Flowlink 5.1 Software Instruction Manual - Isco

Isco Flowlink 5.1 ® Software
Site Window - 2100
Velocity - 2100
Zero Level Offset
The Velocity tab of the Site window is used to view or change
velocity measurement settings. Access this tab by clicking on the
“Velocity” label on the Measurements tab.
Modules able to read liquid velocities can display this tab. From
this tab you may:
• View the Module and Measurement name.
• View the current Velocity measurement.
• Set the measurement units by selecting an option from
the pull-down list.
• Enter a Zero level offset value.
• Control how flow readings are recorded if the module is
unable to measure velocity. Check the “Set flow rate to
zero if no velocity data” to record the flow rate as “0.000”
when the module is unable to take a velocity reading. If
the check box is left blank, a no data code will be
recorded instead.
• Prevent interference from other velocity measurements.
If the area velocity sensors of a multiple-module site are
placed near each other, it is important that each sensor
receives its own transmitted signal. Check this box when
multiple area velocity sensors are located in the same
channel so that the site will ensure only one velocity
measurement is taken at a time. Leave this box
unchecked for single-module sites or multiple module
sites measuring velocities in separate channels.
• Positive Velocities Only check box. Select this box to log
only positive velocities; negative velocities (reversed
flows) are stored as zero. To log both positive and
negative velocities leave this box blank.
• Set Up Data Storage…
• Diagnostics… - Downloads and displays a text file from
the module. This file reports the performance of the
module and its sensor. The measurement type will
determine which information is included in this report.
• Hide in Measurements check box - when left unchecked,
the Measurements tab displays this reading. If checked,
the Measurements tab hides this reading.
If you have made any changes, click on the Apply button to
update the settings in the module.
Area Velocity sensors are sometimes mounted higher on the side
of the channel to avoid silting.
• If the Area Velocity sensor is mounted on the side of the
channel, enter the vertical distance from the bottom
center of the channel. Refer to the instrument’s
instruction manual to calculate this distance.
• If the Area Velocity sensor is mounted at the bottom of
the channel, simply set the Zero level offset to zero.
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