Product category:
Air Pollution Monitor and Control
News Release from: Laboratory Impex Systems | Subject: Shrouded probe
Edited by the Processingtalk Editorial
Team on 21 November 2006
Shrouded probe for particulate emissions
sampling
The new Lab Impex Shrouded Probe promises a bright future for stack emissions monitoring - producing more accurate results than current standard isokinetic sampling nozzles
The new Lab Impex Shrouded Probe promises a bright future for stack emissions monitoring - producing more accurate results than current standard isokinetic sampling nozzles The design has been was approved by the ANSI N13.1 committee for US use and has since become standard for stack emissions sampling in America
This article was originally published on Processingtalk on 7 Feb 2005 at 8.00am (UK)
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Having been designed and tested at the Texas A and M University the shrouded probe has been shown to provide far better transmission ratios and more representative emissions sampling.
The Department of the Environment (DOE) in the UK now claim that 'the use of multiple-point sampling nozzles is no longer good practice due to the limitations of mixing'.
The shrouded probe greatly reduces particle losses that usually occur due to wall collisions and therefore 'operated at a single location in a well-mixed, stable profile, will provide a more representative sample than a rake of numerous small probes'.
Texas A and M University and radiometric instrumentation specialists, Laboratory Impex Systems (LIS), have collaborated to design a shrouded probe for typical UK flow and sampling rates.
The benefits to the end user are apparent, and the probe meets legislation and standards requirements; an anisokinetic shrouded probe conforms to the Atmospheric Radiation Measurement (ARM) criteria, whereas an isokinetic probe does not.
The evidence that supports the shrouded probe as a method to sample emissions is self-evident and is changing the accuracy that sampling can achieve in the field.
It is clear that the shrouded probe is worthy of serious consideration by any nuclear facility undergoing new-builds or upgrades that are required to meet BPM (Best Practicable Means) / BPEO (Best Practicable Environmental Option) or in Europe, BAT (Best Available Technique).
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