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gas density meters
  • Spring Festival Holiday Notice-2025
    Spring Festival Holiday Notice-2025
    Dear Customers: Thanks for your kindly support for our company long time.According to the production arrangement, we would like to inform you our company Chinese New Year Holiday will be observed from  25th January 2025 to 8th February 2025.We will normal work on 9th February 2025 and look forward to better co-operation in the future ! If you have any urgent or special demand, please contact us freely, we will try our best to solve your problems, wishing you all a happy and prosperous Spring Festival! Sincere yours, SHANGHAI FOSENSE INSTRUMENTATION CO.LTD TEL.: +86 021 59202961 FAX:+86 021 59706006 E-MAIL: <jackyfang@fosensetech.com> ADD:Building 12,No.600,Xinyuannan Road,Pudong New District,Shanghai,China
    - January 21, 2025
  • QUALITY  MANAGEMENT SYSTEM CERTIFICATE
    QUALITY MANAGEMENT SYSTEM CERTIFICATE
    Warm Congratulations To SHANGHAI FOSENSE INSTRUMENTATION CO.LTD For Obtaining The QUALITY MANAGEMENT SYSTEM CERTIFICATE
    - March 25, 2025
  • National Day holiday notice
    National Day holiday notice
    Dear Valued Customer, As the National Day in 2024 approaches, we would like to inform you of our holiday arrangements in accordance with the '2024 Holiday Arrangement of The General Office of the State Council' and considering our company's operational needs. The holiday period will be from October 1st to October 7th, totaling seven days. Should you have any urgent or specific requirements during this time, please do not hesitate to reach out to us. We are committed to accommodating your needs as best as we can. Best regards. Shanghai Fosense Instrumentation Co.,Ltd
    - September 30, 2024
  • Passed the testing for digital remote transmission meters by CEPRI
    Passed the testing for digital remote transmission meters by CEPRI
    Fosense's FXM100 series remote SF6 density monitor has passed the testing for digital remote transmission meters by CEPRI. CEPRI is a comprehensive and multi-disciplinary research institute affiliated to SGCC(State Grid Corporation of China).
    - January 26, 2024
  • The Company Has Been Recognized As a High-tech Enterprise
    The Company Has Been Recognized As a High-tech Enterprise
    The Shanghai FOSENSE has recently received the "High tech Enterprise Certificate" jointly issued by the Shanghai Science and Technology Commission, Shanghai Finance Bureau, State Administration of Taxation, and Shanghai Taxation Bureau. This is the second time the company has been recognized as a high-tech enterprise since 2019. The certificate was issued on December 14, 2022 and is valid for three years. The recognition of the company as a high-tech enterprise is a recognition of the company's independent research and development, technological innovation, and growth potential in SF6 density relay products. It helps to enhance the company's core competitiveness and influence, and has a positive impact on the company's future operation and development.
    - April 06, 2023
  • Our Company's Newly Developed LoRa Wireless Remote  Transmission Meter Product  Release
    Our Company's Newly Developed LoRa Wireless Remote Transmission Meter Product Release
    FXM100/TW Series LoRa Wireless Remote SF6 Gas Density Relay Description The FXM100/TW series LoRa wireless remote SF6 gas density relay can achieve LoRa wireless remote transmission function. Full power with SF6 density relay. It can directly indicate the density (P20) value on the dial, which is used to monitor the density (P20) value of SF6 gas in closed containers. When the density (P20) value reaches the set value, the internal contact logic state changes, thereby outputting the contact signal; It also has real-time digital information collection, calculation, and LoRa wireless remote transmission,which can provide real-time data for the online monitoring system of equipment status. Mainly used for SF6 Insulated GIS switchgear, circuit breakers, pole mounted switches, and transformers, as well as SF6 gas online monitoring systems. Monitoring range -0.1~0.9MPa (customizable) Monitoring accuracy (SF6 is gas state) 20℃: ±1.0%(F.S.) or ±1.6%(F.S.) -40℃~60℃: ±2.5%(F.S.) Ingress protection IP66 Ambient temperature -40℃ 60℃, relative humidity 95%RH Leakage rate (helium leak detection) Interface size M20 1.5、 (customizable) Type of contact Magnetic assisted electric contact switch 80% Ag20% Ni contact gold plated 10μm Insulation performance Resistance of insulation>100MΩ(500V DC)、power-frequency withstand voltage≥2Kv,50/60 Hz 1min Contact electrical parameters ≤30W/50VA、≤1A、≤220VDC/380VAC Shock resistance ≤50g(Oil filled) or ≤30g(Oil free) vibration resistance 20m/s² Weight ≈1.2kg Supply voltage 24DC Power consumption ≤2W Communication LoRa wireless transmission, transmission distance over open spaces 5km Anti-electromagnetic interference IEC61000-4-2:4class(15KV) IEC61000-3:3class(10V/m) IEC61000-4-4:4class(4KV) IEC61000-45:4class(+/4KV) IEC61000-4-6:3class(10V) IEC61000-48:5class(100A/m) IEC61000-4-9:5class IEC61000-4-10:5class IEC61000-4-11:60%Ut Application The FXM100/TW series LoRa wireless remote SF6 gas density relay, combined with LoRa data transmission radio DT U, which can achieve LoRa wireless transmission between FXM100/TW and DTU.And DTU outputs externally RS485 (ModBus RTU), TCP/IP, 4G and other communication interfaces and protocols.
    - November 13, 2020
  • Holiday Notice for Dragon Boat Festival
    Holiday Notice for Dragon Boat Festival
    Dear Esteemed Customer, We would like to extend our heartfelt appreciation for your ongoing support and confidence in our company. In line with our production schedule, we have devised a holiday plan for the upcoming festival. The company will be closed from June 8th, 2024 (Saturday) to June 10th, 2024 (Monday). Should you have any urgent or specific requirements, please feel free to contact us and we will endeavor to accommodate your needs. Thank you very much! Shanghai Fosense Instrumentation Co.,Ltd
    - June 06, 2024
  • The company  completed the changing version of the ISO9001:2015 Quality Management System Certification Certificate successfully
    The company completed the changing version of the ISO9001:2015 Quality Management System Certification Certificate successfully
    The company completed the changing version of the ISO9001:2015 Quality Management System Certification Certificate successfully.
    - July 11, 2018
  • Shanghai FOSENSE Instrument Co., Ltd.'s V2-103/T Series Remote Density Relay Has Successfully Passed Third-party EMC Testing
    Shanghai FOSENSE Instrument Co., Ltd.'s V2-103/T Series Remote Density Relay Has Successfully Passed Third-party EMC Testing
    In July 2016, our V2-103/T series products passed the third-party EMC test successfully. This test was entrusted by Shanghai Instrument and Automatic Control System Inspection and Testing Institute, according to the standards of the State Grid "Inspection specification for online monitoring devices of substation equipment -Part I ". All EMC projects passed the test in grade A. The EMC test proves that our V2-103/T series remote density relays are fit with complex electromagnetic environments under high and ultra-high voltage conditions.
    - November 24, 2016
  • ‌Innovative SF6 Gas Density Relay Enhances Safety in High-Voltage Power Systems
    ‌Innovative SF6 Gas Density Relay Enhances Safety in High-Voltage Power Systems
    Recent advancements in SF6 gas density relay technology are revolutionizing safety and monitoring capabilities in high-voltage power systems. These devices, critical for ensuring the stability of electrical equipment such as GIS (Gas-Insulated Switchgear) and transformers, now integrate cutting-edge features to address temperature variations, remote monitoring, and real-time data transmission. Key Technological Breakthroughs ‌Temperature Compensation and Precision‌Modern SF6 gas density relays utilize advanced temperature compensation mechanisms to maintain accuracy across fluctuating environmental conditions. By integrating sensors like DS18B20 and ATMega16 microcontrollers, these relays dynamically adjust pressure readings to reflect true gas density, minimizing false alarms or operational risks. ‌Wireless Remote Monitoring‌The latest models, such as the WINFOSS-D6XR, support wireless data transmission via 4-20mA or RS485 interfaces. This enables real-time monitoring of SF6 gas density in substations, aligning with the global push toward smart grids and IoT-enabled infrastructure. ‌Enhanced Durability and Functionality‌Innovations like silicone oil filling improve shock resistance, while modular designs—including three-way valve assemblies—facilitate online verification and maintenance without interrupting power systems. Industry Applications SF6 gas density relays are now widely deployed in: High-voltage switches (GIS/PCB) and gas-insulated transformers. Medium-voltage CGIS systems and GIL (Gas-Insulated Lines). Unmanned substations requiring remote telemetry and control. Market Impact Manufacturers like WINFOSS and HVTest are leading the development of calibrators and testers to ensure relay reliability. These tools streamline compliance with international safety standards, reducing downtime and operational costs. Future Outlook As utilities prioritize digitization, demand for intelligent relays with cloud connectivity and predictive maintenance capabilities is expected to surge. Industry experts highlight the growing role of these devices in achieving carbon-neutral power networks through efficient gas management. This article synthesizes advancements in SF6 relay technology, emphasizing safety, innovation, and alignment with global energy trends.
    - March 04, 2025
  • 2024 May Day Holiday Announcement
    2024 May Day Holiday Announcement
    Dear Valued Customer: We would like to express our sincere gratitude for your continued support and trust in our company. In accordance with our production schedule, we have formulated a vacation plan for the upcoming holiday: The company will be closed for the May 1st to May 5th holiday, and will resume operations on May 6th.Should you have any urgent or specific requirements, please do not hesitate to contact us and we will make every effort to accommodate your needs. Thank you very much! Shanghai Fosense Instrumentation Co.,Ltd
    - April 30, 2024

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