Refrigerant Leak Detector


Leak Testing for the Highest Quality Demands


Product configurator

Gemini™ MxG5xx

Sensor version
Ionization chamber
Emmision current
Flange connection to vacuum chamber
Switching function
Electrical connection
Digital interface
Analog output signal
Your configuration
Gemini™ MxG5xx
Switching functions
Electrical Connection
FCC, 8-pin
Digital Interface
Measurement range
1.2 - 8.68 V
Personal information
Gemini™ MxG5xx
Gemini™ MAG500
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INFICON is taking a further step toward leak detection at the highest level with the HLD6000 refrigerant leak detector. It is setting new standards in user-friendly handling, reproducibility of measuring results and integration into local networks. 

The newly developed, slim and ergonomically shaped sniffer probe allows for more efficient leak detection. Furthermore, with its intuitive touchscreen display, the HLD6000 is even easier to operate than its predecessor the HLD5000. The HLD6000 leak detector also delivers the maximum in communication diversity. A USB interface as well as an optional I/O module and an optional fieldbus module are available for acquiring and using measurement data and integrating that data into local networks.


  • Especially slim and ergonomically designed sniffer probe with status and LED lights
  • Intuitive touchscreen with leakage rate graph
  • USB interface for storing measurement data and for software updates
  • HLD6000 components (probes, base units, consumables and accessories) are compatible/interchangeable with its predecessor, the HLD5000 refrigerant leak detector
  • Newly designed COOL-Check holder for easy exchange intor ernal test leaks
  • Individual sniffer probes for CO2 and R600a/R290, and a universal Smart sniffer probe for halogen-based refrigerants are available
  • Optional I/O module and optional fieldbus module facilitate integration into local networks 
  • ES-Filter for successfully adsorb of interfering substances such as alcohols, adhesives, outgassing foams and more


  • Compact, Light And Slim
    For optimal, efficient leak detection a compact sniffer probe is especially important. The HLD6000 sniffer probe is not only extra slim, but also light and ergonomically shaped. Two LED lights in the sniffer tip simplify leak detection at poorly lit inspection locations, facilitate precise leak location, and notify the user by flashing when the allowable leakage rate is exceeded. A color LED status light continually alerts the operator about the operational readiness, measuring operation, exceeding the allowable leakage rate, as well as errors and warnings.
  • Touchscreen Display
    The new INFICON human-machine interface menu has intuitive menu navigation and makes using the leak detector especially easy. The leakage rate trend graphs any leaks on the easy-to read front panel making leak detection even more efficient.  
  • Communicative Diversity  
    The HLD6000 offers a variety of analog and digital interfaces via the optional I/O module. An optional fieldbus module facilitates the integration of the HLD6000 into local networks. The USB interface allows transmitting measurement data to a connected USB flash drive.
  • High Reliability
    The HLD6000 uses a long-life infrared sensor with high sensitivity and extremely short response time, and has been specifically developed for the detection of refrigerants. In addition the HLD6000 has a proven dual inlet system which continually compares the background concentration and the measured gas flow, thus keeping false alarms to a minimum.

Typical Applications

  • Air conditioners
  • Automotive air conditioners
  • RAC components 
  • and similar products


Universal Smart probehalogen-based refrigerants
Single gas probe (available for CO2 and R600a/R290)1g/ a
Universal Smart probe0.5 g/a (0.014 oz/yr)
Response time< 1 s
Single gas probe0 - 100 g/a (0 - 3.57 oz/yr)

Part Number

Part Number
510-025HLD6000 Refrigerant Leak Detector CO2
510-027HLD6000 Refrigerant Leak Detector Smart
510-028HLD6000 Leak Detector R600a/R290
510-127HLD6000 Refrigerant Leak Detector Smart Plus
510-128HLD6000 Refrigerant Leak Detector R600a/R290 Plus
511-147Sniffer Line for HLD6000 Smart Plus
511-048SNIFFER LINE FOR HLD 6000, R600a/R290
511-148Sniffer Line for HLD6000 R600a/R290a Plus
560-310I/O 1000 module
560-315BM1000 PROFIBUS module
560-316BM1000 PROFINET IO module
560-317BM1000 DeviceNet module
560-318BM1000 Ethernet/IP module
560-332Data Cable 2 m
560-335Data Cable 5 m
560-340Data Cable 10 m
511-021Sniffer tip 100mm HLD5000
511-024Sniffer tip 400 mm
511-022Sniffer tip, 400mm, prebent, 45°,
511-020Extension tip 400mm
511-029Extension for sniffer tip 45°
511-025Water protection tip
511-040Extension for probe cable
511-042Adapter for CO2 calibration
511-027Set of tip filter holders,20pcs
511-018Set of filter cartridges,20pcs
511-010Replacement COOL-CHECK leak


HLD6000 Brochure
pdf 9,6 MB German Brochures
HLD6000 CO2 Product Sheet_
pdf 444,3 KB German Brochures
HLD6000 CO2 Brochure
pdf 444,3 KB German Brochures
HLD6000 CO2 Brochure
pdf 347,2 KB Chinese Brochures
HLD6000 Brochure
pdf 555,1 KB Korean Brochures
HLD6000 CO2 Brochure
pdf 494,0 KB Spanish Brochures
Dichtheitsprüfung in der Automobilindustrie
pdf 2,4 MB German Brochures
HLD6000 CO2 Brochure
pdf 399,6 KB English Brochures
HLD6000 CO2 Brochure (French)
pdf 497,7 KB French Brochures
HLD6000 CO2 Brochure (Italian)
pdf 496,1 KB Italian Brochures
HLD6000 Détecteur de fuites de fluide frigorigène
pdf 488,5 KB French Brochures
HLD6000 Detector de fugas de refrigerante
pdf 488,2 KB Spanish Brochures
HLD6000 Detektor úniku chladiva
pdf 583,4 KB Czech Brochures
HLD6000 Detektor wycieków czynników chłodniczych
pdf 484,9 KB Polish Brochures
HLD6000 Detetor de fugas de gases refrigerantes
pdf 494,3 KB Portuguese Brochures
HLD6000 Refrigerant leak detector
pdf 486,0 KB English Brochures
HLD6000 Rilevatore di fuga per refrigerante
pdf 487,7 KB Italian Brochures
HLD6000 Течеискатель для хладагентов
pdf 590,0 KB Russian Brochures
HLD6000 冷媒ガスリークディテクター
pdf 701,4 KB Japanese Brochures
HLD6000 冷媒检漏仪
pdf 651,3 KB Chinese Brochures
Leak Testing in the Automotive Industry
pdf 2,4 MB English Brochures
Pruebas de fuga en la industria automotriz
pdf 2,4 MB Spanish Brochures
RAC Brochure
pdf 2,4 MB English Brochures
pdf 5,5 MB Chinese Brochures
pdf 5,6 MB Chinese Brochures
pdf 3,7 MB Japanese Brochures
자동차 산업의 누설 검사
pdf 2,4 MB Korean Brochures