The invention discloses a non-contact conductometry measuring device stimulated by a
quartz crystal oscillator and a method. In an excitation source of the
quartz crystal oscillator, the output end of the
quartz crystal oscillator is connected with the input end of a DC-blocking and amplitude-adjusting circuit the output end of which is connected with one end for quartz crystal measurement, wherein in the quartz
crystal oscillator, a stimulating quartz crystal and a measuring quartz crystal have the same impedance-frequency characteristics, the input end of a first
inverter is respectively connected with one end of a first
resistor and one end of the stimulating quartz crystal, the output end of the first
inverter is respectively connected with the other end of the first
resistor and one end of a first
capacitor, the input end of a second
inverter is respectively connected with the other end of the first
capacitor and one end of the second
resistor, the output end of the second inverter is respectively connected with the other end of the second resistor and one end of an adjustable
capacitor, and the other end of the adjustable capacitor is connected with the other end of the stimulating quartz crystal. The invention realizes the miniature and the practicability of the conductometry measuring device, has wider measuring range and takes favorable effect.