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Broken Bag Detector
Broken Bag Detectors continuously monitor for filter leakage as well as indicate the
relative condition of bags and acts as a preventative maintenance tool.
The BBD utilises AC Coupled Triboelectric technology. As particles travel through the
process they develop a charge. This charge is transferred as the particle passes or
impacts the sensing element. The resulting current is amplified, filtered, rectified and
further filtered looking only at the AC component, giving a linear representation of the
concentration or mass flow rate of the particles in the gas stream.
The reason for measuring the AC component is that, compared to the DC component, the
electronics are more sensitive. The AC signal is substantially less affected by influences
such as amplifier noise and process parameters, which includes the build-up of process
dust on the sensing rod.
The BBD5 remote sensing head totally filters out any 50Hz or 60Hz frequencies related to
mains supply. The amplified signal is then sent via data cable to the control unit for futher
processing and display.
relative condition of bags and acts as a preventative maintenance tool.
The BBD utilises AC Coupled Triboelectric technology. As particles travel through the
process they develop a charge. This charge is transferred as the particle passes or
impacts the sensing element. The resulting current is amplified, filtered, rectified and
further filtered looking only at the AC component, giving a linear representation of the
concentration or mass flow rate of the particles in the gas stream.
The reason for measuring the AC component is that, compared to the DC component, the
electronics are more sensitive. The AC signal is substantially less affected by influences
such as amplifier noise and process parameters, which includes the build-up of process
dust on the sensing rod.
The BBD5 remote sensing head totally filters out any 50Hz or 60Hz frequencies related to
mains supply. The amplified signal is then sent via data cable to the control unit for futher
processing and display.
Description
Benefits
- Detects most particles regardless of composition
- very sensitive due to AC coupled technology
- Can monitor extremely small particles eg. galvanising fume (20.1µm).
- Can be used over a wide range of particulate densities
- Can assist in dramatically reducing plant down time through filter failures
| Copyright© 2005 Heather Brown. All rights reserved. Last Updated 05-03-2010 |