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Top3 Liquid level sensor

What is a water level sensor?

A water level sensor is a device for measuring too high or too low a liquid level in a fixed vessel. According to the method of measuring liquid level, it can be divided into contact type and non-contact type. The input type water level transmitter is a contact measurement that converts the level height into an electrical signal output. It is a widely used water level transmitter at present.

Where to use water level sensors?

The use of water level sensors includes the following applications:

1.Pools and tanks

2.The water level of rivers and lakes

3.Ocean water level surveyAcid-base liquid

4.Oil level measurement of oil truck and mailbox

5.Swimming pool water level control

6.Tsunami warning and sea level monitoring

7.Water level control of cooling tower

8.Water level control of sewage pump

9.Remote monitoring of liquid level

What are the benefits of water level sensors?

1, simple structure: no activity or elastic components, high reliability, no need for regular maintenance in the process of use. The operation is simple and convenient.
2, easy to install: when using, first connect one end of the wire correctly, and then put the other end of the water level probe into the solution to be tested.

3.Measuring range optional: can measure the water level within 1-200 meters, can also customize other measuring range.
4, a wide range of applications: suitable for high temperature and high pressure, strong corrosion, high pollution and other media level measurement. An electronic water gauge built on the riverbank can be used for tide monitoring.
5, the measurement medium range is wide: from water, oil to high viscosity paste can be measured with high precision, and the temperature compensation range is wide, not affected by the foaming, deposition and electrical characteristics of the measured medium.
6, long service life: general liquid level sensor in normal environment can be used for 4-5 years, in harsh environment can also be used for 2-3 years.
7, powerful function: can be directly connected to the digital display table real-time display value, can also be connected to a variety of controllers to set the upper and lower limits to control the amount of water in the container.
8, accurate measurement: built-in high-quality sensor, high sensitivity, fast response speed, accurately reflect the flow or static liquid level subtle changes, high measurement accuracy.
9, a wide variety of: the level sensor has input type, straight rod type, flange type, thread type, induction type, screw in type, float type and other structure design. It can meet the measurement needs of various places.

Ultrasonic level sensor-water level monitoring system-water level meter

The ultrasonic level sensor is a distance measuring instrument developed based on the principle of ultrasonic waves. It uses the transmitted sound wave pulse to measure the time at the receiving end to calculate the distance. The ultrasonic level gauge is made of ABS material, is light in weight, does not require maintenance and on-site calibration, and can be used in conjunction with a computer, data collector or other RS485-compliant collection equipment.


(1)No moving parts, low wear and long service life.
(2)Engineering plastic shell, light and handy design, easy to carry.
(3)The filtering algorithm makes the measurement more accurate.
(4)LED display, high-definition data display, easy to read at a glance.
(5)Expert mode/simple mode: In the expert mode, other functions can be set; in the easy mode, the product configuration can be quickly completed by 2-step setting and put into use.

Water level sensor-smart liquid level sensor probe

Drop-in level gauge, Drop-in liquid level sensor, liquid level transmitter and water level meter adopt imported silicon wafer diffusion silicon core and stainless steel full seal welding structure design, with good moisture-proof performance and strong medium compatibility, which can be used in many industrial occasions with weak corrosive medium, and can be immersed in water for a long time.


(1) Anti-interference and good stability to ensure correct signal transmission
Rectangular circuit board design can be used for regular wiring and installation of circuit components on the circuit board. The limited space can be effectively used for heat dissipation, and the stability, anti-interference and service life of circuit components can be guaranteed.
(2) 45° inclined plane pressure hole
The 45° cut surface design effectively reduces the abrasion of the shell by impurities at the bottom of the liquid, and allows the pressure at the bottom of the liquid to smoothly enter the pressure hole. Punching-resistant design pressure hole, diameter 3MM, anti-clogging, four-hole multi-directional sensing pressure.
(3) 304 stainless steel shell
As a widely used steel, 304 stainless steel has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; it has good hot workability such as stamping and bending, and is corrosion resistant in the atmosphere.
(4) Multiple transmission methods
Support 4-20mA (default), RS485 (optional), NB-IOT can be customized according to needs
(5) Laser marking
Powerful manufacturers all use laser marking, which can imprint the sensor information on the surface of the shell for a long time without falling off.
(6) Waterproof PVC lead
This sensor uses high polymer PVC waterproof lead. The material is thick, wear-resistant, aging-resistant, and has a long life.

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