| abstract |
An electrically operated aerosol-generating system is provided, including an electric heater including a heating element configured to heat an aerosol-forming substrate; a power supply; and electric circuitry for an electrically operated aerosol-generating device, in use the electric circuitry being connected to the heater and to the power supply, the electric circuitry including a memory, and being configured to measure an initial resistance, or an initial rate of change of resistance, of the heater within a predetermined time period after power is supplied to the heater, to compare the initial resistance or the initial rate of change of resistance of the heater with a range of acceptable values, and if the initial resistance or the initial rate of change of resistance is outside the range, to prevent the supply of power to the heater, or provide an indication, until the heater or the substrate is replaced. |