ADS Environmental Services IETG FlowHawk QR 775012 A4 - Manual (Page 224)

Configuration and Activation 6-45
 Backward Choose this option for monitoring points at
which the Surface 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
Surface 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 Auto (default) option 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 second
(mps) on a regular basis, ADS recommends choosing the 4.572
mps option for this parameter.
 Transmit Frequency Select the frequency at which to
transmit the signal. IETG recommends leaving the default
setting (Normal) for most applications. However, if hydraulic
conditions at the site are resulting in questionable or erroneous
readings, consider applying the other frequency option.
Contact IETG for assistance when necessary.
 Gain This value represents the factor applied to raw velocity
(RAWVEL entity in Profile) to determine average velocity
(VELOCITY entity in Profile) and to calculate quantity for
typical daily flows. Profile does not apply the Gain to the
velocity readings reported in Diagnostics, where the raw
velocity readings are used for comparison against the manual
measurements. This parameter is editable through the
Installation Generator or the Quantity Coefficient
Generator.