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Refrigerant Leak Detector Leak Testing for the Highest Quality Demands
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.


  • 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.


  • 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

Typical Applications

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

Part Number

Part Number Description
510-025 HLD6000 Refrigerant Leak Detector CO2
510-027 HLD6000 Refrigerant Leak Detector Smart
510-028 HLD6000 Leak Detector R600a/R290


Part Number Description
511-045 SNIFFER LINE FOR HLD 6000, CO2
511-048 SNIFFER LINE FOR HLD 6000, R600a/R290
560-310 I/O 1000 module
560-315 BM1000 Profibus module
560-316 BM1000 PROFINET IO module
560-317 BM1000 DeviceNet module
560-318 BM1000 Ethernet/IP module
560-332 Data Cable 2 m
560-335 Data Cable 5 m
560-340 Data Cable 10 m
511-021 Sniffer tip 100mm HLD5000
511-024 Sniffer tip 400 mm
511-022 Sniffer tip, 400mm, prebent, 45°,
511-020 Extension tip 400mm
511-029 Extension for sniffer tip 45°
511-025 Water protection tip
511-040 Extension for probe cable
511-042 Adapter for CO2 calibration


Part Number Description
511-027 Set of tip filter holders,20pcs
511-018 Set of filter cartridges,20pcs
511-010 Replacement COOL-CHECK leak


Type HLD6000
Detectable refrigerant
Singel gas probe R744 (CO2),R600a/R290
Universal Smart probe halogen-based refrigerants
Min. detectable leak rate
Single gas probe 1 g/a (0.03 oz/yr)
Universal Smart probe 0.5 g/a (0.014 oz/yr)
Response time < 1 s
Leak rate units g/a; mbar l/s; oz/yr; lb/yr; Pa m3/s
Measuring scale
Single gas probe 0 – 100 g/a (0 – 3.57 oz/yr)
Universal Smart probe 0 – 300 g/a (0 – 10.7 oz/yr)
Warm-up time 30 s
Digital inputs/outputs 10 inputs, 8 outputs (for use with I/O module)
Serial interface RS232 (for use with I/O module) or field bus systems (for use with Profibus module
Dimensions (diameter; height) 266 mm (10.25 in); 365 mm (14.4 in)
Weight 4.5 kg (10 lbs)
Length of sniffer line 4.8 m (15.5 ft.)
Standard sniffer tip length 100 mm (3.9 in.)
Gas flow 320 sccm
Allowed operating temperature 5 – 50°C (40 – 120°F)