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KYKY ZQJ Series Helium Leak Detector Portable Dry High-Performance Models January 14, 2026

KYKY (Beijing KYKY Technology Co., Ltd.), China's leading vacuum and leak detection equipment manufacturer, offers a comprehensive range of Helium Mass Spectrometer Leak Detectors. The primary product line, the ZQJ series, supports leak detection in vacuum mode, spray mode, and sniffing mode. These detectors are ideal for various industries, including semiconductor manufacturing, automotive, aerospace, refrigeration and air conditioning, and chemical metallurgy. The series includes portable, tabletop, and modular models. While some older models have been discontinued, they may still be available through maintenance services or the second-hand market. Below is a detailed list of KYKY Helium Leak Detector models, compiled from official catalogs and supplier information, categorized into current/active and discontinued models, along with their key features (e.g., dry/wet, main applications). This list covers major variants but is not exhaustive.

Current/Active Models

These models are still sold or supported on the KYKY official website and by suppliers. They emphasize high sensitivity, fast response, and the use of localized components, such as proprietary turbomolecular pumps. For more information on advanced vacuum solutions, visit our main site.

Model Type Key Features Minimum Detectable Leak Rate (He) Remarks
ZQJ-3000 Portable Dry Built-in turbomolecular pump + dry diaphragm pump, oil-free operation, touchscreen, automatic calibration, lightweight (<20 kg) 5 × 10⁻¹¹ Pa·m³/s (Vacuum mode); 1 × 10⁻⁸ Pa·m³/s (Sniffing mode) General industrial type, suitable for on-site maintenance and production testing; high pumping speed (3 m³/h), response time <2 s
ZQJ-3200 Tabletop High-Performance Built-in high-performance mass spectrometer system, modular design, supports He/H detection, RS232 interface 1 × 10⁻¹³ Pa·m³/s (Vacuum mode) Preferred for precision applications such as semiconductor and scientific research; high leak detection pressure, wide measurement range
ZQJ-530 Portable Wet Built-in oil-sealed rotary vane pump (RV), robust vehicle-mounted design, simple operation panel, integrated vacuum measurement 5 × 10⁻¹¹ Pa·m³/s (Vacuum mode) Suitable for large volume systems, easily integrated into production lines; high pumping speed, suitable for industrial environments
ZQJ-530G Portable Dry Built-in dry mechanical pump + turbomolecular pump, oil-free, compact casing, optimized valve block 5 × 10⁻¹¹ Pa·m³/s (Vacuum mode) Cleanroom optimized version, suitable for medical equipment and electronics; low background interference, fast startup (<3 min)

Discontinued Models

These models have been removed from official production lines, but KYKY still provides spare parts, calibration, and repair support (e.g., through authorized service centers). They are commonly found in the second-hand market for legacy systems. For comprehensive support on all types of vacuum pumps and accessories, contact our experts.

Model Type Key Features Minimum Detectable Leak Rate (He) Remarks
ZQJ-2000 Portable Built-in oil pump, max inlet pressure 1000 Pa, basic automatic tuning 2 × 10⁻¹¹ Pa·m³/s Early economical model, suitable for small to medium-sized tests; replaced by ZQJ-3000
ZQJ-2300K Tabletop Proprietary three-flow molecular pump, wet configuration, audio alarm ~10⁻¹¹ Pa·m³/s Historical model, suitable for chemical and metallurgy industries; limited repair support

Additional Notes

  • Series Overview: The ZQJ series is based on magnetic sector mass spectrometers, supporting He-4 detection. Dry versions use oil-free pumps, suitable for clean environments, while wet versions offer higher pumping speeds but require regular maintenance. Accessories such as helium spray guns, sniffing probes, and remote controls are highly versatile. All models comply with ISO and GB/T standards. KYKY boasts nearly 50 years of accumulated leak detection technology, making it China's largest HLD R&D base.
  • Discontinued Model Support: Discontinued models like the ZQJ-2000 can typically receive 1-3 years of repair support through KYKY service programs. Minimum detectable leak rates are based on standard test conditions.
  • Source: Information is sourced from the KYKY official website, suppliers such as KYKY Technology Co., Ltd., and industry directories like China Powder Network.
  • For specific part numbers (PN), pricing, or accessories for any model, it is recommended to visit the KYKY official website (kyky.com.cn) or contact a local distributor. Explore more about industrial applications and advanced solutions at Taixing Pump.
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