| 摘要 |
A controller for controlling at least one pump connected to a supply network wherein the controller can detect a fault in the supply network by comparing the amount of material being delivered along the supply network with an expected amount of material for that particular time, and indicating a fault if the flow of material in the supply network is outside the range expected for that particular time. Additionally, the controller may control the pump to partially rectify the fault situation to match the amount flowing in the supply network with that expected at that particular time, or shut off the appropriate pump to prevent excessive loss of material from the network.
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