Resistor type water-level digital sensor

Abstract

A resistor type water-level digital sensor belongs to the field of water-level sensors, which comprises a testing circuit and a measurement probe essentially formed by an insulation round pipe, a straight electrode and a bent electrode. The upper end and the lower end of the insulation round pipe are respectively provided with a fixing plug. The lower fixing plug is provided with a water feeding hole communicated with a cavity of the insulation round pipe, and the upper fixing plug is provided with a vent. The bottom ends of the straight electrode and the bent electrode are arranged in the insulation round pipe and fixed on the lower fixing plug. The bent portion of the bent electrode is arranged in the insulation round pipe, and the upper ends of the straight electrode and the bent electrode penetrate the upper fixing plug to be provided with an extending end respectively. The testing circuit of the resistor type water-level digital sensor combines a resistor property of the probe, and enables an observation quantity obtained by the circuit to be in primary linear relationship with height of water levels so as to satisfy continuous equal-accuracy measurement of the water levels.

Description

[0001] technical field [0002] The invention belongs to the field of water level monitoring sensors, in particular to a resistive water level digital sensor. Background technique [0003] At present, there are many types of water level sensors on the market, such as ultrasonic principle, capacitance principle, thermal resistance, reed switch, etc. However, sensors that can measure continuously are expensive; or they measure non-continuously and have low accuracy. To achieve measurement accuracy with fixed grid points, more measurement grid points need to be installed, resulting in complex structure and increased cost. There are many water resistance as the measurement principle, but most sensors on the market cannot measure continuously, and the measured height value drifts greatly with the change of water quality. Contents of the invention [0004] The purpose of the present invention is to solve the deficiencies of the above technical problems, to provide a resistive w...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many types of water level sensors on the market, such as ultrasonic principle, capacitance principle, thermal resistance, reed switch, etc., but: the sensor that can measure continuously is expensive; or it is non-continuous measurement, and the accuracy is low

To achieve measurement accuracy with fixed grid points, more measurement grid points need to be installed, resulting in complex structure and increased cost

There are many measurement principles based on water resistance, but most sensors on the market cannot measure continuously, and the measured height value drifts greatly with changes in water quality

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