High-Sensitivity Portable SF6 Leak Detector with 0.01 ppm Sensitivity, Non

Professional SF6 gas leak detector for GIS inspection, SF6 switchgear maintenance and quantitative SF6 gas leak testing.

LF-301 SF6 Quantitative Leak Detector is a professional high-sensitivity SF6 gas leak detector designed for GIS switchgear inspection, SF6 circuit breaker maintenance and high-voltage electrical equipment leak testing.

The detector adopts advanced high-frequency electromagnetic field ionization technology with low-voltage high-frequency ionization detection principle, providing stable performance, high sensitivity and long service life.

Unlike radioactive leak detectors, LF-301 contains no radioactive source, ensuring safe operation and environmental protection.

The detector features a touchscreen LCD interface with direct ppm display down to 0.01 ppm resolution, enabling highly accurate quantitative SF6 leak analysis.

• Power utilities
• Electrical maintenance companies
• GIS manufacturers
• Electrical research institutes
• High-voltage testing laboratories

The detector can replace imported SF6 leak detector products for many GIS inspection applications.

KSTONE holds exclusive patented technology and guarantees calibration compliance with National Institute of Metrology, China and China Electric Power Research Institute.

LF-301 SF6 leak detector provides ultra-high sensitivity up to 0.01 ppm for accurate quantitative SF6 leak testing.

The touchscreen interface directly displays SF6 concentration values in ppm with 0.01 ppm resolution.

Example display: 0.20 ppm, 0.047 g/y leakage rate

LF-301 adopts low-voltage high-frequency ionization technology without radioactive materials, ensuring safe operation.

• ≤1 second response at 100 ppm SF6
• ≤10 seconds response under 99.99% SF6 environment

Portable structure with 3-meter detector cable allows flexible operation inside GIS cabinets and substations.

The detector provides audible alarm indication: higher leakage concentration results in faster buzzer frequency.

• Sensor lifetime ≥5 years
• No fragile detector components
• Low maintenance cost

Supports simple user recalibration and calibration adjustment.

Built-in fault self-checking system helps users quickly identify operating status and troubleshooting information.

Probe head includes PM1.0 filter protection to prevent dust blockage and maintain stable detection performance.

• GIS switchgear inspection
• SF6 circuit breaker maintenance
• Gas insulated substations
• High-voltage switchgear testing
• Electrical maintenance services
• Power utility inspection
• Electrical testing laboratories
• GIS manufacturing plants
• SF6 gas leakage inspection

LF-301 can detect SF6 concentration as low as 0.01 ppm.

No. LF-301 uses non-radioactive high-frequency ionization technology.

Yes. LF-301 is specially designed for GIS and SF6 switchgear inspection applications.

Yes. The detector directly displays quantitative SF6 concentration values in ppm.

The sensor lifetime is more than 5 years under normal operation conditions.

• National Standard Drafting Expertise: KSTONE is one of the drafting institutions for the national standard GB/T 11023-2018 High-voltage switchgear--SF₆ gas tightness test method.
• High Sensitivity Detection: Accurate SF6 leak detection with 0.01 ppm resolution.
• Fast Response Performance: Rapid leak identification for efficient field inspection work.
• Portable Industrial Design: Compact structure with durable aluminum alloy carrying case.
• Reliable & Low Maintenance: No consumable components and long-term industrial durability.