YHCSB series ultrasonic level switch a working principle 1, reflecting non-contact ultrasonic level switch sends a high frequency ultrasonic pulse, when empty this high-frequency pulse propagation in the container wall, forming multiple reflections; full tank large part of the ultrasonic sound waves directly into the liquid only a small reflection. By 'self-learning' key to get blank material level switch, at full feed state since learning curve echo. When measuring the echo curve level switch with self-learning echo curve analysis and comparison, to determine the material level status, and gives status output. 2, the echo level switch in the reflective mode of Shanghai Instrument Ultrasonic level switch, when the container viscous media (such as: grease) produces wall, emit ultrasonic wall dielectric absorption is proof ultrasonic level switch , the reflected wave decreased, and in severe no reflection wave. In this case, it requires the use of echo-type mode. Echo reflected signal receiver opposite tank wall, so the impact is not material wall. Second, the main characteristics due to the non-contact measurement technology, the overall structure of stainless steel, so that the switch has: no contact with the measured medium, very hygienic; containers for a variety of materials: metals, ceramics, glass, plastic and the like; vessel pressure nothing to do; easy installation; holder container welded or bonded, and by three-jaw ring fixture switch. I. Introduction built-in temperature compensation, adaptive power, using a number of self-developed patented technology, with a new signal processing technology, greatly improve the measurement accuracy of the instrument, to get a clear interference echo suppression. Metal alloy shell, beautiful appearance ultrasonic liquid level switch, and with good protection. Instruments using high-temperature industrial isolated power ultrasonic level switch, all of the input and output lines have lightning protection, overvoltage, overcurrent protection circuit. Installation, maintenance, calibration is simple, according to the site installation conditions are selected or flange mounting bracket can be integrally mounted or split installation environment according to the site selection. It can be used for all kinds of acid, alkali, corrosion, high temperature explosion-proof environment. Second, the technical parameters ◇ Measuring range: 0 ~ 3m, 0 ~ 6m, 0 ~ 10m, 0 ~ 15m ◇ blind: 0.25m ~ 0.6m ◇ Accuracy: 0.25 ~ 0.5% ◇ Resolution: 1mm ◇ direction angle: 4 ° ~ 6 ° (full angle) ◇ pressure: 4 atm ◇ Display: LCD display comes with the liquid level or spatial distance ◇ digital output: RS485 interfaces, ModBUS protocol or custom (four-wire) ◇ analog output: 4 ~ 20mA ◇ Switch: 4 AC220V / 3A (four-wire) ◇ Power supply: four-wire-wire DC24V 120mA DC24V ◇ Ambient temperature: -20 ℃ ~ + 60 ℃ ◇ Protection class: IP67 ◇ Installation: Bracket or flange mounting ◇ Housing: die-cast aluminum explosion-proof enclosure ◇ separation distance: less than 50 m domestic ultrasonic liquid level switches, ultrasonic level switch, Jiangsu, Shanghai, Jiangsu and Shanghai instrument provided by the Instrument Automation Instrumentation Co., Ltd.. Jiangsu and Shanghai Instrument Automation Instrumentation Co., Ltd. (www.xhyhck.cn) strong, credible, in Yancheng display instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jiangsu and Shanghai into the brilliant instrument and you work for a better future!