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SPIDER is also capable of calculating inlet flow which can be used to estimate the amount of non-revenue
water in the system.
Additional Options:
It is possible to choose between 3 different maintenance functions.
Pump exercise:
At small pumping stations where the supply may depend on the seasons such as wells in
the vacation homes, it can be helpful to get the pumps exercised at regular intervals. With SPIDER you can
select this function and determine the time of day for exercise (for example Value 700 = 7:00), but you can
choose how many days to go from the last pumping to the pump to exercise and you can enter the
duration in seconds of exercise.
Daily emptying:
It is possible to have SPIDER run an emptying function at a fixed time of day. You put a
check mark in "Daily emptying on/off" and enter the desired time of day. For example, the value 915 will be
perceived as the time 9:15.
Depth Pumping:
SPIDER also supports depth pumping. Here you can choose the time of day for depth
pumping, and the days between depth pumping.
Ground water lowering:
By choosing ground water level the SPIDER can keep a constant water table level. Sensor elevation is the top
of the sensor tube in relation to a given terrain point. In Denmark it is called Kote DVR90. The sounding level
is the sensor depth under terrain. After putting in this data simple just pick the regulation type you wish to
use.
