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

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).

Dear customers： Thanks for your concern and care for such a long time. According to the production arrangement, our company has made a holiday plan for this coming holiday: New Year: Dec.30th - Jan.1th; Resume normal work from Jan.2nd If you have any urgent or special demand, please contact us freely, we will do our best to cooperate with you. Happy New Year! Thank you very much! Shanghai Fosense Instrumentation Co.,Ltd

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.

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.

The company completed the changing version of the ISO9001:2015 Quality Management System Certification Certificate successfully.

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.