OM.M800 SF₆ Micro-Water Density Online Monitoring System

Product Overview
The OM.M800 SF₆ Micro-Water Density Online Monitoring System is designed to track key parameters of SF₆ gas in GIS/GIL systems, including micro-water content, density, pressure, temperature, and dew point. By dynamically monitoring changes in digital data such as pressure and micro-water levels, the system accurately reflects trends indicating potential deterioration of gas quality inside the switchgear. Additionally, the system enables real-time, online data transmission, providing users with up-to-date insights into the operational status of their GIS/GIL equipment—and offering a scientific basis for proactive maintenance and preventive repairs.

System Architecture

Architecture Description
The OM.M800 SF₆ Micro-Water Density Online Monitoring System primarily consists of an SF₆ micro-water density monitor, a micro-water density communication management unit, a wireless aggregation node (optional), a wireless access node (optional), an industrial-grade server, an alarm unit (optional), an IEC61850 protocol converter (optional), and a switch (optional).
Monitoring data is connected to the data bus via an RS485 interface or LORA wireless protocol, linking it to the station control server. The server collects and automatically stores the monitoring data in real time, while also performing trend analysis on the equipment status.
 

Wireless System Architecture

Advantageous Features
● Precise digital density and moisture monitoring technology
● Safety alerts, diagnostics of equipment operation trends, and condition-based maintenance
● The integration of digital, networked, and intelligent monitoring technologies
● Access and monitor the status data of each switchgear chamber anytime, anywhere via the internet
● Automatically generate trend charts for state changes
● The digital system addresses the versatility and interchangeability of various alarm interlock values.
● High-performance sensor technology
The pressure sensors we employ outperform other well-known manufacturers in the industry in terms of linearity, temperature compensation, digital calibration, response speed, and stability. They are meticulously crafted using advanced precision temperature compensation and a unique sensor stress-isolation technology, seamlessly integrated with the stainless steel housing through positive and negative cavity welding. This design ensures accurate pressure measurements and automatic compensation under varying altitudes and meteorological conditions, earning us a national invention patent.

System Parameters

On-site Case

China Southern Power Grid Company's Guangdong ±800kV Qiaoxiang Converter Station		State Grid Sichuan-Chongqing-Ganzi 1000kV Ultra-High Voltage Substation