Capacitor type liquid level sensor

The utility model relates to a capacitor-type liquid-level sensor which mainly intends to resolve the problem that the prior sensor has a limited precision, a vulnerability to the interference and a complex circuit, and consists of a plurality of sensors that are connected in tandem. Every two sensors are respectively connected through a connector arranged on the sensors. A panel composed of a circuit board, electrode plates and an insulating layer is arranged on the front of a case of the sensor. A plurality of electrode plates are attached to the circuit board, and coated with insulating layers. A top of the sensor at the most upside is connected with a transmitter. A bottom of the sensor at the most underside is equipped with an end cap. The case of the sensor is filled with the panel through a seal adhesive. The sensor has an absolute precision only related to the arrangement interval of the electrode plates and not changed along with the measurement range. When the measurement range is added, the corresponding sensor is only required to add. The utility model has the advantages of a strong anti-reference, safe and reliable performance and a low cost, which can be widely used for the liquid level measurement in the hydrological, food and environmental protection fields.