September 2001Analytical Instrumentation & Environmental Monitoring
Gas analysis has traditionally concentrated on emission measurements which primarily entail extraction methods. The current industrial trend, measuring gas concentration in order to control processes, involves completely new analysing technologies.
AltOptronic makes use of a measuring method that makes it possible to obtain in situ measurements directly from the heart of a process. A method that does not affect the process itself and that provides split-second responses and highly accurate results. A method that is automatically self-calibrating and practically maintenance-free.
The measurement method is based on a patented concept that makes it possible to take measurements in extreme environments. There are no sensitive electronics located at hazardous measuring points and yet, this method has the ability to read the exact gas concentration despite high temperatures, powerful magnetic fields and explosive environments.
Use is made of a laser diode technique in which the laser light is specifically adapted to the gas being measured, thereby eliminating interference from other gases. The patented signal-reading technique allows measurements to be made in environments containing heavy and dynamic dust concentrations.
The design of the analyser is intended to provide new possibilities for process control and emission measurement. A number of advantages are gained from the ability to read measurement signals during the early part of a process phase and in realtime from within an incineration or other relevant process.
The advantages vary depending on the process in question. This unique method works to increased efficiency and lower process maintenance costs, which in turn result in economic rewards and reduced impact on the environment.
Chemical and petrochemical industries
The LDS 3000 is certified according to the EEx ia IIB T6 and is well suited for a number of applications.
Block diagram of LDS3000
It is possible to obtain exact measurement signals directly from the heart of the most adverse incineration environments. The sensors exist in several different designs depending on the application. The most common is the crossduct, where a mean value of the gas concentration is obtained from the measured path. In other words, there is not only one measurement point.
Since the sensors do not contain any sensitive electronics, they fulfil their function even in extremely difficult environments involving high temperatures and high magnetic fields. They are simple to install and require low maintenance. At the same time, they fulfil the standards of IP65 and one model is certified EEx ia IIBT6.
The laser unit is placed inside the central unit, from where the laser light is conveyed to the measuring point via optical filter. The LDS 3000 can simultaneously handle measurements in up to three different points. The laser light is therefore divided into separated beams. After the light has passed through the measuring path, the resulting measurement signals are returned to the central unit as optical signals. The signals are then compared with the equivalent signal from a reference cell built into the central unit that contains a known concentration of the gas to be measured. By comparing the height of the absorption lines, the gas concentration in the process can be calculated.
In other words, the LDS 3000 is continuously self-calibrating. Since it uses a laser diode that is tuned to a single absorption line corresponding to the gas being measured, the signal is free of interference. With the patented signal control, the measurements are not affected by any dust presence, even when dust levels vary significantly.
The precision is 2% of the reading. The resolution depends on gas concentration and is in direct linear relation to the optical measuring path.
Analysers for use in high ambient temperature environments
Analytical Instrumentation & Environmental Monitoring
The 993X series of analysers from Ametek Process Industries are now IECEx Zone 2 certified for use in locations with up to 60°C ambient temperature. Built with IP66-rated enclosures and using an integrated cooling system, they can be installed outdoors or in minimally temperature-controlled enclosures, reducing complexity while lowering capital and operating costs.
Read more...The art of precision measurement
Analytical Instrumentation & Environmental Monitoring
To achieve precise, reliable measurement results when scanning component parts, use is frequently made of reference points. In optical measuring processes, these permit the referencing of three-dimensional objects during the digitisation.
Read more...Vibration test system supports international space industry TANDM Technologies
Analytical Instrumentation & Environmental Monitoring
Dragonfly Aerospace has launched EOS SAT-1, one of seven satellites in the world’s first agricultural-focused constellation. With optimisation of resources being a key component for Dragonfly, it called on TANDM to assist in creating and heavily expanding its environmental testing capabilities by providing a vibration test system that allowed it to perform in-house vibration and shock testing.
Read more...Sensor technology for brewing Endress+Hauser South Africa
Analytical Instrumentation & Environmental Monitoring
Brewing is a delicate balance, blending tradition with innovation. Now, modern sensor technology is stepping in to perfect the art of fermentation.
Read more...Loesche gets dirty Loesche South Africa
Analytical Instrumentation & Environmental Monitoring
The world’s attention is on environmental sustainability, and the pressure on countries and companies to demonstrate their commitment to preserving the environment and preventing climate change is at an all-time high. As we confront a multitude of environmental and social challenges, managing waste and maximising landfill diversion can play a key role.
Read more...Water systems with energy savings and sustainability Labotec
Analytical Instrumentation & Environmental Monitoring
ELGA Veolia has relaunched its award-winning PURELAB flex range, with features to reduce the system’s environmental footprint and incorporate some of the latest innovations in water purification technologies. The ecological improvements integrated into the flex range have been made to reduce water and power consumption.
Read more...Keeping an eye on invisible radiation Omniflex Remote Monitoring Specialists
Analytical Instrumentation & Environmental Monitoring
At its peak in 1994, the energy generation capacity of the UK’s nuclear power stations was 12,7 GW across 16 plants. In 2024, the capacity has fallen to around 5 GW, and the number of stations is down to nine. However, this is far from the end of the story as spent nuclear fuel remains radioactive for centuries, and requires rigorous safety processes to safeguard against leaks.
Read more...Technology for water sustainability Endress+Hauser South Africa
Analytical Instrumentation & Environmental Monitoring
The sustainability of surface water is critical for South Africa’s economic development, social well-being and environmental health. Endress+Hauser has a full range of liquid analysis sensors and transmitters to measure important parameters and has an excellent global track record in water and wastewater process plants and various surface and industrial water monitoring sites.
Read more...Reducing water consumption in the cement industry Loesche South Africa
Analytical Instrumentation & Environmental Monitoring
Water is a finite and irreplaceable resource, fundamental to life on earth. LOESCHE’s vision is to enable its customers to produce high-quality cement, without any water consumption.
Read more...Ensuring occupational health and safety in mining
Analytical Instrumentation & Environmental Monitoring
Probe Integrated Mining Technologies (Probe IMT) has partnered with M3SH Technology to offer state-of-the-art environmental monitoring solutions that address these dual requirements.
printer friendly version