Enhance Environmental Safety with Reliable SF6 Gas Density Devices

Sulfur hexafluoride (SF6) is a synthetic gas with unique properties that make it invaluable as an insulator and arc extinguisher in switchgear. Unfortunately, it also contributes negatively to climate change. The gas is non-toxic under normal conditions and can be purified and recycled many times, but immediate action is required in case of leakage to minimize its harmful environmental impact. To ensure environmental safety and reduce emissions, your equipment should be equipped with a device that monitors the gas density. 

To enhance environmental safety, you can use a gas density monitor with preset switch points that alarm in case of an SF6 leak or a gas density sensor that continuously monitors the gas density. By continuously measuring the density, you can analyze and monitor the operation of the facility, plan inspections, and anticipate maintenance actions. 

Trafag SF6 Gas Density Monitoring Devices

High Product Requirements in Outdoor Environments

Gas-insulated systems are often installed outdoors where temperatures frequently range between –40°C and +50°C. Robust and durable density monitoring equipment is required to withstand temperature variations, shocks, and vibrations. 

Gas density is often determined indirectly through gas pressure using manometers or pressure sensors. Since the pressure in a hermetically sealed volume varies with temperature, such devices need temperature compensation, which can introduce errors. 

Trafag’s robust and maintenance-free units are developed to monitor SF6 and alternative insulating gases in high- or medium-voltage switchgear. These units are accurate, shock-resistant, operate in the widest temperature range on the market, and withstand high gas pressure. Trafag’s sensors eliminate the risk of errors.

Direct Measurement with Patented Techniques 

Trafag’s SF6 gas density units are thoroughly developed for various applications, ensuring reliable monitoring and durable performance. 

Using patented technology, the units monitor gas densities and SF6 gas mixtures as well as alternative insulating gases. With the help of these units, quick detection of leaks in critical components, such as circuit breakers, is enabled, allowing immediate action to minimize harmful SF6 emissions. 

There are three product categories: SF6 density monitors, SF6 gas density sensors, and hybrid SF6 gas density monitors. 

SF6 Density Monitors 

The mechanical monitors use a unique gas density reference, eliminating the need for recalibration and making them unaffected by temperature changes. They are resistant to false switching (contact bounce) caused by vibrations or shocks. The operating temperature ranges from -60°C to +80°C, and the monitors are equipped with a local gas pressure display and durable alarm contacts for switch points. 

SF6 Gas Density Sensors 

The electronic sensors use patented quartz fork technology to measure gas density directly, without needing to calculate from pressure and temperature. The sensors are temperature-stable, maintenance-free, vibration- and shock-resistant, providing excellent long-term stability. 

Hybrid SF6 Gas Density Monitors 

These monitors combine the benefits of mechanical gas density monitors and electronic gas density sensors, designed in a compact unit. They can manage demanding applications and maintain the highest accuracy over a very wide temperature range. Trend analysis allows for earlier leak detection, provides data for preventive maintenance, and facilitates compliance with greenhouse gas regulations. The monitors are also equipped with a local gas pressure display and durable alarm contacts for switch points. 

SF6 Gas Density Monitoring Devices

SF6 Gas density monitors, SF6 Gas density Sensors and Hybrid SF6 Gas Density Monitors.

Conclusion 

Trafag’s SF6 gas density devices offer a reliable solution for monitoring and minimizing the environmental impact of SF6 leaks in switchgear. With robust design and patented technology, they ensure accurate monitoring and quick leak detection, contributing to increased environmental safety and efficient operation. 

Explore Further 

We have a many SF6 gas density sensors and monitors in our portfolio. For more information, read further at the link below. 

Product Overview SF6 Gas Density 

Read more about Trafag´s gas density monitoring in this article: Four Decades of Experience in Gas Density Monitoring.

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Source: Trafag