The editor will introduce to you a comparative analysis of the advantages and disadvantages of several common liquid level gauges, hoping to provide assistance to you in the future.

Float level gauge——It is a method of measuring liquid level based on the principle of buoyancy. Usually, the height of the liquid level can be visually read by the observer through the combination of a floating ball and a scale.

Advantages: Able to read quickly and intuitively; Low price; Easy to install.

Disadvantages: Low accuracy; The installation is greatly limited by the shape and structure of the container; Not suitable for use in highly corrosive and hazardous media; Unable to achieve remote transmission and adjustment.

Magnetic flap level gauge——It relies on a magnetic float installed inside the container to drive the magnetic flip plate outside the container to flip and achieve signal conversion and liquid level display.

Advantages: Able to read quickly and intuitively; Low price; It can achieve remote transmission and adjustment.

Disadvantages: Low accuracy; Installation is complex; Range limitation; The installation volume is relatively large.

Input type liquid level gauge

The main advantages are: high measurement accuracy; Easy installation; The signal can be remotely transmitted; It is possible to resist corrosion from various media by selecting different materials; Suitable for explosion-proof applications; The price is moderate.

The disadvantage is that the measurement signal needs to be converted; Unable to measure the temperature of high-temperature media exceeding 125 ℃; The density of the measuring medium must be uniform and consistent. Comparison of several liquid level measurement methods. In the industrial field, in order to measure liquid level, there are many other methods and principles besides the static pressure liquid level measurement of the input level gauge.

Capacitive liquid level sensor——It is to measure the height of the liquid surface by using the change in capacitance value between the two plates of the capacitor.

Advantages: Small size, easy to achieve remote transmission and adjustment; Suitable for corrosive and high-pressure media.

Disadvantage: The dielectric constant of the medium and the upper part of the liquid surface must be kept constant for accurate measurement; The measurement range is limited by the length of the metal rod; High requirements for container materials; The tested medium has conductivity.

radar level gauge——It is to convert the position of the liquid/object surface by detecting the information reflected by the liquid surface of the microwave (electromagnetic wave with a short wavelength) emitted by itself.

Advantages: It can measure the liquid level inside pressure vessels and ignore the effects of high temperature, high pressure, scaling, and condensation; High precision; No direct contact with the medium; Strong corrosion resistance; Can be used in a vacuum environment; Easy to install.

Disadvantages: Expensive price; Affected by the geometric structure and material properties of the container; Easy to be interfered by electromagnetic waves.

Ultrasonic level gauge——It is used to convert the position of the liquid/object surface by detecting the signal of the ultrasonic waves emitted by itself after being reflected by the liquid surface.

Advantages: No direct contact with the medium; Strong corrosion resistance; High precision; Easy to install.

Disadvantages: The price is relatively expensive; Ultrasonic waves are greatly affected by the gas composition of the transmission medium; Greatly influenced by the geometric structure characteristics of the container; Not suitable for media with bubbles or suspended solids; Easy to be interfered by electromagnetic waves.

Jiangsu Jianheng Instrument, as a professional manufacturer of liquid level instruments, level instruments, and level instruments, has always adhered to the research and development of new technologies and products. Summarize the experience of production practice over the years, actively communicate and exchange with the flow field at home and abroad, strive to develop various flow measurement products, and form a large-scale, systematic, and diversified production pattern.