In-situ dust concentration and opacity monitor
February 2004
Analytical Instrumentation & Environmental Monitoring
The new D-R 290 monitor from Durag is designed for continuous opacity or dust monitoring of flue gas in stacks and ductwork. It is suitable for systems firing coal, fuel oil or a mixture of fuels in converter plants, asphalt mixing plants and cement production plants.
The microprocessor-based monitor operates on the auto collimation (double pass) measuring principle. It has a measuring range extending from 0 to 200 mg/m3 up to 0 to 4 000 mg/m3 with a 1 to 12 m path length. Programming is via the control display unit or remote bus interface and the measuring data is available as analog current or a digital signal via bus interface.
A photo-element alternately receives the measurement and comparison light beam. Switching between these, it proceeds through an electro-magnetically actuated rotary diaphragm. For check value compensation, comparative measurements of 2 s occur every 2 minutes.
The D-R 290 is equipped with two analog measurement value outputs and each output has two selectable extinction or opacity ranges. The measurement ranges are selectable from 0,1 to 1,6 for extinction, and from 20 to 100% for opacity. Opacity computation of the opacity at the stack outlet is possible by means of the stack correction factor. Periodically, the monitor automatically performs a cycle check, measuring and indicating the zero point, the soiling of the optical boundary surfaces, as well as providing a reference value. Condensation and deposits are avoided on the signal lenses by the use of a heated pane.
Various options are available including bus interfaces, explosion-proof operation, automatic fail-safe shutters and an additional on-stack display panel.
For more information contact Noel Bauchop, OEN Enterprises, 011 675 4447, [email protected], www.oenenterprises.co.za
Further reading:
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.
Read more...
printer friendly version