Analytical Instrumentation & Environmental Monitoring


Monitoring of flue gas filters

July 2014 Analytical Instrumentation & Environmental Monitoring

The Durag D-FW 230/D-FW 231 filter monitors may be used for continuous monitoring of filter installations in flue gas ducts, duct work for dust extraction and similar applications. The filter monitor is placed on the clean-gas side, behind a filter, and will report any defect. By using filter monitors at the most important emission sources or filter, appropriate action may be taken in the event of a malfunction to prevent or limit damage.

With its compact and rugged design, the filter monitor provides a good price/performance ratio with minimal maintenance required. It is ideal for use in power stations, bag filter plants of all types, dust extraction plants in the production industry and waste incineration plants. The Durag D-FW 230/D-FW 231 consists of a measuring probe and filter monitor. The monitor has a simple construction and is easy to install with no need for a PC or laptop. Meeting IP65 requirements, the filter monitors have a flue gas pressure from -500 to 500 hPa and a flue gas temperature above dew point up to 200°C with an option of up to 500°C.

A measuring probe inserted into the flue gas duct allows the sensor to record the electrical charge of the dust particles. Complete signal processing occurs in the sensor. The measured value is then transmitted as an interference resistant 4-20 mA signal and is available at the terminal strip.

The D-FW 230 is designed for single applications. The control unit monitors the measured values digitally and uses a relay to signal any exceeded limit value. The limit value threshold may be set anywhere from 4-20 mA. Zero testing may be carried out directly from the control unit with the flip of a switch.

The probe is suitable for use in a multi-filter plant, where supervision of all filters is done by means of a central processing unit. The length of the flow path prior to reaching the filter monitor must total at least 5x the diameter of the channel. To keep moisture away from the sensor isolator, the sensor should be mounted horizontally or with a downward slope.

For more information contact Mike Andrews, OEN Enterprises, +27 (0)11 675 4447, sales01@oenenterprises.co.za, www.oenenterprises.co.za



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Robust oxygen analyser for challenging conditions
June 2020, Instrotech , Analytical Instrumentation & Environmental Monitoring
A major supplier of nitrogen generators has selected Michell’s XTP601 oxygen analyser to ensure N2 quality as part of its engineered systems for the oil and gas industry in the Middle East. The containerised ...

Read more...
Process moisture analyser
July 2020, Instrotech , Analytical Instrumentation & Environmental Monitoring
Michell Instruments has announced that an independent report confirms excellent measurement performance of its OptiPeak TDL600 process moisture analyser. A new report undertaken by DBI Gas und Umwelttechnik ...

Read more...
Fluid Systems Africa expands product range
May 2020, Fluid Systems Africa , Analytical Instrumentation & Environmental Monitoring
Fluid Systems Africa (FSA) has been supplying industry with the highest quality fluid system components for a number of years and is now pleased to announce that it has expanded the product range. This ...

Read more...
Is your building comfortable?
June 2020, GHM Messtechnik SA , Analytical Instrumentation & Environmental Monitoring
When was the last time you did a health check on your work environment? Monitoring the quality and temperature of the air, air-conditioning, heating, ventilation, outside weather, and even the amount ...

Read more...
Process plant emissions control
June 2020, RTS Africa Technologies , Analytical Instrumentation & Environmental Monitoring
RTS Africa Technologies (RTS) is a specialised Tshwane-based company focused on supplying engineered solutions to problems experienced by process engineers in industry. There is now a serious problem ...

Read more...
Fluid Systems Africa expands product range
June 2020, Fluid Systems Africa , Analytical Instrumentation & Environmental Monitoring
Fluid Systems Africa (FSA) has been supplying industry with the highest quality fluid system components for a number of years and is now pleased to announce that it has expanded the product range. This ...

Read more...
Dry wells for field applications
June 2020, Comtest , Analytical Instrumentation & Environmental Monitoring
Fluke’s 914X series field metrology wells extend high performance to the industrial process environment by maximising portability, speed, and functionality with little compromise to metrology performance.  ...

Read more...
Carbon dioxide monitoring
April 2020 , Analytical Instrumentation & Environmental Monitoring
Monitoring devices able to detect high levels of carbon dioxide have been introduced to the local market to help detect poor air quality that can lead to sick building syndrome. Distributed and supported ...

Read more...
Process monitoring in laboratories – the smart analyser
April 2020 , Analytical Instrumentation & Environmental Monitoring
LiquiSonic Lab is specifically designed for laboratory applications and as a portable system in process plants. It is provided with a splash water-proof housing, hence is also suited for rough operating ...

Read more...
Robots in the time of Covid-19
April 2020 , Analytical Instrumentation & Environmental Monitoring
The contagion of Covid-19 has swept through the lives of people across the globe, disrupted industries and had a dramatic impact on the world’s economy. Some analysts predict the pandemic’s impact could ...

Read more...