Patent ID: 8602746

Claim:
An electrical system for a chemical injection pump, comprising: a power supply; a controller coupled to the power supply, the controller supporting a plurality of reciprocating pump activity levels, wherein each reciprocating pump activity level corresponds to a different predetermined integer number of on/off reciprocating pump cycles within a time period, and a user interface coupled to the controller, the user interface displays a plurality of predetermined integer numbers of on/off reciprocating pump cycles for each of the pump activity levels and receives a user input identifying a default predetermined integer number of on/off reciprocating pump cycles for a first activity level; wherein, if a voltage of the power supply drops below a first threshold, the controller automatically causes the chemical injection pump to operate at a second reciprocating pump activity level, the second reciprocating pump activity level associated with a lower predetermined integer number of on/off reciprocating pump cycles than the first activity level, wherein, if the voltage of the power supply drops below a second threshold, the controller automatically causes the chemical injection pump to operate at a minimum reciprocating pump activity level, the minimum reciprocating pump activity level associated with a lower predetermined integer number of on/off reciprocating pump cycles than the second activity level, wherein, if the voltage of the power supply drops below a third threshold, the controller automatically causes the chemical injection pump to turn off, and wherein, if the voltage of the power supply rises above the first threshold, the controller automatically causes the chemical injection pump to operate at the first activity level.