Flowlink 5.1 Software Instruction Manual - Isco

Isco Flowlink 5.1 ® Software
Site Window - 2100
Velocity Diagnostics
Flow Rate - 2100
After downloading the diagnostics from the module, Flowlink
displays the information in the Report window. This information
can be useful when evaluating the sensor’s performance, or when
troubleshooting a problem with the assistance of Teledyne Isco’s
Technical Service Department. A brief outline on how to read a
velocity diagnostics report appears below.
The first section identifies when the report was created and the
type of report.
The second section provides information about the attached
velocity sensor.
The third section lists the ten most recent measurements. Recent
measurement data is listed in columns:
• Date and Time - the instrument’s date and time that
the measurement was taken.
• Signal% - the approximate strength of sensor’s return
signal. Percentages below 10 indicate a weak signal.
Percentages near 100 indicate a strong signal. Normal
percentages are from 10 to 90.
• Spectrum% - Reports the amount of noise in the area
velocity return signal. Percentages below 25 indicate a
noisy return signal, while percentages near 100 indicate
a clear signal. Percentages should never vary more than
25% from one reading to the next. Wide variations
indicate an unstable installation. Low percentages
should not cause concern if the level and velocity
readings are accurate and reliable. It is possible that low
percentages are normal for your installation and the
characteristics of the flow stream.
• Velocity - The value of the velocity measurement. The
unit of measure is shown enclosed in parentheses.
• Level - The measured level at the time of the velocity
measurement. The unit of measure is shown enclosed in
parentheses.
The fourth section lists Possible Measurement Problems in
columns. These columns can be read just as the Recent
Measurements except that an additional column identifies the
type of measurement problem.
Velocity diagnostics are most beneficial when monitored longterm.
A slow drop in percentages can indicate silt or debris
building up near the sensor, while a sudden large change can
indicate a failure at the site.
The Flow Rate and Flow Rate 2 tabs of the Site window are used
to view or change flow conversion settings. Access this tab by
clicking on the “Flow Rate” or “Flow Rate 2” label on the
Measurements tab.
Modules able to calculate flow rates can display this tab. From
this tab you may:
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