Provide solutions for green, safe, intelligent and efficient power grids
Shanghai Fosense Instrumentation Co., Ltd. is a high-tech company in electrical instrument industry, which integrates R&D, manufacture, sale and service of gas density relays. Fosense is located in China (Shanghai) Pilot Free Trade Zone Lin-gang Special Area. The company is committed to developing and manufacturing intelligent products, such as electrical SF6 and alternative gas density relays, density transmitters, valve devices and SF6 remote monitors.
Fosense believes that independent intellectual property rights and advanced equipment are the foundation of high standard quality control systems. The company has a professional team composed of experienced staff in electrical instrument and remote monitoring industries. The proportion of employees with a bachelor or higher degree over 80%. The company also has leading manufacture, inspection and testing equipment, these help Fosense to stay competitive.
Our flagship SF₆ gas density monitor is engineered to exacting quality standards: boasting IP65 protection for reliable performance in harsh, dusty, and humid environments; demonstrating exceptional mechanical and environmental durability through rigorous high-frequency endurance, shock, and vibration tests, with a service life exceeding 25 years; and supporting advanced communication protocols such as RS-485/Modbus RTU for smart digital management. With accuracy maintained within ±10 kPa, it provides dependable data for insulation condition monitoring and gas leakage early warning. Suitable for electrical equipment across various voltage levels, it empowers customers to achieve intelligent and safe gas management.
We have established a comprehensive end-to-end quality management system, ensuring strict control at every stage—from raw material selection and manufacturing processes to finished product inspection. By utilizing high-precision calibration equipment and environmental simulation test platforms, each unit undergoes multi-dimensional performance validation, including rigorous helium leak tests and temperature-pressure characteristic tests, to guarantee 100% compliance upon delivery. Our certifications in quality management systems and other standards demonstrate our commitment to international norms in production and service, providing solid assurance for product quality and reliability.
Shanghai Fosense is committed to advancing gas monitoring technology through continuous R&D investment and an expanding product ecosystem. We strive to become a globally leading provider of gas safety monitoring solutions, building a "smart shield" for safe production and green development across industries. Together with our clients, we are dedicated to creating a safer and more efficient industrial future.