ADS Environmental Services IETG FlowHawk QR 775012 A4 - Manual (Page 223)

6-44 IETG FlowHawk Manual
Note: When using a Peak Combo Sensor and Surface
Combo Sensor at the same monitoring point, ADS
recommends maintaining the same settings for all of the
parameters corresponding to both Peak Velocity (Velocity
tab on the Edit Peak Combo Parameters dialog) and
Surcharge Peak Velocity (Peak Velocity tab in the Edit
Surface Combo Parameters dialog) to ensure consistency
between the velocity readings. However, you may
consider disabling this sensor when both are present to
conserve battery life, monitor memory, and data collection
time.
 Enable Select this checkbox to enable the parameters for
modification and to ensure the monitor begins taking velocity
readings at the designated interval once activated.
 Sensitivity Select the appropriate velocity sensor sensitivity
from the drop-down list. A sensitivity that is too high may
produce noise, causing interference in the signal and resulting
in spikes in the data. A sensitivity that is too low can produce
readings that are low in comparison with confirmation readings.
The default sensitivity is 10.
 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 Surface
Combo Sensor typically is positioned facing upstream
toward the oncoming 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 Surface Combo Sensor typically is positioned
facing upstream toward the oncoming flow. This is the
most common option for selection. IETG recommends
using this setting for most monitoring applications.