Signal transmission device for a measuring probe, as well as transmission method and measuring probe

Method for the transmission of signals between a measuring probe and a signal-processing unit comprising:

• applying an input signal provided by an electrode of the measuring probe to a differential amplifier non-inverting input to deliver a low-impedance output signal to a transmission line which transmits the output signal to a signal-processing unit;
• and
• supplying the output signal of the differential amplifier via a first resistor to the transmission line as well as to the inverting input of the differential amplifier, and supplying the output signal to the input of a first control unit that is operable to register signals applied to the transmission line by the signal-processing unit.

A measuring probe for measuring at least one of pH and oxygen, having a signal transmission device comprising:

• a differential amplifier having a non-inverting input for receiving an input signal provided by an electrode of a measuring probe, and having an output configured to deliver a low-impedance output signal via a transmission line to a signal-processing unit, wherein the output of the differential amplifier is connected via a first resistor to the transmission line and to an inverting input of the differential amplifier, and is connected to the input of a first control unit that is operable to register signals applied to the transmission line by the signal-processing unit.