Throw-in type liquid level transmitter

Abstract

A throw-in type liquid level transmitter disclosed by the present invention comprises a detection assembly, a display and a waterproof cable used for connecting the detection assembly and the display, a cable core penetrates through the interior of the waterproof cable, the detection assembly comprises an amplification circuit, a circuit compensation plate and a pressure sensor, the cable core is electrically connected with the amplification circuit, and the circuit compensation plate is electrically connected with the pressure sensor. The amplifying circuit is electrically connected with the circuit compensation plate, the circuit compensation plate is electrically connected with the pressure sensor, and a lower sealing sleeve and an upper sealing sleeve which are used for protecting the detection assembly are arranged on the outer side of the detection assembly. The device can be protected through the cable protection cover, the sealing rubber block and the first sealing ring, the water inlet through hole of the device can be cleaned through the anti-blocking assembly, blocking is prevented, a power source does not need to be added, the anti-blocking assembly can be driven to move under the action of water flow, use is convenient, and the manufacturing cost is greatly saved.

Description

technical field [0001] The invention relates to the field of liquid level transmitters, in particular to a submerged liquid level transmitter. Background technique [0002] The liquid level transmitter is composed of a stable measuring mechanism and a microprocessor circuit. When the static pressure reacting to the liquid level acts on the measuring module through the isolation diaphragm, the measuring module will be slightly deformed, and the deformation will be converted into an electrical signal by the detection circuit. , and obtain the liquid level data through calculation. The submerged liquid level transmitter is based on the principle that the static pressure of the measured liquid is proportional to the height of the liquid, and uses the piezoresistive effect of diffused silicon or ceramic sensitive elements to convert the static pressure into electrical The signal, after temperature compensation and linear correction, is converted into a standard current signal out...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a drop-in liquid level transmitter, the device can be protected by the cable protective cover, the sealing rubber block and the first sealing ring, and the water inlet hole of the device can be cleaned by the anti-blocking component. To prevent clogging, no need to add a power source, the effect of water flow can be used to drive the anti-blocking components to move, which is easy to use and greatly saves production costs. The liquid inlet hole enters the inside of the device to detect the pressure, and some impurities in the liquid to be tested will settle to the bottom of the liquid to be tested, which will block the liquid inlet hole on the detection component, resulting in incorrect detection. Accurate phenomenon, and it is not convenient to protect the device

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