User Manual

Configura tion and Activation 6-23
 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 Choo se this option for monitoring points
that potentially experience reverse flows. The Peak
Combo Sensor typically is positioned facing upstream into
the flo w. 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. T he Peak Combo Sensor typically is 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 at
which the Peak Combo Sensor has been positioned fa cing
downstream and to ensure the monit or onl y analyzes flows
moving away from the face of the sensor. O ne application
in which this would be the preferable option would be for
measuring velocity in an outgoing li ne following two
incoming li nes in the manhole.
 Backward Bidirectional Choose this option when the
Peak Combo Sensor is installed facing downstream and to
ensure the monitor analyzes flows moving both away from
and towar d the face of the sensor. This option would be
beneficial, fo r example, when using a weir to measure
overflows with the pote ntial of river intrusion.
 Maximum Velocity Select the maximum expected velocity
that will occur at the site for the monitor to use in fine-tuning
the velocity data. The default setting is Auto, whic h serve s t o
optimize the range and resolution of the velocity data samples
to match the characteristics of the flow. However, if the
velocity readings at the location measure at least 10 feet per
second (fps) on a regul ar ba sis, ADS recommends choosing the