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Energy and Carbon Efficiency

Gas Density Meter

       SASF series remote transmission type SF6 gas density relay is mainly used to monitor the density of SF6 gas in closed cabinet. It can be widely used in SF6 circuit breakers, Ring Mains , gas-filled cabinets, pole switches, transformers etc. It is suitable for the harsh external conditions outdoors. It has the function of real-time remote transmission of SF6 pressure and temperature, which can realize online remote monitoring, remote measurement and remote control functions.

Introduction

  • • SASF series density meter is an important protection and control component in the power system. If the circuit breaker fails, it will cause great economic losses. To ensure the reliability of the circuit breaker operation, it is necessary to monitor the various indicators of the circuit breaker frequently , especially SF6 gas. It must meet the requirements of relevant standards. The so-called density refers to the mass per unit volume of a specific substance under specific conditions. The SF6 gas in the SF6 circuit breaker is sealed in a fixed cabinet. It has a certain density value under the rated pressure at 20℃. It is within the range of various allowable conditions for the operation of the circuit breaker, although the SF6 gas pressure will change with the temperature, but the density of SF6 gas is always the same. Because the insulation and arc extinguishing performance of SF6 circuit breakers depend to a large extent on the purity and density of SF6 gas, the detection of SF6 gas purity and density monitoring are particularly important. If an ordinary pressure gauge is used to monitor the leakage of SF6 gas, it will be difficult to distinguish whether the pressure change of SF6 gas is caused by the actual leakage or the change in ambient temperature.
  • • SASF series remote transmission type SF6 gas density relay is mainly used to monitor the density of SF6 gas in airtight cabinet. It can be widely used in SF6 circuit breakers, Ring Mains cabinets, gas-filled cabinets, pole switches, transformers etc, and is suitable for harsh external conditions outdoors. It has the function of real-time remote transmission of SF6 pressure and temperature, which can realize online remote monitoring, and realize remote measurement and remote control functions.

Feature

  • • Order and control to adopt traditional mechanical structure, and signal acquisition and remote transmission adopt electronic chips.
  • • Realize the perfect combination of electromechanical and ensure safety and reliability
  • • Communication bus interface, convenient system expansion, easy to realize telemetry and remote control functions
  • • Adopt a unique 10-core junction box, convenient and fine wiring
  • • Long transmission distance, simple wiring
  • • Strong anti-electromagnetic interference ability
  • • Adopt imported pressure sensor and temperature sensor
  • • Good sealing performance. It has passed the strict sealing inspection of the world-class helium mass spectrometer, and the leakage rate is less than ≤1×10-8mbar.1/s
  • • The temperature sensing element of the density relay adopts foreign imported materials, with a large temperature compensation range, high accuracy, stable performance and reliability
  • • It displays the SF6 pressure value after temperature compensation, which directly reflects the change of SF6 density.
  • • The red, yellow, and green blocks indicate different working areas, which are not affected by changes in ambient temperature
  • • Safe to use, easy to maintain, and flexible to install
  • • It is possible to carry out system transformation or system matching for operating or newly built substations and GIS stations


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