The SHK-OL-I system monitors SF6 concentration, oxygen level, temperature and humidity in high‑voltage switch rooms. It collects data, stores it, and generates alarms or controls ventilation when thresholds are exceeded.
The system consists of a main host, SF6 probes, temperature‑humidity probes, ventilation equipment and infrared human sensors. It supports RS485 networking, up to 30 SF6 probes per host, and offers both automatic and manual ventilation control with a user‑friendly LCD interface. This manual is written in Chinese.
| SF6 concentration detection range | ≤1000 ppm |
|---|---|
| Oxygen detection range | 0 ~ 25 % |
| Temperature detection range | -40 ~ +60 °C |
| Humidity detection range | 0 ~ 100 % RH |
| Fan start response time | < 2 s |
| Power supply | AC 150V ~ 265V |
| Insulation strength (shell to power) | > 2000 V |
| Communication interface | RS485 |
The system alarms when SF6 concentration exceeds 1000 ppm.
An alarm is generated when oxygen concentration falls below 18%.
Each SHK-OL-I main unit can connect up to 30 SF6 probes.
The system uses an RS485 bus for networking and data transmission.