Baseline Systems BaseStation 1000 - Manual (Page 68)

BaseStation 1000 Irrigation Controller Manual
Enabling Flow Variance
On the BaseStation 1000, flow variance monitors a water source for flow that exceeds the variance
limit. During normal program watering, the controller compares the sum of the design flow (or
learned flow) from all running zones against the measured flow of the flow device (or the sum of all
flow devices supplying water to the mainline). The measured flow may be higher than the expected
flow. When the ratio becomes greater than the variance limit, the controller identifies the faulty
zone and stops it. A message displays on the controller and in BaseManager. The zone will not run
again until the message and the fault are cleared.
You can set the flow variance limit to any value between 10% and 200%.
1. Press the Flow Setup button. The Flow Setup menu displays.
2. The Water Source Setup option should be highlighted. If it is not highlighted, press the  or
 button to highlight it, and then press the OK button. The Water Source Setup screen
displays.
3. Press the  button to highlight the water source that you want to enable a flow variance limit
for, and then press the OK button. The Flow Setup menu for that water source displays.
4. Press the  or  button to highlight the Flow Management option, and then press the OK
button. The Flow Management menu displays.
5. Press the  button to highlight the Flow Variance Limit option, and then press the OK
button. The Flow Variance Limit screen displays.
6. In the Variance Limit field, press the + or – button to change the number for the variance
limit.
7. Press the  button to highlight the Flow Variance Enable field. Perform one of the following
actions:
 If flow variance is currently enabled, a checkmark displays in the Flow Variance Enable
field. Press the + or – button to remove the checkmark.
 If flow variance is currently disabled, there is no checkmark in the Flow Variance Enable
field. Press the + or – button to replace the checkmark.
Setting the Pipe Fill Time for a Water Source
To calibrate the Learn Flow process on the BaseStation 1000, you should enter the pipe fill time
before you initiate the Learn Flow. The pipe fill time is the number of minutes that it takes to fill the
empty line, activate the valve, and reach a steady state operating pressure.
Note: The easiest way to determine the pipe fill time is to turn on the zone and then time how long
it takes until you see water flowing at a steady pressure.
1. Press the Flow Setup button. The Flow Setup menu displays.
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