FLOW HEATERS

摘要

A flow heater (1) comprising a heating element (2), a channel (4,5) heated by said heating element (2) for heating liquid flowing therethrough, and temperature sensing means (38) in thermal communication with both the heating element (2) and the channel (4,5) so as to be sensitive to the temperature of the liquid in the channel (4,5) and the temperature of the heating element (2).