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https://p3-sign.toutiaoimg.com/tos-cn-i-axegupay5k/c2ef5de173fa4b368da2969bfef9cc5f~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1744868718&x-signature=HZ3ZysUdiH92qTd8gU1rQdta1uc%3D Dinghua Electronics is committed to developing high-quality industrial automation measurement and control products. Over the past few years, thanks to its superior products and professional services, it has continued to expand into overseas markets. There is an increasing demand from international clients, and the company has provided professional and reliable measurement solutions for many overseas users, earning itself a good reputation. Today, Dinghua Electronics’ DHE-FT fork-type level switches are sold successfully in many overseas countries and regions. This case study focuses on overseas users, demonstrating how Dinghua Electronics’ fork switches utilize corrosion-resistant material systems and miniaturized design to ensure reliable level monitoring in challenging scenarios such as high-corrosion environments and tight spaces in chemical processing Case 1: Level measurement of alkali solution tanks in a foreign company – Characteristics of the on-site conditions ■ Corrosive medium erosion: The alkali solution used at the customer’s site is highly corrosive; traditional instrument materials (ordinary stainless steel or coatings) are prone to corrosion, which can lead to damage to the instruments, inaccurate measurements, and even safety accidents. ■ Signal interference under complex operating conditions: When alkali solution is injected into the tank, high-speed flow, the bubbles it generates, temperature fluctuations within the tank, and medium convection can all lead to drift in the measurement signals and incorrect readings; traditional instruments find it difficult to accurately and consistently detect changes in liquid level. https://p26-sign.toutiaoimg.com/tos-cn-i-6w9my0ksvp/dfd0a9b1396f4d2ebb566db0b3eeb360~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1744868718&x-signature=u26CqBI7UfP3l9KbVjHwwqnFNNI%3D https://p26-sign.toutiaoimg.com/tos-cn-i-6w9my0ksvp/ca84f84a475f4088b16e4a517994ed46~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1744868718&x-signature=NnJgIwRLxhyXxbseCO7%2FHXVtNyQ%3D DHE-FT tuning fork level switch solution ■ Corrosion-resistant core design: (1) ECTFE coating + 316L stainless steel fork body: After understanding the conditions at the user’s site, the fork bodies used for these solutions are made of 316L stainless steel, with an ECTFE coating applied to their surface. It can resist long-term erosion by alkaline solutions, and its temperature tolerance range is from -40°C to 150°C, which effectively prevents corrosion of the fork material. (2) Fork body damage monitoring technology: The DHE-FT tuning fork level switch can use software to monitor the vibration frequency trend of the fork body in real time; by analyzing these frequency changes, it is possible to determine whether the fork body is corroded and to assess the extent of corrosion. This enables monitoring of the corrosion status throughout the product’s lifecycle, providing users with a reliable guarantee for level measurement. ■ Intelligent anti-interference technology: (1) “ELL signal analysis technology”: This is a proprietary signal analysis technique developed by Dinghua Electronics. Drawing on over 30 years of data accumulation and utilizing advanced intelligent processing methods, it enables effective mitigation of the interference caused by foam, adhesion, and changes in medium composition, ensuring that fork switches can operate stably and reliably under various complex field conditions. (2) “Quick Drop” type fork design: It reduces the impact of viscous media accumulation and improves response speed, enabling rapid detection of the liquid level status even under high flow rates and severe disturbances. Case 2: Measurement of DN50 small-diameter pipes at a foreign company – Characteristics of the on-site conditions ■ Installation constraints in tight spaces: The pipe diameter is only DN50; traditional level switches are large in size and have long arms, making it impossible to install them directly. Modifying the pipes would increase construction costs and time. ■ Signal type mismatch: The user’s initial requirement was misreported as a 2-wire analog output, when in fact a 4-wire digital output is required. Since the location is abroad, the manufacturer is unable to carry out on-site adjustments promptly; therefore, the user must handle the module replacement themselves. DHE-FT tuning fork level switch solution ■ Miniaturized design: (1) Suitable for installation in pipes with small diameters: Depending on the user’s requirements, we recommend using a threaded connection (G3/4 or 3/4NPT) with a small-sized fork body, allowing for direct installation in pipes with a diameter of DN50 without any need to modify the pipes. (2) Lightweight design: The tuning fork switch purchased by users features a compact and lightweight overall structure; it requires no additional installation accessories and can be used right away, thereby significantly reducing the difficulty and cost of on-site installation. https://p3-sign.toutiaoimg.com/tos-cn-i-6w9my0ksvp/a19f2fd038bd49bf8219de1858575edf~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1744868718&x-signature=oBENm%2F6pXfOSQeexWWm2qSf8fV4%3D Miniaturized design https://p3-sign.toutiaoimg.com/tos-cn-i-6w9my0ksvp/a9f4b584639246ec933041772628891e~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1744868718&x-signature=ZDTu0%2BFURKXGqmLOpphxRxkPdcg%3D Tips for quick installation and maintenance ■ Modular design for easy maintenance: (1) Replaceable signal modules: The modular architecture allows for quick replacement of 2-wire analog and 4-wire digital output modules on-site. In this case, the user resolved the signal adaptation issue by replacing the 4-wire digital switch module themselves, without the need to return to the factory or rely on engineers, thus avoiding downtime losses. (2) 5-level alarm delay with adjustable switching function: This feature prevents false operations in applications involving turbulence or splashing, ensuring that the fork-type level switch can monitor and control the level more accurately and reliably. (3) Functions that can be set for the dry/wet alarm mode: The alarm mode can be flexibly configured on-site to meet the requirements of the control room. This product combines Dinghua Electronics’ 33 years of experience in industrial measurement and control with over 20 patented technologies. It uses the “ELL signal analysis technology” to eliminate disturbances such as foam and adhesion, and its design without mechanical components ensures maintenance-free operation. It has been tested in more than a thousand projects in fields such as petrochemicals and pharmaceutical manufacturing. Consultation comes with a free gift, available only for the first 25 people. Click to learn more and receive an electronic version of the product manual: https://p3-sign.toutiaoimg.com/tos-cn-i-6w9my0ksvp/747e0cd25a684ab1b9efa6e087564d7c~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1744868718&x-signature=4RKd4Un%2BxguQqYxj1hJjeBJdRIc%3D Dinghua Electronics always focuses on customer needs, integrating corrosion resistance, adaptability, and ease of maintenance into its products. In the future, it will continue to concentrate on complex scenarios in industrial automation, using innovative technologies to raise industry standards and provide reliable level monitoring solutions for industrial production around the world.