Process Control and Optimization

Multi-species and TDL (Tuniable Diode Laser)

 At AQMS GROUP we offer a comprehensive range of process instrumentation, Some of the equipment is doubled up as CEMS and we’ll help you select the most suitable analyzer for your needs. Beyond emission monitoring, we consider various industrial applications where different technologies may be more economical or efficient. These include laser diode (TDL), infrared (IR), opacity, optical, or electrochemical analyzers. Once we determine the best technology for your application, we’ll ensure you get the most out of the instrument, whether it’s for dosing or process optimization.Power generation / combustion industry.

Our intelligent instruments are also designed for seamless interplay with the larger world of industrial automation and control systems – enabling greater process transparency and smarter decisions for your business.

• DeNOx

Surveillance and optimization of DeNOx plants by measuring the ammonia slip behind SCR and SNCR DeNOx installations.

• Thermal waste treatment:
  Primary combustion control by fast measurements of the oxygen concentration and the gas temperature in furnaces and boilers.
  Surveillance and optimization of flue gas cleaning systems by measuring the waste gas concentrations before and after gas cleaning steps.

• Internal combustion engines:
  Measuring the ammonia slip behind DeNOx catalysts in the waste gas system of engine test beds

• Explosion safety:
  Immediate and for the intrinsically safe (Ex – IECEx) concentration measurement in combustible gases like CO Process Control & Optimization

Possibilities for process control and emission monitoring

The gas analyser TDL consists of a central unit and up to three in situ optics housings. The connection between the central unit and the optics housing is established by a so-called hybrid cable, which contains optical fibres and copper wires. An additional cable connects the transmitter and receiver parts of the cross-duct optics housing. A major part of the benefits the in situ approach is introducing belongs to the simple fact that the measurement is performed non-intrusively and in real-time – without any disturbance or delay due to gas sampling or gas conditioning.

• and CH₄ as well as for the surveillance of the oxygen level in process streams, tanks, or silos.
• Corrosion protection:
  Fast and non-intrusive surveillance of moisture in corrosive gas mixtures.

At a glance

Single or Multi-species infrared absorption analyser

In-situ stainless steel probe measurement.

CO, NO, NO2, NOx, SO2, CH4, HCI, CO2 & H2O

Gas temperature and pressure sensors, on-board normalisation

Export of data to SCADA, DCS and Data Acquisition System

Analogue & serial digital output

Certified to EN15267

 Your benefits

• • Measured values in real time without altering the gas composition
  • Short-term process deviations are detected
  • Fast on-site service due to modular design
  • Long maintenance-free intervals
  • Cost-effective in-situ gas analyzer — also in ATEX design

Opacity, Light scatter and Triboelectric

Dust probes

Choosing the Right Dust Monitor: Light or back scatter, Triboelectric or Opacity

Monitoring air quality and emissions in industrial settings is crucial for environmental compliance and public health. Dust monitors play a pivotal role in measuring particulate matter released during various industrial processes. Understanding the differences between Optical or Triboelectric dust monitor types is essential to make an informed decision.

Triboelectric monitors are known for their robustness and reliability, even in challenging environments. They are less affected by factors such as humidity or smoke compared to optical monitors, making them a preferred choice in industries with harsh operating conditions. Additionally, these devices provide a cost-effective solution for continuous monitoring of particulate matter emissions. With their stability and minimal maintenance requirements, triboelectric monitors are ideal for applications where consistent and dependable measurements are crucial.

Opacity provides a proven and recognized solution for the higher dust loadings found after unabated combustion processes or after Electrostatic Precipitators in the Power, Steel and Cement Industries.

Core Features of the Technology are:

• Single pass measurement for simple opacity (colour) measurement.
• Double pass measurement options for Compliance with US EPA PS-1 requirements.

A light source, typically an LED, shines light through the particulate in a stack, and the amount of transmitted light is measured by a receiver. In a single-pass instrument, the receiver is mounted on the opposite side of the stack.

In contrast, a double-pass instrument (compliant with UP EPA PS-1) reflects the light back to the transceiver using a retro-reflector on the far side of the stack. Opacity instruments can be designed to measure two parameters:

• First a measurement of the Stack Opacity (stack blackness) according to the simple equation:
  Opacity = 100 (1 – Received Light/ Transmitted Light) %
• Secondly, a measure of the stack extinction which has a linear relationship with dust concentration for a particular type of dust and dust size:
  Extinction = Natural Log (Received Light/ Transmitted Light)

Light Scatter Probe

Key Features:

  – Can be installed from one side, simplifying setup.

  – Suitable for very low to medium dust concentrations.

Suitability:

  – Tested for compliance with EN 15267 standards.

  – Well-suited for thick and dual-wall channels.

  – Available in a Hastelloy version for use with corrosive gases.

  – Versions available for explosive zones 2/22 or 1/21.

Maintenance:

  – Low-maintenance with features like self-monitoring and contamination monitoring.

  – Automated zero and reference point checks ensure accuracy.

Duct Compatibility:

  – Designed for small to medium duct diameters.

  – No alignment required for installation, allowing for quick and straightforward setup.

Designed with ease of use and durability in mind, particularly for challenging environments where maintenance and accuracy are crucial.

Optimization H2,O2,LEL and multigas systems

At AQMS Group, we offer a diverse range of equipment designed to measure the most challenging gases in the harshest environments.

Not only do we provide high-quality analyzers, but we also have a dedicated team ready to design and build customized sampling systems to complement our instrumentation. Whether you need a straightforward inline filter and pump system or a more complex setup for high dust load samples, we can handle a wide variety of sampling conditions.

Please feel free to reach out with any questions or if you need further information.

Hydrogen / Oxygen / LEL

Hydrogen, the most abundant chemical element, is crucial across various industries for safety, regulatory, and process control purposes. We offer hydrogen analyzers from Eaton that deliver fast and accurate results.

Given hydrogen’s high thermal conductivity, our range of katharometer (thermal conductivity) analyzers is well-suited for measuring H₂ levels in gases. With a selection of high-quality machines designed for diverse applications, we have the perfect hydrogen analyzer solution to meet your business’s specific needs.

General purpose or ATEX, UKCA, IECEx, cQPSus, TR CU & Ex hazardous area certified models

• SIL2 Capable
• Ranges available: 0…0.5 % up to 0…50 % & 20, 80 or 90…100 %
• Touch-screen display allows calibration or adjustment without the need for a hot works permit
• Intrinsic error (accuracy) is better than 1 % full scale
• Zero range stability better than 0.25 % of range per month
• Outputs include RS485 and two 4…20 mA (following NAMUR NE 44 standard)
• Low cost of ownership due to minimal maintenance and no consumable parts

Oxygen IECEx rated analyser pictured below.

FTIR

The Portable FTIR Gas Analyzer is available for rental. This advanced emissions monitor detects up to 50 gases simultaneously, including H₂O, CO₂, CO, NO, NO₂, N₂O, SO₂, NH₃, CH₄, HCl, HF, and various VOCs. Ideal for stack testers, engineers, and lab staff, the DX4000 offers user-friendly applications and flexible mobility. It allows for efficient on-site multi-gas monitoring and process optimization, saving costs by eliminating the need for multiple pieces of capital equipment.

Also available for rental.