ASME PTC 38 Determining the Concentration of Particulate Matter in a Gas Stream
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ASME PTC 38 Document Information:
Title
Determining the Concentration of Particulate Matter in a Gas Stream
ASME International
Publication Date:
Jan 1, 1980
Scope:
Concentration of Particulate Matter
This Code prescribes methods for measuring the average weight
concentration of particulate matter
carried in a gas stream. Measurement on any other basis (e.g.,
particle count, dust spot, opacity,
etc.) is beyond the scope of this Code.
Gas Flow Measurement
Determination of total gas flow may be based on measurement of
velocity pressure and gas density at
representative points in the duct cross section, on actual combustion
calculations (stoichiometry),
or by data from calibrated gas metering devices. Alternate methods for
measuring total gas flow
rate may be used by agreement of all the concerned parties.
Particle Size Measurement
The scope of this Code does not include the measurement of particle
size distribution. Test
procedures for this purpose are contained in ASME Performance Test
Code 28. While some in situ type
samplers designed for the collection of particulate matter in various
size fractions may have a
limited capability for determining total particulate matter
concentrations in a gas sample, data
thus obtained should only be used for the measurement of particle size
distribution and not for the
weight rate of flow of particulate matter in the gas stream.
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