ADS 507165, Installation, Operation And Maintenance Manual

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4-34 ADS ® Manual
z
Enable
Select this checkbox to ensure the monitor begins
taking velocity readings at the designated interval once
activated. This option is selected by default.
z
Flow Type Select the option that best reflects the kind of
flow conditions that typically occur at the monitoring point
from the drop-down list:
‰ Typical Flow exhibits a typical diurnal pattern. This is
the default setting.
‰ Wet/Stagnant
Flow remains in the pipe, but moves only
during wet weather events.
‰ Usually Dry Pipe typically remains dry, except under
wet weather conditions.
z
Velocity Direction Select one of the following options that
reflects the general direction of the flow at the monitoring
point and position of the velocity sensor.
The default is
Forward .
‰ Bidirectional Choose this option for monitoring points
that potentially experience reverse flows. The AV|Gated
sensor typically is positioned facing upstream into the
flow. Choosing this ensures the monitor analyzes both
positive and negative values returned from the velocity
sensor.
‰ Forward Choose this option for monitoring points where
reverse flows are not expected and to ensure the monitor
only analyzes positive values returned from the velocity
sensor. The AV|Gated sensor is typically positioned
facing upstream into the flow. This is the most common,
and the default, option for selection. ADS recommends
using this setting for most monitoring applications.
Forward is the default selection for Velocity Direction .
‰ Backward Choose this option for monitoring points
where the AV|Gated is installed facing downstream
(backwards) from the oncoming flow. In locations where
there is high risk of debris hitting the sensor, this might be
the desired option.