SF6 and O2 Monitoring for Switchgear Rooms: How the KSTONE KS100 System Works

In an SF6 equipment room, operators need a clear view of gas conditions and a practical way to respond when readings become abnormal. A connected monitoring system brings detection, local alarms, ventilation control and remote access into one coordinated arrangement.

The KSTONE KS100 monitors ambient SF6, oxygen, temperature and humidity. It combines infrared SF6 sensing with real-time display, historical records and adjustable gas alarm settings.

From Sensor Modules to Central Control

The system architecture below shows how field monitoring connects with local control and remote management.

Distributed sensor modules collect readings from monitoring locations and communicate with the main control unit. This arrangement brings information from multiple points together, helping operators review room conditions through a central interface.

The diagram also illustrates connections to an external display, an alarm beacon and digital outputs. These provide different ways to make system status available to personnel and connected equipment.

Linking Detection with Ventilation and Alarms

When SF6 or oxygen readings reach the configured alarm conditions, the KS100 can activate audible and visual alarms and start the exhaust fan. Scheduled ventilation and manual forced ventilation are also supported.

In the illustrated arrangement, the main control unit connects to the exhaust fan through a fan controller. This links monitoring information with a defined ventilation response.

Alarm settings and ventilation logic should be agreed during project design to suit the room layout and operating requirements.

Extending Visibility Beyond the Equipment Room

The KS100 supports connection to a host computer for remote monitoring and event review, together with RTU connectivity, relay dry contacts and RS485 alarm output.

The architecture diagram further shows a cloud platform with computer access, a mobile app, WeChat and data backup. These connections illustrate how information can be made available beyond the local control unit, subject to the selected communication and software configuration.

When planning remote access, confirm which functions are required, how the site network will connect and which personnel need access.

Key Monitoring Parameters

Temperature and humidity monitoring provides additional environmental information alongside the gas readings.

Planning a System for Your Site

A useful starting point is a room layout showing the SF6 equipment, proposed monitoring locations, ventilation equipment and control interfaces.

For a project discussion, share:

• The room dimensions and equipment arrangement.

• The required number of monitoring points.

• Existing fans and ventilation controls.

• Required alarm, display and remote access functions.

These details help define a suitable system configuration and clarify the connections needed between detection, alarms, ventilation and remote monitoring.

Discuss Your SF6 Monitoring Requirements

Planning an SF6 and O2 monitoring system for your switchgear room or substation?

Contact KSTONE to discuss the monitoring layout, control interfaces and remote access requirements for your project.

View the KSTONE KS100 SF6 Online Leak Alarm System