Ultrasonic level meter selection guidelines to choose which has the function of automatic power control ultrasonic level meter;Choose ultrasonic level meter with larger range;Add plastic tube into the liquid to measure the liquid level in the plastic tube. Two-wire ultrasonic level gauge is different from three-wire ultrasonic level gauge

The power supply (DC24v) and signal output (DC4-20MA) of the two-wire ultrasonic level gauge share the same circuit. Only two lines can be used, which is the standard transmitter form. The disadvantage is that the transmitting power is slightly weak.Three-wire ultrasonic level meter is actually four-wire system. Its power supply (DC24v) is separated from the signal output (DC4-20MA) circuit. Two lines are used for each circuit, and three lines are usually used when the negative ends are connected together.Its advantage is the large transmitting power.Blind area of ultrasonic level gauge

When the ultrasonic level meter transmits the ultrasonic pulse, it cannot detect the reflected echo at the same time.Since the transmitted ultrasonic pulse has a certain time width, and the sensor still has residual vibration after the transmission of ultrasonic wave, the reflected echo cannot be detected during this period. Therefore, a small distance from the probe surface downward cannot be detected normally, which is called the blind area.If the measured ZUI high object level enters the blind area, the instrument will not be detected correctly and error will occur.If necessary, the object level meter can be raised and installed.In the selection of engineering design, ZUI should pay attention to the problems

To choose a good installation location, design the appropriate installation interface.The installation position should be as smooth and flat as possible. At the same time, it should be far away from the escalator, feed port and discharge port. It should be as far away from the container wall as possible and away from the agitator.It is required that the opening size of the installation interface should be large enough. When installing the flange, the length of the joint under the flange should be designed reasonably. For the level meter of the 10-meter and 12-meter range of our company, the length of the joint should not be more than 15cm, and choose the flange mouth above DN80.

For level gauges with ranges of 15, 20, 30 and 40 meters, the connection length shall not be greater than 20cm;Select flange ports above DN200.There is no requirement on the length of the pipe for the level gauge with a range below 8 meters. It can be properly designed to eliminate the influence of the blind area, and the flange mouth above DN65 can be selected.There is no requirement on the length of the pipe for the level gauge with a range below 8 meters. It can be properly designed to eliminate the influence of the blind area, and the flange mouth above DN65 can be selected.Ultrasonic liquid level gauge is the ultrasonic liquid level gauge and ultrasonic material level gauge collectively

When used to measure liquid level, it is often called an ultrasonic level gauge.

When used for measuring solid level, it is usually called ultrasonic level meter ultrasonic liquid level meter

For the selection of ultrasonic level gauge there are a lot of considerations, there are a lot of preparation.There is a lot of knowledge about the whole part of the ultrasonic level meter.For different types of ultrasonic level gauge is also not the same price.1. Understand the measured media:

A) Liquid;Objects;Dust;Whether it is regular;Liquid and plane objects can be used with the actual range, the other to increase 1-2 specifications optional, in addition, our company's existing two procedures, one is to measure the liquid level, the other is specifically for the object (material) level of the program, please explain when ordering

B) Whether anti-corrosion is necessary;Some chemicals require an anticorrosive probe (Ptfe)

C) Whether there are volatile gases (usually chemicals);Some occasions of gas volatilization to the probe, will affect the ultrasonic sound speed, so that sometimes there will be measurement error.So you need to know what gases;

D) Whether there is fog: In the treatment method, 4F film is added at the bottom of the probe to prevent water vapor from forming in the probe. The film blind area with 4F will be larger, generally 40CM2.Learn about jars:

A) Liquid level variation range;Zui high liquid level and zero, that is, the corresponding 4-20mA, can be set at will here

B) The height of the jar itself;

C) Distance from the installation position of caliber and meter to the tank wall;There is a problem with the beam Angle, which is usually 8-10 degrees

D) Whether it is enclosed;

E) With or without pressure;Can withstand 0.3MPA

F) Temperature: it depends on the actual temperature affecting the table, -25-80 degrees.3. Understand the site installation requirements:

A) Blind area: 20-60cm depends on the measuring range. It is recommended to set the blind area as 40CM for installation

B) a body or body

C) Several wires

D) The standard length of the cable (split) is 10M, and the excess part is 5 yuan per meter

E) Installation method: Flange specifications, etc

4. Note: The large range of the integrated (CY-301) ZUI is 20m, that of the two-wire system (CY-3022) is 15m, and that of the other split type is 50m under the liquid level mode.

Related products: radar level meter, ultrasonic flow meter