Table 18 (Continued)
Compositing Methods
Sample
Compositing
Mode
Principle
Advantages
Disadvantages
Comments
Periodic
Constant time
Minimal
Manual compositing from flow
Used in
interval between
chart. In absence of prior
automatic
samples; sample
information on the ratio of
samplers and
volume
minimum to maximum flow,
widely used as
proportional to
there is a chance of
manual method
total stream flow
collecting either too small
at time of sample
or too large individual
discrete samples for a given
composite volume.
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