Level measuring devices provider from China: Radar level measurement represents a shift in the field of instrumentation. This state-of-the-art technology utilizes radar waves to determine levels of liquids or solids, in vessels. Unlike methods that require contact radar operates non invasively by emitting microwaves and carefully analyzing the reflected signals. The key radar level measurement principle here is time of flight measurement- accurately measuring the time it takes for a radar pulse to travel from a transmitter, bounce off the surface of the material and return to a receiver. This temporal data is then converted into an accurate level reading. See even more details on level measuring instruments.
The radar level gauge works by electromagnetic waves. Its working principle is to measure the specific liquid level by transmitting electromagnetic waves to the measured target. After the electromagnetic waves are emitted, they are reflected by the medium. For the radar level gauge, its key function is to ensure that it can transmit magnetrol guided wave radar signals smoothly. In our industrial production site, interference often occurs, so which interference sources will affect the measurement of the radar level gauge? let’s see.
There is AC interference and the voltage is high. For example, for the radar level meter used in the production line, the power supply requirement is 24VDC (typical value), but in the on-site measurement, it is found that the power supply is displayed as 27.2V, which is significantly higher than 24VDC, resulting in a large measurement result and even a radar level meter. crash phenomenon. The installation position of the radar level meter is incorrect, which leads to deviations in the measurement. For example, the accumulation of aggregates in the transfer bin is a “mountain”-shaped cone, but only one radar level meter is installed near the discharge port of the return belt. , the installation position is too close to the discharge opening of the return belt, and at the same time, it is too far from the discharge opening of the feeding belt on both sides. Just below the radar level meter is the drop point of the return belt. If the distance is too close, the aggregate in the falling process will interfere with the radar level meter and form false reflections.
If the radar level meter is unreasonably selected, the interference echo cannot be handled well, and the reliability of the instrument will be reduced. Therefore, the following factors should be considered when selecting a radar level meter: Conductivity and dielectric constant of the measured medium. The measured medium is a conductive liquid or a liquid with a dielectric constant above 4. Generally, a common radar is selected. Liquids with small dielectric constants (dielectric constants below 2) and some conductive solids often use precision radars or guided wave radars due to the large amount of interference echoes.
What are the characteristics of radar water level meter? All measuring components are designed in an integrated manner, and there is no mechanical wear during measurement. Because the measurement is a non-contact measurement, it is not affected by the physical properties such as the density and concentration of the water body, it is not easy to be washed away by floods, has a long service life and is easy to maintain. The advantages of the radar level transmitter are obvious. The editor warmly reminds that to choose the right one, it is still necessary to meet your own situation.
Any appreciable gain in boiler feedwater achieved through the process reduces the amount of energy (fuel) required at the boiler— in fact, every 10.8°F (6°C) rise in boiler feedwater amounts to a one percent savings in fuel cost. Inadequate level controls can inhibit the deaeration process (level too high) or reduce/shutdown feedwater flow to the boiler (level too low). The former affects hardware longevity and efficiency, while the latter risks production losses and possible damage to pumps. Discover extra info at https://www.kaidi86.com/.
In the process of cement production, material level detection and material level alarm control play an important role from mining and crushing to storage and packing of finished cement. But because of the complex working conditions of cement plant, radar level meter has no small difficulty in measuring. Today, I would like to talk with you about specific difficulties and solutions. First cement plant material for measurement in the dust under the condition of particularly large, especially some pneumatic feed bin, involves the kinds of materials, material particle size is differ, dielectric constant is different also, such as broken limestone, raw meal, clinker, fly ash, coal, cement, the level of the bunker, it is very difficult to accurately measure Especially fly ash bin with low dielectric constant.
KAIDI level transmitter manufacturer is dedicated in providing complete customized solutions for a wide range of industrial automation process applications – in material level, liquid flow, pressure and temperature. We are constantly developing and innovating, our core vision – “to provide solutions that exceed customers’ expectations. In 2012, the company successfully expanded its operations both locally and internationally, achieving global success and recognition for quality fork type level switch, magnetic level gauge products and services. Our Radar Level Meter has a range of up to 150 meters, frequency up to 120GHz and an accuracy of ±1mm, which can cope with various complex measurement conditions.
Under many operating conditions, ultrasonic level meter and radar level meter are commonly used. Some users are very entangled in the choice of these two level meter and do not know how to choose. Today, let’s talk about the principles and selection principles of these two types of level meter . Principle and selection principle of ultrasonic level meter. Working principle: The ultrasonic pulse probe emits a beam of ultrasonic pulses to the measured medium, and the sound wave is reflected by the liquid surface. The distance between the liquid levels is measured by measuring the time difference between the emission and reflection of the sound waves. Since the ultrasonic level gauge is not a liquid, it can be used to measure corrosive, non-volatile and non-foaming places.
When the cover above the closed metal cover is opened, the false signal disappears, the overall noise line decreases, and the echo curve decreases. After analysis, it is determined that the closed metal cover is the main cause of false signals, the radar level meter antenna is made of plastic, and the radar waves emitted by the antenna leak into the external environment. The closed metal shield is used to cover the instrument, and the leaked radar wave signal is received by the antenna after several reflections inside the shield, generating a false level. Therefore, the metal shield was modified to a ring-shaped non-sealed shield at a later stage, and the radar level meter jump was significantly reduced.