Optical opacity/dust monitor

February 2011 Analytical Instrumentation & Environmental Monitoring

The Durag D-R 290 optical opacity/dust monitor, supplied by OEN Enterprises, provides continuous in situ dust and opacity measurement in plants with dust levels above 50 mg /m³. The monitor is ideally suited to systems firing coal, fuel oil or fuel mixtures, Typical applications are in converter plants, asphalt mixing plants and cement production plants.

The system consists of a measuring head, reflector, control and display unit, purge air system and mounting flanges. The microprocessor-based monitor utilises the double pass auto-collimation principle, where a light beam crosses the measurement path twice and the light attenuation is measured. Optics and electronics are housed in a hermetically sealed unit to prevent smoke or dust from entering the device.

The D-R 290 has adjustable opacity measurement ranges from 0–20% or 0–100%. Dust levels can range from 0-4000 mg/m³ in duct diameters from 1 to 18 metres. Programming is done through the control display unit or remote bus interface and the output data is available as analogue current or digitally via the bus.

The monitor is suitable for use in an ambient temperature range from 20 to 50°C with IP54 protection. Various user options are available, including explosion-proof operation, automatic fail-safe shutters, temperature compensation, an on-stack display panel and a filter set for sensitivity and linearity control.

For more information contact Colwyn Savings, OEN Enterprises, +27 (0)11 675 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...

---