Photoelectric liquid level sensor

Abstract

The invention relates to a photoelectric liquid level sensor in the field of photo-electricity. The photoelectric liquid level sensor comprises a shell; a sealing cover plate is arranged at the upper end of the shell, and a connecting flange is arranged at the lower end of the shell; a partition plate for partitioning the inner part of the shell into a first detecting chamber and a second detecting chamber is arranged in the shell; a first photoelectric transmitter, a first photoelectric receiver and a first reflector are arranged in the first detecting chamber; a second photoelectric transmitter, a second photoelectric receiver and a second reflector are arranged in the second detecting chamber; the first reflector is lower than the second reflector; the first photoelectric transmitter, the first photoelectric receiver, the second photoelectric transmitter and the second photoelectric receiver are electrically connected with a controller outside the shell; and the controller is connected with an alerter. Because movable components do not exist in the shell, mechanical abrasion is avoided, frequent maintenance is not required, and the service life is prolonged; and rays emitted by the photoelectric transmitters are reflected by the reflectors, so that the sensor can have high accuracy under high-temperature and high-pressure environments.

Description

technical field [0001] The invention relates to the field of photoelectric technology, in particular to a liquid level photoelectric sensor in the field of photoelectricity. Background technique [0002] Existing various liquid level photoelectric sensors are generally float-type liquid level photoelectric sensors. The float will rise or fall with the change of liquid level, and the measurement accuracy is not high. Due to mechanical wear and tear, its service life is short and its performance It will decrease accordingly, especially in the environment of high temperature and high pressure, the movable float will be violently impacted by the liquid, and its measurement accuracy will directly affect the safety of work. The float is easily damaged and requires frequent maintenance, which increases the maintenance cost , and frequent maintenance needs to stop the work of the equipment, thus reducing the work efficiency. Contents of the invention [0003] Aiming at the above-...

AI Technical Summary

Problems solved by technology

[0002] Existing various liquid level photoelectric sensors are generally float-type liquid level photoelectric sensors. The float will rise or fall with the change of liquid level, and the measurement accuracy is not high. Due to mechanical wear and tear, its service life is short and its performance It will decrease accordingly, especially in the environment of high temperature and high pressure, the movable float will be violently impacted by the liquid, and its measurement accuracy will directly affect the safety of work. The float is easily damaged and requires frequent maintenance, which increases the maintenance cost , and frequent maintenance requires stopping the work of the equipment, thus reducing work efficiency

Images