HS-2000 intelligent external ultrasonic liquid level meter can continuously measure the liquid level outside the tank, without opening the tank and stopping production during installation, especially suitable for the replacement of old products. HS-2000 intelligent external ultrasonic liquid level meter is especially suitable for the liquid level measurement of various toxic substances, strong acids, strong alkalis and various pure liquids in closed containers. The instrument is of explosion-proof design and can also be used in occasions requiring explosion-proof.

1. Working Principle

HS-2000 external ultrasonic liquid level meter adopts the echo ranging principle of radar and combines the digital signal processing technology to overcome the influence of the tank wall and measure the liquid level in the tank with high accuracy and non-contact. The liquid level height value is accurate, and there is no need for CPU to analyze, compare and judge. After the CPU obtains the liquid level value, it can send it to NVRAM for storage and digital display. In addition, the instrument can output 4 ~ 20mA standard signal or output the measurement results to the upper computer (or secondary meter) through RS-485 interface.

2. Features

• Non contact measurement: an ideal measurement method in industrial instruments

• High precision and sensitive response

• Wide range of applications: it can be used for measurement of various liquid media in toxic, highly corrosive, high pressure, various complex working conditions and inert gas environment

• Easy installation and simple operation

• Installation can be carried out without shutdown, tank cleaning and hot work

• The instrument works reliably and has stable performance

• Long service life

• Intelligent and electronic instrument

• Strong anti-interference ability

3. Application Condition

• Medium Purity

       The liquid shall not be filled with dense bubbles

       A large amount of solids, such as crystals, cannot be suspended in the liquid

       A large amount of sediment cannot be deposited in the liquid

• Medium Viscosity

       Dynamic viscosity < 10mPaS;

       When 10mPaS < dynamic viscosity < 30mPaS, the instrument range may be reduced;

       When the dynamic viscosity is > 30mPaS, it cannot be measured

       Note: As the temperature increases, the viscosity decreases, and most of the high viscosity liquids are more obviously           affected by the temperature. Therefore, when measuring the viscosity liquids, attention should be paid to the influence           of the liquid temperature.

• Tank

       Material: the container wall where the measuring probe is installed shall be made of hard materials that can transmit signals well. Examples: carbon steel, stainless steel, various hard metals, FRP, epoxy resin, hard plastics, ceramics, glass, hard rubber and other materials or their composites. If the container wall where the measuring probe is installed is made of multi-layer materials, the layers shall be in close contact without bubbles or gas interlayer, and the inner and outer surfaces of the container wall shall be flat.

       Wall thickness: 2 ~ 70mm

       Tank type: spherical tank, horizontal tank, tank, vertical tank, etc 

Below is the using case for HF measurement: