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, [email protected], www.oenenterprises.co.za
Further reading:
Advancing process weighing and weighbridge automation
Analytical Instrumentation & Environmental Monitoring
Sasco Africa, a leader in industrial weighing solutions, is showcasing its latest innovations in process weighing and weighbridge automation.
Read more...
Oxygen measurement in beverages
Analytical Instrumentation & Environmental Monitoring
[Sponsored] Anton Paar offers a complete range of oxygen measurement instruments for total package oxygen (TPO) measurements, at-line quality control (QC), and in-process monitoring. These instruments help beverage manufacturers achieve accurate, reliable oxygen control at every stage of production.
Read more...
Temperature, humidity and barometric pressure transmitter
Senseca
Analytical Instrumentation & Environmental Monitoring
Senseca’s environmental temperature, relative humidity and barometric pressure transmitter, ENVIROsense has all three measurement criteria available in one device.
Read more...
Analysers achieve OIML R140/MID accuracy class A certification
Analytical Instrumentation & Environmental Monitoring
Qmicro by Sensirion has received the OIML R140/MID accuracy class A certificate No. TC12537 for its DynamiQ-X GC analysers for the analysis of natural gas and natural gas blended with hydrogen.
Read more...
Sustainable water management
Wearcheck
Analytical Instrumentation & Environmental Monitoring
Water sustainability is critical for the future wellbeing of people, land and marine ecosystems, and socio-economic development. WearCheck Water provides a range of water analysis techniques to determine water quality for various sectors, including mining, agriculture, domestic and the healthcare industry.”
Read more...
Biofilm monitoring system
Instek Control
Analytical Instrumentation & Environmental Monitoring
Alvim, through Instek Controls, provides innovative, high-tech solutions for biofilm and biofouling monitoring in industrial plants.
Read more...
WearCheck Water earns AdBlue/DEF analysis accreditation
Wearcheck
Analytical Instrumentation & Environmental Monitoring
WearCheck Water recently became the first laboratory in Africa to be officially ISO17025 accredited to test AdBlue diesel exhaust fluid by the South African National Accreditation System.
Read more...
Streamlining strain gauge load cell integration
Vepac Electronics
Analytical Instrumentation & Environmental Monitoring
Vepac’s data acquisition hardware provides an efficient and effective all-in-one solution for customers looking to simplify, enhance and optimise their strain gauge load cell systems.
Read more...
Oxygen measurement in beverages
Anton Paar
Analytical Instrumentation & Environmental Monitoring
[Sponsored] Anton Paar offers a complete range of oxygen measurement instruments for total package oxygen (TPO) measurements, at-line quality control (QC), and in-process monitoring. These instruments help beverage manufacturers achieve accurate, reliable oxygen control at every stage of production.
Read more...
Sensors and controls for food, beverage and pharmaceutical
Instek Control
Analytical Instrumentation & Environmental Monitoring
Included in Instek Control’s range is Anderson-Negele, which has adopted ‘Hygienic By Design’ as its guiding principle, with a particular focus on meeting the stringent regulatory requirements found in industries such as dairy, brewery or pharmaceutical.
Read more...
printer friendly version