Device for the removal of ions from a polar liquid, e. A baseline injection delay curve representing an injection delay for a predetermined type of fuel injector is established for a range of rail pressures. The preprogrammed communication device, upon recognition of a multi-function code, selects a communication channel or messaging protocol and forwards information related to the service invocation to a service fulfillment platform. The command signals enable control of the medical imaging system from a remote location. At this time, the first and second pneumatic springs and the first and second electromagnetic actuators divide a frequency band with predetermined filters.