The development history of externally mounted liquid level gauge

The externally attached liquid level gauge is a new type of instrument that uses the principle of sonar distance measurement to measure the liquid level of the storage tank. Its characteristics are that it can truly realize non-contact measurement and online installation. As early as the 1970s, there were related papers and instrument models. At that time, it was envisaged to measure the liquid fuel of rockets. However, due to the development level of piezoelectric ceramics and computer processors at that time, this technology was finally not available. Industrial products. In the 1990s, scholars from Northwestern Polytechnical University began to conduct relevant theoretical research. The domestic externally-mounted liquid level gauge was introduced at the beginning of this century, and it was gradually applied and promoted in the market. China's externally attached liquid level gauge products are currently at the forefront of the world in the field of research and application, so the current level of domestic research and development basically represents the global level. However, the research and development level of some domestic manufacturers is relatively low, and the product performance is relatively poor, which is not enough to support the externally mounted liquid level gauge to become the mainstream liquid level gauge product. At present, the main shortcomings of other externally attached liquid level gauges in the market are reflected in the following aspects: (1) The four-wire externally attached liquid level gauges produced by other domestic manufacturers are high-power consumption, complicated wiring and high cost. High users bring a lot of inconvenience. And high power consumption is also one of the main reasons for the unstable performance and low service life of the instrument. More than 95% of industrial sites use two-wire instruments. Two-wire instruments not only have a high safety factor, but also have convenient wiring arrangements. (2) The stability is poor, mainly because the liquid level jumps when the liquid level fluctuates in the spherical tank and the storage tank. (3) The blind area is large, and some manufacturers have a blind area larger than 10% of the measurement range, which is unacceptable to most users; (4) The accuracy is low, and users dare not use it directly for measurement and signal output, but can only be used as a backup level gauge; (5) ) can not solve complex working conditions such as bottom sedimentation, and the scope of application is greatly narrowed; (6) complex installation and debugging, high after-sales service costs make the level gauge can not be promoted on a large scale. In recent years, with the rapid development of electronic technology and signal processing technology, the measurement technology of liquid level measuring instruments has experienced a development process from mechanical to mechatronics, and then from mechatronics to automation. Shaanxi Kaidi breaks through some weak links of the externally attached liquid level gauge: 1. The first two-wire externally attached liquid level gauge. Not only reduces power consumption and is more secure, but also reduces wiring and installation costs. 2 is more stable. Shaanxi Kaidi uses advanced electronic technology and decisively adopts ARM-based chips with stronger computing power, which not only improves product performance, but also reduces the entire product volume and has a wider range of applications. The external level gauge is more powerful and highly integrated. It can measure stably even when the tank is in and out of liquid (fluctuation of liquid level is large). 3 The blind spot is smaller. Highly sensitive ultrasonic transducers (probes) with larger bandwidth and powerful chip computing capabilities can precisely control the frequency and pulse times of ultrasonic waves, and control and reduce blind spots from two dimensions of frequency domain and time domain. 4 High precision. Reasons that affect the accuracy: the speed of sound and the computing speed of the chip. Shaanxi Kaidi calibrates the speed of sound through technical methods such as diameter calibration and temperature calibration. 5 Complex conditions such as precipitation. The probe with large bandwidth and high sensitivity can automatically match the frequency according to the thickness of the storage tank and the thickness of the sediment, even if there is sediment in the storage tank, it will not affect the measurement results. 6 Easier installation and debugging. Exclusively designed automatic debugging function. After years of experience accumulation and continuous upgrading and transformation of externally attached liquid level gauges, Kaidi products are more stable and accurate.
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We believe our ability can raise a giant wave of innovation among the field of level gauge.
Guangdong Kaidi Energy Technology Co., Ltd. agreed, noting that successful social marketing will become an even more important component of overall marketing strategies, and that marketers will have to think longer, harder and more creatively if they want to be able to fulfill the newly created potential of customized level indicator.