Shanghai Yushi Technology Development Co., Ltd.
| Supply Ability | 1000 units per year |
| Detection Principle | High-Frequency Magnetic Field Low-Voltage Ionization |
| Vacuum Pump | Customized Vortex Spiral Oil-Free Vacuum Pump |
| Packaging Details | Carton/ Wooden box |
| Highest Sensitivity | 0.01 ppm (1×10⁻⁸) |
| Payment Terms | T/T |
| Display Resolution | 0.01 ppm |
| Delivery Time | 15 work days |
| SF₆ Measurement Range | 0.01–10,000 ppm |
| Recommended Range | 0.01–100 ppm |
| Brand Name | KSTONE |
| Model Number | LF-303 |
| Certification | ISO9000 |
| Place of Origin | Shanghai |
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Product Specification
| Supply Ability | 1000 units per year | Detection Principle | High-Frequency Magnetic Field Low-Voltage Ionization |
| Vacuum Pump | Customized Vortex Spiral Oil-Free Vacuum Pump | Packaging Details | Carton/ Wooden box |
| Highest Sensitivity | 0.01 ppm (1×10⁻⁸) | Payment Terms | T/T |
| Display Resolution | 0.01 ppm | Delivery Time | 15 work days |
| SF₆ Measurement Range | 0.01–10,000 ppm | Recommended Range | 0.01–100 ppm |
| Brand Name | KSTONE | Model Number | LF-303 |
| Certification | ISO9000 | Place of Origin | Shanghai |
| High Light | SF6 leak detector with oil-free pump ，ultra-sensitive SF6 leak detector ，wireless SF6 leak detector | ||
The LF-303 SF₆ Quantitative Leak Detector represents the latest generation of high-sensitivity SF₆ gas leak detection systems, building upon the proven LF-300 and LF-301 platforms. Utilizing advanced high-frequency magnetic field low-voltage ionization technology, this instrument achieves an ultra-high sensitivity of 0.01 ppm, enabling precise quantitative detection of even the smallest SF₆ leaks in GIS, GIL, circuit breakers, transformers, and gas handling systems.
The result is a safer, cleaner, and more portable solution for utility companies, GIS manufacturers, EPC contractors, and commissioning engineers.
Detects SF₆ leakage concentrations as low as:
Ideal for locating micro-leaks before they develop into major gas losses.
The LF-303 utilizes a customized vortex spiral oil-free vacuum pump, eliminating the traditional requirement for oil-lubricated vacuum pumps.
Supports modern connectivity options:
Suitable for modern digital substations and remote inspection applications.
Integrated pull-handle structure provides:
The advanced sensor design offers:
Comprehensive leak detection feedback through:
A PM1.0 micro-particle filter protects the detector probe from dust contamination and helps maintain long-term performance stability.
Built-in diagnostic points allow operators to:
Simple field calibration and re-calibration functions help maintain long-term measurement accuracy.
| Item | LF-303 Specification |
|---|---|
| Detection Principle | High-Frequency Magnetic Field Low-Voltage Ionization |
| Vacuum Pump | Customized Vortex Spiral Oil-Free Vacuum Pump |
| SF₆ Measurement Range | 0.01-10,000 ppm |
| Recommended Range | 0.01-100 ppm |
| Highest Sensitivity | 0.01 ppm (1×10⁻⁸) |
| Radiation Source | None |
| Response Time | ≤0.5 s at ≥1 ppm SF₆ |
| Recovery Time | ≤10 s at 99.99% SF₆ |
| Recovery Time (10% SF₆) | ≤1 s |
| Display Resolution | 0.01 ppm |
| Alarm Function | Audible Alarm + Digital Display |
| Alarm Setting | User Adjustable |
| Detector Probe Length | 3 m |
| Wireless Communication | WiFi / Hotspot |
| Continuous Operating Time | Up to 4 Hours |
| Battery Operation | Approximately 3 Hours |
| Power Supply | AC 220V / Rechargeable Lithium Battery |
| Ambient Temperature | 5°C to 45°C |
| Relative Humidity | ≤85% RH |
| Power Consumption | ≤120 W |
| Dimensions | 400 × 340 × 320 mm |
| Net Weight | 13 ±0.5 kg |
| Sensor Protection | PM1.0 Dust Filter |
| Sensor Life | ≥5 Years |
| Warranty | 1 Year Including Sensor |
The LF-303 is widely used for:
KSTONE is a professional manufacturer specializing in SF₆ gas testing, monitoring, recovery, and handling equipment for the global power industry.
The LF-303 can detect SF₆ leakage concentrations as low as 0.01 ppm.
No. The instrument operates without any radioactive source and is safe for operators and transportation.
The LF-303 introduces a customized oil-free vacuum pump, wireless communication capability, and extended battery life while maintaining ultra-high sensitivity.
Yes. The detector supports WiFi and hotspot-based wireless data transmission.
Yes. It is widely used during GIS installation, commissioning, maintenance, and leak verification testing.
The sensor typically lasts between 5 and 10 years under normal operating conditions.
Yes. The LF-303 provides simple user calibration and re-calibration functions.
Yes. The trolley-style design and lithium battery operation make it highly suitable for field applications.
For more information about the LF-303 SF₆ Leak Detector, please contact:
Shanghai Yushi Technology Development Co., Ltd.
Email: info@kstone-sf6.com
We provide advanced SF₆ alternative gas analysis and eco-friendly GIS testing solutions for global power utilities and manufacturers.
Company Details
Business Type:
Manufacturer
Year Established:
2013
Total Annual:
500,00,00-600,00,00
Employee Number:
40~60
Ecer Certification：
Verified Supplier
Company Profile About KSTONE KSTONE is a professional manufacturer specializing in SF6 testing instruments, gas handling equipment, and eco-friendly gas solutions for the global power industry. With over 13 years of professional experience, KSTONE has become one of the leading manufacturers in Chi... Company Profile About KSTONE KSTONE is a professional manufacturer specializing in SF6 testing instruments, gas handling equipment, and eco-friendly gas solutions for the global power industry. With over 13 years of professional experience, KSTONE has become one of the leading manufacturers in Chi...
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