The principle of ultrasound transmission in the medium is known, and if conditions such as medium pressure, temperature, density, humidity are certain, ultrasound transmission is a constant in the medium. Thus, when the ultrasound is detected from the time of launch to the time required for surface reflection to be received, the trajectories through which the ultrasound passes can be converted, i. E. Data from the liquid level. The ultrasound has a blind zone and must be installed to calculate the distance between the pre-positioning of the sensor and the measurement of the liquid. The radar bitometer uses the working mode of launch-reflection-receiving. The antennas of the radar liquid meter emit electromagnetic waves that are reflected on the surface of the object and then received by the antenna, which are proportional to the distance between the time of launch and receipt and the surface of the liquid as follows: d = the distance from the surface of the liquid, c — the speed of light, t — the time of operation of the electromagnetic wave, the time of the pulse of the radar fluid, while the rate of transmission of the magnetic wave is constant, can be calculated to the distance from the surface to the radar antenna, so that the liquid position of the surface is known. Application of preservative materials to enhance the durability of ultrasound fluids in adverse environments. The method of operation of the high-accuracy ultrasonic fluid differential of gold
The ultrasound fluids are monitors measuring the height of the liquid, the height of the tank and the location of the material. The instrument itself may be based on a two-, three- or four-line technology, with two-line: power being shared with signal output; three-line: a three-chip cable being used when a direct 24-v circuit is used, and a three-chip cable being shared between the negative end of the power supply and the negative end of the signal output; and four-line: a four-chip cable being used when a 220-v exchange of power is used, or when a direct 24-v circuit is required to be completely separated from the signal output circuit. Direct flow or communication power with 4-20 madc, high-low-bit switch output. The hangzhou tsl300n ultrasonic fluid range is designed to produce energy-saving designs, and the ultrasonic fluid range is much less functional than the traditional liquid-level measurement equipment。
On-site conditions: in any of the following cases, care is taken that foam-containing liquids/solids are subject to strong voltage, strong currents, strong electromagnetic interference, as far as possible, high voltage, high currents and strong electromagnetic interference, wind and sun exposure, strong vibrations, volatile liquids and sites with large amounts of water vapour, crystall liquids, carefully selected use in the above-mentioned field environment, reduced numerical accuracy of measurements, potentially unstable data, and the use of ultrasound fluids is not generally recommended. Product characteristics: autopower adjustment, gain control, temperature compensation. Physico-sealed probe, ip68 protection level, non-water intake, enhanced useful life。
The accuracy and temperature are considered together because in air the temperature measurement error of 1 °c affects sound speed of 0. 6 m/s, 20 °c, with an atmospheric pressure of approximately 340 m/s. Thus, it can be calculated that the impact on the measurement error is 0. 17 per cent, i. E. If the temperature measurement error is 3°c, the location measurement error exceeds the nominal range of 0. 5 per cent for most plants. The actual accuracy of 0. 5 per cent is therefore directed at the pressure of temperature. High and low temperatures can lead to measurements exceeding 0. 5 per cent accuracy. When there is a temperature gradient and the temperature changes fast, the measurement error increases. It is also the gaseous component that has a significant impact on the measurement accuracy. This means that in some volatile liquids, the volatilization of liquids causes changes in the air composition, followed by measurement errors caused by changes in the acoustic speed of gases. The differential has a high-precision temperature compensation function to ensure accuracy of measurements at different temperatures。
The principle of hypersonic positionometers: the ultrasonic positionometer is installed on the upper part of the container and, under the control of the electronic unit, the probes launch an ultrasonic pulse towards the object being detected. The acoustic waves are reflected on the surface of the object, partially reflecting the echoes are received by the probe and converted to telecommunications. From ultrasound to re-acceptance, the time is proportional to the distance from the probe to the object being detected. The electronic units detect the time and calculate the measured distance based on the known acoustic speed. The distance from the probe to the bottom of the tank - the distance from the probe to the liquid position = the actual liquid or physical altitude. Conversion of liquid level height to 4~20ma current signal, 1-5v voltage signal output. Or communication through 485, h a r t, g p r s to the control centre. Since the temperature has a significant effect on the acoustic velocity, the instrument should measure the ambient temperature and the acoustic velocity has been modified. The principles for the measurement of hypersonics. The hypersonic fluid range is non-contact measurement and applies to various complex liquid environments. Li shui's blast-proof ultrasound fluid range
An ultrasonic fluid range can be adapted to the measurement requirements of different liquid or solid materials. The method of operation of the high-accuracy ultrasonic fluid differential of gold
Professional maintenance is analysed mainly on the basis of the characteristics of the instrument and the conditions in which it is installed: a: sewage plants typically use simple ultrasonic fluid gauges to measure the difference in the water level or the fluid level of the coil, which is generally less needed. Attention is drawn to the fact that in the summer, there is no condensation of the head, which can easily cause ultrasonic loss, i. E., failure to detect echoes, which can cause alarms, which can lead to the output of broken currents, which is relatively simple, generally clean up, drying the walls, looking at changes in the measurement values; b: in the case of electric plants or some other place to measure the water level of the tank, attention is given to the fact that ultrasonic waves are not generally used to measure the internal fluid level of the tank, to consider the absence of vapour, which is generally not applied at water temperatures above 60 degrees or above 80 degrees, and in the case of steam thickness, which is not capable of detection of a high cryometric flow, which is the case of a high ice, which is, which is, which is, and which is, and is the method of operation of the high-accuracy ultrasonic fluid differential of gold
