SF6 gas leakage environmental monitoring system sulfur hexafluoride alarm

SF6 gas leakage environmental monitoring system sulfur hexafluoride alarm

The SF6 leakage monitoring and alarm system mainly consists of four parts: detection probe, system host, peripheral equipment, and monitoring system. The collector is responsible for collecting on-site environmental data from SF6 distribution equipment rooms, performing A/D conversion, and transmitting it to the system host. The system host analyzes, compares, and judges the collected data, and runs corresponding processing programs. Peripheral devices include alarm devices, ventilation devices, and are controlled by the system host.

When the concentration of SF6 gas or oxygen content in the environment changes, the SF6 gas detection probe can immediately capture this change and convert the detected change data into digital signals, which are transmitted to the system host through the RS-485 fieldbus. On the one hand, the system host displays the collected data from the detection probe on the display screen, and on the other hand, through calculation and analysis, compares it with various inherent parameters stored in the host's memory to determine whether each data exceeds the standard.

When the SF6 concentration is higher than the alarm set value (required by regulations to be 1000ppm, this system can set it by itself) or the oxygen content is lower than the alarm set value by 18%, the system host will automatically sound and light an alarm, and start the fan for ventilation, and upload an alarm signal to the remote control.

SF6 gas leakage environmental monitoring system sulfur hexafluoride alarmMain parameters:

working environment

Temperature range: -20 ℃~+50 ℃

Humidity range: ≤ 95% RH

Earthquake level: 7 degrees

Atmospheric pressure: 86kPa~106kPa

SF6 measurement indicators

Measurement range: 0-30000ppmv

Alarm point: can be set within the measurement range, default 1000ppmv

Reference error: ± 5% FS

Repetitive error:<5% FS

Zero drift:<5% FS

Range drift:<5% FS

Oxygen measurement indicators

Detection concentration: 0-25%

Oxygen concentration alarm point: 18%

Oxygen measurement accuracy:<0.4%, O2 at 21%

Other indicators

Temperature measurement range: -25 ℃~+99 ℃

Humidity measurement range: 0-99% RH

Working power supply: AC/DC 100~265V

Alarm output power: AC 220V/10A

Fan output power: AC 220V/20A

Fan ventilation time setting: adjustable, default is 15MIN/time

Data recording: automatic saving