ADS Environmental Services IETG FlowHawk QR 775012 A4 - Manual (Page 207)

6-28 IETG FlowHawk Manual
 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
Peak/Slimline Peak Combo 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 Peak/Slimline Peak Combo Sensor typically is
positioned facing upstream into the flow. This is the most
common, and the default, option for selection. IETG
recommends using this setting for most monitoring
applications.
 Backward Choose this option for monitoring points at
which the Peak/Slimline Peak Combo Sensor has been
positioned facing downstream and to ensure the monitor
only analyzes flows moving away from the face of the
sensor. One application in which this would be the
preferable option would be for measuring velocity in an
outgoing line following two incoming lines in the manhole.
 Backward Bidirectional Choose this option when the
Peak/Slimline Peak Combo Sensor is installed facing
downstream and to ensure the monitor analyzes flows
moving both away from and toward the face of the sensor.
This option would be beneficial, for example, when using a
weir to measure overflows with the potential 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, which serves to
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 3 meters per