The KDZD-IV is a multi-functional SF6 gas comprehensive tester combining dew point, purity, and decomposition product analysis in one compact instrument. It uses high-precision imported sensors: a Vaisala DRYCAP® sensor for dew point, electrochemical sensors for decomposition products (SO₂, H₂S, CO), and a thermal conductivity sensor for SF6 purity. The large LCD touchscreen with bilingual menus supports intuitive operation, while a built-in rechargeable battery and data storage for 600 records make it ideal for field use. With low gas consumption and multiple communication interfaces, it streamlines SF6 gas quality testing for power system maintenance.

• Three-in-one design: dew point, SF6 purity, and decomposition product testing in one instrument.
• Long-life imported sensors (Vaisala DRYCAP® for dew point, electrochemical for decomposition products).
• Built-in gas filter and pressure regulator for stable, accurate measurements.
• Large touchscreen LCD with bilingual (Chinese/English) menus for easy operation.
• On-site calibration capability to ensure reliable field performance.
• Simultaneous display of all measurement parameters for real-time monitoring.
• Large-capacity data storage (600 records) for historical data access.
• Low gas consumption (200~400mL/min) to minimize SF6 usage.
• Multiple communication interfaces (RS232/USB) for PC data transfer and analysis.
• Built-in thermal printer for Chinese report output and on-site documentation.

• Model: KDZD-IV
• Measurement Range:
  • Dew point: -80°C~+20°C (supports ppmv)
  • SF6 purity: 0~100% (by weight)
  • Decomposition products: SO₂/H₂S 0~200ppm; CO 0~1000ppm
• Accuracy:
  • Dew point: ±0.5°C (frost point below 0°C)
  • SF6 purity: ±0.5% (flow-independent)
  • Decomposition products: 0.1ppm resolution
• Response Time:
  • Decomposition products: 10~15s
  • SF6 purity: 30s
• Gas Flow: 200~400mL/min
• Inlet Pressure: ≤1.0MPa
• Operating Environment: Temp -20°C~+55°C, Humidity ≤90%RH
• Power Supply: AC220V±10% 50Hz; Built-in rechargeable battery (≥4h continuous use)
• Display: Touchscreen LCD (bilingual menu)
• Data Storage: 600 test records
• Interfaces: RS232/USB for PC communication; Built-in thermal printer
• Dimensions: 300mm × 400mm × 150mm (L×W×H)
• Net Weight: 5.5kg, Gross Weight: 10kg (with packaging)