Water immersion sensor

Abstract

The invention discloses a water immersion sensor. The water immersion sensor comprises a shell, the top of the shell is fixedly connected with a flange through a cross outer hexagon three-combinationscrew, the top of the flange is fixedly connected with a stuffing box, an upper cavity and a lower cavity are formed in the shell, and the bottom of the inner wall of the upper cavity is fixedly connected with a sensor assembly through a cross plate screw. Immersion sensor, two-point analog quantity control current signals can be realized; a current signal is controlled to be 4mA in a normal state; an alarm state controls a current signal to be 20mA; whether the immersion sensor works normally can be judged conveniently; the loop has a basic current signal to judge that the immersion sensor works normally; no basic current signal exists or exceeds the range, it can be judged that the immersion sensor is abnormal, the function of water level alarming is achieved, and the immersion sensor iswidely applied to ocean ships and other industrial equipment and used for alarming and controlling the liquid level of media such as lubricating oil, fuel oil, waste oil, seawater, fresh water and sewage in a cabin.

Description

technical field [0001] The invention relates to the technical field of industrial equipment, in particular to a water immersion sensor. Background technique [0002] The water immersion sensor is based on the principle of liquid conduction. It uses electrodes to detect whether there is water, and then uses the sensor to convert it into a dry contact output. It is usually normally open. If you want to be normally closed, you need to book in advance. The scheduled time is 3 days. The water immersion sensor It is divided into contact type water immersion detector and non-contact type water immersion detector. The contact type water immersion detector uses the principle of liquid conduction for detection. Normally, the two poles of the probe are insulated by air; Contact signal, when the probe is immersed in water at a height of about 1 mm, an alarm signal will be generated. This product adopts a heavy-duty design, which is easy to deploy. The non-contact water immersion detecto...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a water immersion sensor, which solves the problem that the existing water immersion sensor adopting a two-position control method cannot judge whether the sensor is in a normal state during operation, has certain limitations, and cannot realize the water level alarm The problem

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