We have a worldwide client base of users performing to ISO, ASTM and CEC test procedures as well as specialised research in the field of tribology.


A ball-on-plate reciprocating friction and wear test system, assessing the performance of both fuels and lubricants under boundary conditions.

HFRR – High Frequency Reciprocating Rig.


A fully automated, Ball-on-Cylinder wear test system which provides a fast, repeatable assessment of the lubricity of aviation fuels.

ABS – Automated BOCLE System


Da Vinci Laboratory Solutions

Da Vinci Laboratory Solutions is a versatile partner for laboratories and offers chromatography solutions for all analytical challenges.

DVLS Chromatographic Analyzers

DVLS Chromatographic Analyzers

Da Vinci Laboratory Solutions offers a full range of chromatography solutions based on the Agilent GC or LC that comply with custom or the standardized methods such as ASTM, DIN, EN, IP, ISO, GPA and UOP.

DVLS Chromatographic Systems


Sulphur Experts

Sulphur Experts have developed numerous proprietary analytical techniques for assessing, troubleshooting and optimizing amine, dehydration, and sulphur units. Their commitment to producing accurate on-site analyses has permitted us to assemble an immense database of facility operations. Using the gas and liquids analyses, we determine the process performance and make recommendations for better operability, safety, reliability, and unit efficiency.

Oxygen Analyzer

The correct and safe start-up and shutdown of the SRU can be a challenging task. When we provide this as an on-site service to our clients, we use oxygen analyzers to monitor the process. The oxygen analyzers can also be used for measuring oxygen in the process gas downstream of a direct-fired reheater in the SRU or TGU for example. An improperly tuned reheater can allow free oxygen onto the catalyst, deactivating it over time.

Oxygen Analyzer


Our H2S in Liquid Sulphur Analyser is specifically designed for the measurement of H2S and H2Sx dissolved in liquid sulphur. This analyser is used extensively throughout the industry to establish the amount of total H2S in raw product sulphur and the effectiveness of sulphur degassing systems.


Emission Monitoring

Emission Monitoring


Continuous Emission Monitoring System (CEMS) is the total equipment necessary for the determination of a gas or particulate matter concentration or emission rate using pollutant analyzer measurements and a conversion equation, graph, or computer program to produce results in units of the applicable emission limitation or standard.

CEMS are required under some of the EPA regulations for either continual compliance determinations or determination of exceedances of the standards. The individual subparts of the EPA rules specify the reference methods that are used to substantiate the accuracy and precision of the CEMS.

In collaboration with our renowned manufacturers, AIMS has provided CEMS systems to many different industries in the region.



Predictive Emission Monitoring System (PEMS) is the total equipment necessary for the determination of a gas concentration or emission rate using process or control device operating parameter measurements and a conversion equation, a graph, or computer program to produce results in units of the applicable emission limitation or standard.

Software-based PEMS is used for continuous real-time monitoring of pollutants such as NOX, SO2, CO, HC or reference variables such as O2.

PEMS is an innovative and cost-effective approach to continuous monitoring of emission sources as an alternative to continuous emissions monitoring systems (CEMS).

Functionality: PEMS cannot measure emissions directly and instead uses an empirical model to predict emissions based on historical and real-time process data.

Together with our principal DURAG Data Systems AIMS has installed PEMS in ADNOC Gas Processing in UAE.



Relative Accuracy Test Audits (RATA) compares data from a facility’s Continuous Emissions Monitor System (CEMS) to a simultaneously collected reference method test data in order to assess the accuracy of the CEMS readings.

AIMS provides comprehensive services to our clients to ensure that they are meeting the requirements of EPA including:

  • Preparing Quality Assurance/Quality Control Manuals;
  • Managing a facility’s performance evaluation requirements to ensure that quarterly, semi-annual and annual evaluations are scheduled and conducted to meet the requirements of EPA
  • Conducting Relative Accuracy Test Audits, Flow Audits and Cylinder Gas Audits
  • Conducting Annual Independent Inspections to ensure that the facility is meeting quality assurance objectives and identifying areas of improvement
  • Conducting on-site training to ensure facility personnel understand the requirements of EPA and the importance of the Quality Assurance/Quality Control Manual
  • Technical support to aid the facility/industry in interpreting EPA Report and understanding how it applies to their facility.


Optical Gas Analyzers

Optical Gas Analyzers

Optical Analyzers :

AIMS manufacture optical spectrum analyzers, delivering high quality, cutting edge technology with dependability, performance, and flexibility. We offer robust and reliable optical composition and analysis products for laboratory, process, and manufacturing environments. Our instruments are powered by Raman & TDLAS technology to promote safety, optimize process efficiency, and ensure quality.

Water content determination Litronic WMS II

Water content determination Litronic WMS II

Liebherr sensors in use in explosive areas

The Liebherr Litronic WMS II water content meter is used to measure the moisture or water content of a wide range of water content of a wide variety of media and materials in refineries, on oil platforms, in pipelines, in tanks, in many applications in the chemical and petrochemical industry, sludge dewatering, drying, waste incineration and sewage treatment plants. Also in the agricultural sector up to the pharmaceutical industry and many other industries.

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