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Agilaire 8872 Manual
Chapter 2 Configuration
The
Sigma Theta
takes the
input of a wind direction
channel and calculates a
USEPA sigma theta (Yamartino
method). For a Model 8816
or 8832, the input must be
designated as an analog input,
while in an 8872, the input is
set to a Wind Direction or
Vector Wind Direction channel.
The RMS interval is the
sub-interval for the root-mean-
square combination of
sub-intervals, and for most
applications is set to
15 minutes.
The
Linear Sigma
channel
takes data from an analog
input to calculate a standard
deviation/mathematical sigma
(measure of standard deviation)
of an analog input or another
channel.
