The KDFJ-II is a multi-functional SF6 gas comprehensive tester combining moisture (dew point), purity, and decomposition product analysis in one compact instrument. It uses imported high-precision sensors: a dedicated humidity sensor for moisture, a temperature-compensated thermal conductivity sensor for purity, and European electrochemical sensors for decomposition products (H₂S, SO₂, CO). The 3.5-inch (or 7-inch) color touchscreen provides intuitive operation, while a built-in rechargeable battery supports >12 hours of field use. With low gas consumption, data storage for 1000 sets, and USB data transfer, it streamlines SF6 gas quality testing for power system maintenance.

• Three-in-one design combines moisture, purity, and decomposition product testing in one instrument.
• Automatic self-calibration of sensor zero points eliminates system errors and ensures measurement accuracy.
• Intuitive touchscreen operation with a simple interface for easy field use.
• Fast measurement response with dew point testing completed in ~3 minutes per test.
• Low gas consumption and original imported self-locking connectors for leak-proof operation.
• Large-capacity data storage for up to 1000 test records with non-volatile memory.
• USB interface enables PC data transfer for advanced analysis and report generation.
• Built-in rechargeable lithium battery supports >12 hours of continuous field operation.
• Optional thermal printer for on-site data printing and comprehensive data management.
• Optional pipeline cleaning system automatically cleans internal lines after testing, improving accuracy.

• SF6 Purity: Range 0%~100%, Accuracy ±0.5%, Measurement time <2min
• Dew Point (Micro-Water): Range -80°C~+20°C, Accuracy ±1°C (-60°C~+20°C); ±2°C (-80°C~-60°C)
• H₂S Measurement: Range 1~200ppm, Detection limit ≤0.1ppm, Accuracy ±0.5%
• SO₂ Measurement: Range 1~500ppm, Detection limit ≤0.1ppm, Accuracy ±0.5%
• CO Measurement: Range 1~500ppm, Detection limit ≤0.1ppm, Accuracy ±0.5%
• Display: 3.5-inch color LCD (or 7-inch touchscreen optional)
• Power Supply: AC220V/50Hz; Built-in rechargeable lithium battery (Charging time 10h, Continuous use >12h)
• Operating Environment: Temp -40°C~+60°C, Humidity -30%~+60% RH
• Data Storage: Stores up to 1000 test records
• Interface: USB for PC data transfer; Optional thermal printer
• Dimensions: 250mm × 230mm × 300mm (L×W×H)
• Net Weight: 6.8kg, Gross Weight: 15kg (with packaging)
• Gas Compatibility: SF6, non-corrosive gases