With the gradual increase in the voltage levels of domestic substations, the usage of SF6 high-voltage circuit breakers by power departments is currently growing at a rate of approximately 15% per year. In the fields of high voltage, extra-high voltage, and ultra-high voltage switches, SF6 gas has almost become the sole insulating and arc-quenching medium. However, most SF6 high-voltage switches are installed indoors where air circulation is relatively slow. If an SF6 gas leak occurs, it can easily lead to localized oxygen deficiency, posing significant safety hazards to staff who may suffer from oxygen deprivation. It also greatly reduces the arc-quenching effectiveness of the circuit breaker and can cause damage to the breaker itself. Therefore, once an SF6 gas leak is detected, immediate measures must be taken to accurately locate the leak, repair the leakage point, and promptly eliminate safety hazards associated with the high-voltage circuit breaker.

The high-precision handheld SF6 gas leak detector detects SF6 gas concentration values and provides audio-visual alarms based on user-defined concentration thresholds. It also displays trend charts of detection data, enabling accurate identification of SF6 gas leak points. This brings great convenience for the maintenance and repair of SF6 equipment.

• Adopts internationally advanced pump-suction technology and NDIR single-beam dual-wavelength infrared measurement technology, offering high detection sensitivity, accuracy, and stability.
• Utilizes high-precision digital processing technology, along with unique drift control and temperature compensation circuits, providing strong anti-interference capability.
• Features comprehensive self-check functions including low battery power, sensor fault, and over-range detection during the testing process.
• Equipped with a large color screen dot matrix LCD display and full Chinese menu-based functional management.
• Real-time display of detection data during the testing process, along with dynamic waveform curve analysis.
• Screen displays alarm values and curves, using a buzzer for alarm notifications.
• Includes self-calibration functionality.
• Powered by a high-capacity rechargeable lithium battery, allowing continuous operation for more than 5 hours.
• Built-in perpetual calendar function.
• Compact size, convenient for handheld measurements.
• Capable of storing 20,000 data entries and waveform records, with browsing and query functions.

Product Parameters

• Product Model: KDJL-IV
• Measurement Method: NDIR single-beam dual-wavelength infrared measurement technology
• Monitored Gas:
• Measurement Range: 0～12000 ppm
• Resolution: 1 ppm
• Accuracy: ±(2% + 5d)
• Repeatability: <2%
• Pump Extraction Speed: 0.4 L/min
• Continuous Operation Time: No less than 5 hours
• Instrument Warm-up Time After Startup: ≤10 seconds
• Response Time: Less than 3 seconds
• Recovery Time: Less than 3 seconds
• Charging Adapter Specifications: DC5V/1A
• Surge (Shock) Immunity: ±1.2 kV
• Operating Temperature: -20℃ to +50℃
• Operating Humidity: Relative humidity 5～95% (no condensation)
• Atmospheric Pressure: 50 kPa to 110 kPa
• Protection Rating: IP33, double insulation, CAT II standard
• Dimensions: Length 250 mm × Width 160 mm × Height 70 mm
• Weight of Main Unit: 1 kg