Flowlink 5.1 Software Instruction Manual - Isco

Isco Flowlink 5.1 ® Software
Site Window - 2100
3. If desired, click the Add button to add more Calculated
Flows data sets. Otherwise, click the Close button. The
Calculated Flow data set will appear in the workspace.
2100 Series Only - Calculate Flow appears as a data set
under the first module in the workspace.
Calculated flows are performed locally, which means that it is not
necessary to have the flow measurement instrument perform
this conversion and store the data until it can be transferred. As
a result, data retrieval times can be reduced by collecting only
primary data and not derivative calculations. Also, this feature
may free memory partitions and extend number of days readings
can be stored in the instrument.
Note: If you alter the primary device of an existing calculated
flow data set, the flow data already calculated will NOT be
altered. You must first remove this data set and recreate it
allowing the system to completely regenerate the calculated flow
with the new primary device.
Data Storage Setup -
2100
Use this window to configure the data storage rates for the
measurement.
Modules can store measurements at a Primary and Secondary
rate. Primary rates are fixed intervals at which the module will
store measurements. Secondary rates allow you to change the
data storage rate if the measurements meet your defined
conditions.
Secondary storage rates are advantageous when you wish to
examine measurement data in greater detail when a significant
event occurs. Until the event occurs, the module stores data at
the primary storage rate to conserve memory space and power.
When the event occurs, the module preempts the primary rate
and stores the data at the secondary rate. The secondary rate
continues until the condition is no longer met (with a hysteresis).
The examples below illustrate a few ways that secondary rates
can be used.
• Store data more frequently if the flow rate is greater
than or equal to 100 gpm.
• Don’t store data (primary rate OFF) until level is greater
than or equal to 1 ft.
• Store data less frequently if input voltage is less than 9
volts.
To configure data storage rates:
1. Select a primary rate from the pull-down list. Note that
selecting “Off” only disables the primary rate.
2. Select a secondary rate from the “Store data every” pulldown
list. Note that selecting “Off” disables the
secondary rate.
3. Set an equation that defines “When” the data should be
stored at the secondary rate. This equation defines the
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