SF6 gas leakage monitoring device (hereinafter referred to as this system) is an intelligent on-line monitoring system designed and developed according to the current situation of the electric power system emphasizing on safety production and providing personal health and safety protection for the staffs in the room of the power distribution unit where SF6 equipment is installed.

Product Features

  • Measurement of SF6 and oxygen concentration in the environment
  • Temperature and humidity detection function in the environment
  • Real-time display of telemetry, telecommunication and alarm information for all monitoring points in the environment
  • SF6 gas concentration exceeds the standard and oxygen deficiency alarm function
  • Oxygen deficiency or SF6 concentration exceeds the standard, forced exhaust function
  • Automatic fan start function in case of alarm
  • Timed automatic exhaust function, manually forced on or off all fans
  • Historical data query, display and storage function
  • Entering the GIS room automatically broadcasts the current environmental status function.
  • Multi-point network function, can provide communication protocol and substation background database docking (reserved)
  • Sound and light, voice alarm function, alarm information storage, recording function
  • Human infrared detection sensor function
  • Remote data transmission function
  • Touch screen operation display
  • Large LCD screen with automatic cut-screen display

system configuration

The SF6 gas leakage monitoring and alarm system consists of a four-in-one transmitter, an environmental temperature and humidity transmitter (optional), a monitoring host, a large LED display (optional) and a background monitoring system. The transmitter is used for on-site data collection, and the monitoring host adopts color LCD with clear handwriting. The host displays SF6 gas concentration, oxygen concentration, temperature and humidity in the environment of on-site switching gas chamber, which is clear at a glance, and it can be preset with alarm signals, manually and automatically start the fan, etc., and communicate with the backstage data through RS485.

     

Field 4-in-1 Transmitter

(The above picture is for reference only, subject to the real thing)

On-site monitoring host (the above picture is for reference only, subject to the real thing) (the above picture is for reference only, subject to the real thing)

LED large screen rotating display area code and corresponding data (the above figure is for reference only, subject to the physical)

Technical Parameter

  • Operating voltage: AC/DC 220V±10%,50Hz~60Hz
  • Power consumption: rated voltage <10W
  • Accuracy class: 5
  • SF6 gas concentration measurement range: 0~3000ppm
  • SF6 concentration over the limit alarm point: 1000ppm (national standard value), accuracy <2%FS
  • Oxygen content detection range: 0-25%
  • Oxygen deficiency alarm point: 18% (national standard value), accuracy <1%FS
  • Temperature detection range: -30～+99℃ (accuracy ±0.5℃)
  • Humidity detection range: 10～99%RH: Accuracy ±0.3%RH
  • Fan output power contact: 6A;
  • Remote transmission communication mode: 485/Ethernet
  • Monitoring host external size (mm): L300 × W400 × H81
  • Four-in-one sensor size (mm) : L153 × W150 × H52
  • Monitoring historical data storage capacity: 100 entries;
  • Touch display size: 7 inches
  • Main unit and detection unit installation mode: wall-mounted
  • Working environment temperature: -25℃～70℃.
  • Humidity of working environment: ≤95%
  • LED display size: 68.2*20.2*6.8cm

Installation Requirements

SF6 monitoring mainframe

  • Installation position: SF6 monitoring mainframe is usually installed at the entrance of GIS room (or control room), 1.2-1.5m from the ground, convenient for staff to operate.
  • Installation method: first fix the host bracket on the wall, then hang the host on the bracket can be.

Gas Detection Sensor (4-in-1)

  • Installation position: 110KV or above GIS indoor gas detector is generally installed under the combination of electrical equipment from the ground 10cm, 35KV switch room gas detector is installed on the wall from the ground 10-15cm.
  • Installation method: installed under the equipment with a mounting bracket, the gas detector will be fixed on the mounting bracket, and then the mounting bracket can be fixed on the ground; installed on the wall does not need to be equipped with a mounting bracket, the gas detector can be fixed directly on the wall.

Ambient temperature and humidity sensor (optional)

  • Installation position: same as gas detector.
  • Installation method: Same as gas detector.

audible and visual warning light

  • Installation position: Generally installed at the entrance, 10cm directly above the door eaves (or directly above the mainframe).
  • Installation method: first punch the hole, and then fix the sound and light alarm light on the wall can be.

LED display

  • The outdoor screen is wall-mounted, with holes punched in the mounting location for mounting and fixing.
  • 220V power cord to a switched outlet.
  • The 485 cable connects to the 485 Capture 2 port of the host computer for communication.

Operating Instructions

homepage

The operation of the SF6 gas density monitoring device is mainly done through a 7-inch touch screen with a resolution of 800 x 480 resolution.

The top side of the main interface is the title bar and includes the system name and system time. In the center is the real-time data of this system, according to the up and down page button on the bottom side of the table, you can look over the real-time telemetry data of each monitoring point. The bottom side of the strong exhaust button, emergency stop button and menu button. Under normal circumstances, the device has no alarm, the fan is completely shut down, the location of the region can be set by the user.

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