Stable and reliable! Dinghua ELL external level gauge stands out in the fluorine chemical industry

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Fluorine chemistry is a sub-sector of the chemical industry, and it has now developed into one of the fastest-growing, most high-tech, and most promising emerging industries in this field. Fluorine-based chemical products are widely used in fields such as transportation, refrigeration, military industry, aerospace, and machinery, thanks to their excellent performance. https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/225dfc39f4d4447d98bde7c9d1f1b82f~noop.image?_iz=58558&from=article.pc_detail&x-expires=1669945172&x-signature=kIacKCkSXCl3hmNqBEOumqqmQPE%3D Image/Internet. The case discussed in this article comes from a well-known fluorine chemical company in China. Due to the high degree of automation in its research, development, and production processes, this company has very high requirements regarding the accuracy and stability of liquid level measurements. The Dinghua external liquid level gauges stood out among various such instruments thanks to their stability, high precision, and reliability. Over time, nearly a hundred of these Dinghua products were used in the company’s technical upgrades and maintenance efforts, contributing to accurate liquid level measurement there. ►►►Operating conditions overview: Media to be measured include hydrogen fluoride, trifluorochloroethane, refrigerant F32, refrigerant 152a, etc. Measurement challenges: These involve highly hazardous substances as well as volatile strong acids, which are significantly affected by temperature ； The storage tank has a large measurement range; when the liquid level is high, the echo signals become unstable. Tank specifications: sausage-shaped tank, Ø 3600 mm, Ø 1000 mm, etc., with a measurement range of 20 m. Product recommended: ELL-FI-CE type external level gauge. https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/aa0c66fd2c174de5b4d6aff3d8946593~noop.image?_iz=58558&from=article.pc_detail&x-expires=1669945172&x-signature=cKR%2Bx08by9MrXD3L6IMuHHl2fuo%3DELL. Diagram of on-site installation of the external level gauge ►►► Background of the technical upgrade and Dinghua’s solution: Before the upgrade, the materials used in the upstream fluorine chemical industry were often toxic and hazardous, posing significant risks; the related tank areas had a very high degree of danger. The factory originally used external-mounted gauges from other manufacturers as secondary measuring instruments for the technical upgrade, but due to issues with measurement stability and accuracy, their performance was not satisfactory. There are more than one external testing product available on the market; after investigation by the factory management, it was decided to select another external level gauge through a trial period. After making the improvements, taking into account the hazards of the measuring medium as well as the customer’s requirements for accuracy and stability, Engineer Ding Hua recommended that the customer use an ELL external-type level gauge. https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/eb42e7f94e004ae3a5c3057d843f63d2~noop.image?_iz=58558&from=article.pc_detail&x-expires=1669945172&x-signature=9wkhpOvAuwqCVNiaj8SW%2FQFUjH0%3DELL Diagram of on-site installation for external level gauges. The ELL sonar-type external level gauge is a device for measuring liquid levels in a completely non-contact manner; it can be used for measurements outside the tank, making the process simple and fast. No drilling is required, production does not need to be stopped, and no welding is needed. This not only reduces the workload on personnel but also lowers the costs associated with modifications. During use, the operating curve of this gauge showed a trend that was generally consistent with the original guided-wave radar level curve on the container. https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/ac92eacbd1e54dc397068410e9b23136~noop.image?_iz=58558&from=article.pc_detail&x-expires=1669945172&x-signature=zG33KxNhHLJTOS7jrtDbu2do9Ms%3DELL Graph of the field operation of the external-level gauge: 1. Yellow curve: Operation curve of the guided-wave radar at the inlet; 2. Blue curve: Operation curve of the Xi’an Dinghua ELL external-level gauge; 3. Orange curve: Measurement operation curve of other products during the same period. As shown in the graph, the three curves of different colors reflect the real-time changes in the liquid level in the container as measured by the three instruments. During the measurement period from the 26th to the 29th, the blue curve (Dinghua) and the yellow curve (radar) showed similar trends in liquid level changes, indicating stable liquid level measurement by these instruments ； The orange level curve (for other external measurement products) shows significant fluctuations in the level trend, and signal loss occurs when measuring levels above 7 meters, resulting in unstable level measurement. Subsequently, the customer decided to purchase ELL external level gauges in large quantities, and to date, Dinghua Electronic Instruments have been operating stably at the site for nearly 2 years. ►►►Measurement features of ELL external level gauges: The ELL series of external level gauges boasts over 20 patented technologies, including \"micro-vibration analysis,\" \"automatic calibration,\" and \"small blind zone\" technologies. Through advanced intelligent processing methods, these gauges overcome various technical barriers associated with external level measurement, address the impact of different operating conditions on level stability, and achieve a maximum accuracy of ±1mm. The external level gauge of the ELL series obtained SIL3 certification for \"functional safety integrity\" in 2017 (Shanghai Institute of Instrumentation). https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/4a3f2cb9fbcf42cd92916550a1e40638~noop.image?_iz=58558&from=article.pc_detail&x-expires=1669945172&x-signature=HwnLmrgoZxNEIFQlsCRxEGF4lBg%3D Looking ahead, the fluorine chemical industry has become an important part of **strategic emerging industries. China’s fluorine chemical industry is developing steadily, and it will continue to expand into new application areas in the future. Dinghua has earned high praise from numerous fluorine chemical companies thanks to the excellent performance of its products and the attentive service provided by its after-sales engineers.