Method for monitoring a transmitter and corresponding transmitter

A transmitter, comprising:

• at least one measurement unit which determines at least one measurement quantity that is related to at least one of a physical and/or chemical measurement or process quantity and produces a measurement signal which is dependent on said at least one measurement quantity,
• a transmission unit interconnected with the measurement unit in a manner at least for receiving the measurement signal from the measurement unit and for transferring an electrical output signal to at least one signal transmission element based on a measurement signal received, and
• at least one connecting line for transmitting energy to the measurement unit,
• wherein the measurement unit is connected so as to act on the connecting line when an error state is found to exist, and
• wherein the measurement unit is adapted for shifting the transmission unit into a definable state and transferring an error signal to the transmission unit via acting on the connecting line, and
• wherein an amount of energy stored in the transmitter is influenced via the measuring unit acting on the connecting line such that a charging state monitoring unit detects a charging state error.