GD8000C SF6 Gas Leak Online Monitoring System
GD8000C quantitatively leak online monitoring system is mainly used in the 35KV SF6 switch room and 500KV, 220KV, 110KV GIS room in the substation to monitor the SF6 gas leakage in the SF6 combined electrical equipment room environment and the oxygen content in the air in real time.
When SF6 gas leaks, the density of SF6 gas is more than 5 times that of air, which accumulates in the lower space and causes local oxygen deficiency, that may cause major accidents. The system uses multiple sets of new high-sensitivity imported SF6-O2 sensors and temperature and humidity sensors. When the indoor SF6 and O2 concentrations change slightly, the sensors can respond to these changes immediately, even if the SF6 concentration is 10ppmv can be effectively monitored.
The concentration change monitored by the sensor is converted into a 485 communication digital signal by the transmitter, A / D module, 485 communication module and single-chip microcomputer, and the signal is sent to the main controller through the on-site RS-485 bus. The main controller performs data process and store, and judge whether to alarm, start the fan and remote communication and other functions.
● Indoor GIS environmental monitoring
● Environmental monitoring of indoor SF6 switchgear room
● SF6 high purity gas manufacturing
● R & D purpose
● 10.1inch touch color screen.
● The sensor selection is flexible, and infrared sensors, electrochemical sensors, and ultrasonic sensors are optional. According to different onsite, it can be selectively adapted and more flexible.
● Industrial-class ARM motherboard, supporting excellent OS software system, makes the product more reliable.
● Intelligent judgment algorithm can remove sensor false alarm caused by various reasons.
● Intelligent zero drift calibration extends the life of the sensor.
● Human body automatic monitoring function. When the person reaches the entrance of the monitored environment, the main unit automatically detects the human body signal. The main unit will start up immediately and report monitoring environmental data.
● The alarm data and the ventilation program are self-set, and the user can set the corresponding alarm data according to the regulations.
● Anti-electromagnetic interference circuit, more reliable.
● It can expand USB communication, serial communication, and wireless communication modules, and can realize the communication and printing functions of PC. (Optional)
● The monitoring and display function of the oxygen content in the environment.
● SF6 gas content monitoring and display function in the environment.
● Environmental temperature and humidity monitoring display function.
● Hypoxia alarm function.
● SF6 gas content exceeding standard alarm function.
● Regular exhaust function.
● Hypoxia or SF6 content exceeds the standard, forced exhaust function.
● Manual forced exhaust function.
● Last exhaust display function.
● Real-time display of various parameter functions.
● Historical data query function.
● The unique daily automatic zero calibration function, automatically overcomes drift and false alarms.
● User-adjustable inspection interval. Automatically strengthen the tracking function of suspicious detection points.
● When an alarm occurs, the fan and sound and light alarms are automatically turned on.
● Users can adjust the alarm parameters of SF6 and O2
● Support RTU remote control function.
● Mass alarm data record storage function, long life design
● With only a limited cost increase, the detection points can be doubled to increase the detection density.
● Wide working power design 185- 250VAC, anti-surge and lightning function.
● Human body induction, automatically start the fan or voice system
● The display is relatively stable and solves the problem of data drift.
● Connect with PC to achieve remote monitoring, and record event and historical event.
● Host size: 400 × 300 × 200
● SF6 concentration detection range: 0-1500ppm
sensitivity: ± 5% setting value
● Detection range of oxygen concentration: 0-25%
● Oxygen measurement accuracy: <0.5% (0.4%, O2 at 21%)
● Hypoxia alarm threshold: 18.0% (adjustable)
● Temperature display range: -20--99 ℃
● Humidity display range: 0--99% RH
● Detection point: According to the actual situation on site
● Data recording function: automatic recording of alarm events, mass storage, and automatic update.
● Alarm output: Relay idle contact output, can be connected with RTU, and supports RS485 alarm output.
● Support RTU remote start fan function.
● Support infrared human body detection, automatically start the fan or voice prompt.
● Fan controller:
Switch type: directly control the fan power supply.
Pulse type: It is connected to the fan control switch; it can be selected according to on-site situation.
● Fan start supports multiple modes: timing start, alarm start, automatic start when there is someone, remote start, manual start, etc.
● Modes selection for main unit: wall-mounted explosion-proof / 3U / 19-inch standard case or 10-inch touch Android style interface. (for option.)
● Support the remote transmission of measurement data via RS485. For example, install a large LED display at the door, and immediately see the measurement parameters and system operation in the distance (option by user)
