High-Precision Automatic Portable SF6 Dew Point Analyzer with Chilled Mirror Technology for GIS & SF6 Gas Systems

The KST-V SF6 Chilled Mirror Dew Point Analyzer is a high-precision moisture measurement instrument specially designed for SF6 gas systems, GIS equipment and high-voltage electrical maintenance applications.

The analyzer adopts the chilled mirror measurement principle, providing highly accurate and stable dew point measurement results with excellent long-term reliability. Compared with conventional sensor-type dew point meters, the chilled mirror method offers higher measurement accuracy, superior repeatability and reduced drift over time.

The instrument supports fully automatic continuous measurement and automatic mirror heating/defrosting cycles, ensuring stable operation in field testing environments.

Equipped with a built-in lithium battery, digital flowmeter and intelligent control system, the KST-V is suitable for on-site SF6 gas moisture analysis in substations, GIS switchgear maintenance, gas recovery systems and power utility inspection applications.

The analyzer operates based on the chilled mirror dew point measurement principle.

When the gas temperature drops below the saturation temperature of water vapor under a certain pressure condition, moisture in the gas condenses on the mirror surface. The reflected light changes due to diffuse reflection caused by condensation, and the optical sensing system detects this variation.

The intelligent control system analyzes both optical and temperature signals to accurately calculate the dew point temperature of the tested gas.

After dew formation is detected, the instrument automatically heats the mirror surface until condensation disappears, then starts a new cooling cycle for continuous automatic measurement.

Below 0°C, the measured dew point is referred to as the frost point.

• High-precision chilled mirror measurement technology
• Specially designed for SF6 gas moisture analysis
• Fully automatic continuous measurement
• Automatic mirror heating and defrost cycle
• High measurement stability with minimal drift
• Digital flowmeter display
• Dual display units: °C and ppm
• Built-in rechargeable lithium battery
• Portable compact structure for field operation
• Suitable for GIS and high-voltage electrical maintenance

• GIS switchgear moisture testing
• SF6 gas quality analysis
• High-voltage substation maintenance
• SF6 gas recovery and filling systems
• Electrical power utility inspection
• Gas insulated equipment commissioning
• Preventive maintenance of SF6 electrical equipment

• KST-V Dew Point Analyzer
• Power Adapter
• Sampling Hose
• Self-sealing Quick Connectors
• User Manual
• Carrying Case

• SF6 pressure reducing valve
• Stainless steel sampling hose
• Additional quick connectors
• External gas filter unit
• Calibration service

Chilled mirror technology provides direct physical dew point measurement with higher accuracy, better repeatability and long-term stability compared with conventional polymer sensor technology.

Yes. The KST-V is specifically designed for GIS equipment, SF6 gas systems and high-voltage electrical maintenance applications.

Yes. The analyzer supports both dew point temperature (°C) and ppm moisture content display.

Yes. The built-in 24V lithium battery supports more than 8 hours of continuous operation, making it suitable for outdoor and on-site testing.

• Professional SF6 gas equipment manufacturer
• Extensive GIS industry application experience
• OEM & customized solution support
• Fast technical response
• Stable industrial-grade equipment
• Global B2B export experience