Application of externally attached ultrasonic level gauge

Storage tanks are commonly used storage equipment in petrochemical enterprises. According to the shape of tanks, there are mainly horizontal tanks, vertical tanks and spherical tanks. By measuring the temperature, pressure, liquid level, density and other parameters of the liquid medium in the storage tank, the volume and mass storage of the liquid in the storage tank can be calculated. The characteristics of the medium and the process conditions are also different. Therefore, only from the actual situation, the reasonable selection of the liquid level gauge and the design of the liquid level measurement solution can optimize the use effect. Storage tank level measurement technology There are many liquid level measurement technologies currently used in storage tanks. According to the measurement method, it can be divided into contact type and non-contact type. Contact measurement methods mainly include manual detection ruler, float type steel belt level gauge, servo type level gauge, static pressure type level gauge, magnetostrictive level gauge, radio frequency admittance level gauge, etc. Non-contact measurement methods mainly include externally attached ultrasonic level gauges, radar level gauges, etc. Among them, the commonly used liquid level measurement methods on the market are: magnetostrictive liquid level gauge, servo liquid level gauge, radar liquid level gauge, static pressure liquid level gauge, etc. As a high-precision liquid level measurement method, the externally attached ultrasonic liquid level gauge is more and more recognized and accepted by customers because of its large range, convenient installation and low maintenance. It also makes many ordinary users. Also began to use the externally attached ultrasonic level gauge as the liquid level measurement scheme of the storage tank. The measurement principle of the externally attached ultrasonic level gauge: the use of non-contact ultrasonic waves. Features: no holes, continuous and accurate measurement outside the tank, completely non-contact measurement, unlimited pressure in the container, can measure flammable, explosive, highly corrosive, highly toxic, high cleanliness, self-aggregation and other media. Easy to install, no need for fire, no need to stop production. Externally attached ultrasonic liquid level gauge application The externally attached ultrasonic liquid level gauge adopts a sensor attached, non-contact measurement method, which can continuously measure the liquid level outside the tank, without opening the tank body, and can be installed without stopping production, especially suitable for old Product replacement. The externally attached ultrasonic level gauge is especially suitable for various toxic substances, strong acids, strong alkalis and various pure liquids (liquefied gas, liquid chlorine, liquid ammonia, propylene, vinyl chloride, dimethyl ether, butadiene, etc.) in airtight containers. Accurate non-contact measurement of the liquid level of hydrofluoric acid, etc., the instrument adopts explosion-proof design, which can be used in occasions requiring explosion-proof. The working principle of the externally attached ultrasonic liquid level gauge The externally attached ultrasonic liquid level gauge adopts the principle of sonar ranging, which overcomes the influence of the tank wall on the ultrasonic signal, and adopts advanced digital signal processing technology, which can truly realize non-contact, high-precision To measure the liquid level in the tank, the ultrasonic probe is attached to the bottom of the storage tank, and the emitted ultrasonic wave penetrates the tank wall, reaches the liquid-gas junction and returns to the echo, and then calculates the height of the liquid level through the return time and sound speed. The externally attached liquid level gauge can output 4-20mA standard signal or output the measurement results to the upper computer through RS-485, HART, Modbus and other remote interfaces to meet the automatic control of the system. Features of externally attached ultrasonic level gauge ●Standard two-wire system ●Non-contact measurement ●High precision and sensitive response ●Wide application: It can be used for the measurement of highly toxic, strong corrosive, high pressure, and flammable and explosive media , Applicable to various complex working conditions, ● Easy installation and simple operation ● Installation can stop production, clear tanks, and no fire ● Reliable work, stable performance ● Maintenance-free ● Strong anti-interference ability

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