Inficon D-TEK 3 Refrigerant Leak Detector

SKU: INF-721-202-CN41
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Just released in 2021, only the D-Tek 3 could come from Inficon building on the success of the popular D-Tek Select.

D-TEK 3 is designed with versatility in mind. Quickly and easily switch sensors to look for refrigerant or CO2!


D-TEK 3 builds on the proven performance of D-TEK leak detectors with added features to help you get your job done faster. An easy-to-change sensor, quick-charge lithium-ion battery, and a new ergonomic design make D-TEK 3 a versatile tool for everyday RAC maintenance and repair. Plus, a new optional CO2 sensor gives you two instruments in one. Upgrade your toolbox with this accurate and reliable leak detector.



  • All-new redesigned long-life infrared sensor with the longest sensor life in the industry
  • Designed for field use and easy of use
  • Low, Medium, High, and Super sensitivity settings
  • Automatic and manual zero modes
  • Rugged carrying case included Detects all CFCs, HCFCs, HFCs, HFOs, and blends (including A2Ls)
  • Detects CO2 with optional CO2 sensor
  • Optional extra-long probe for hard-to-reach areas
  • Two-year replacement warranty.


1 x Infrared sensor, 1 x Lithium-ion battery, Spare filters, 1 x AC wall charger NZ/AU Plug, 1 x Carrying case and 24-Month Warranty.
Optional: INF-724-701-G2 CO2 Sensor

Typical Applications:

  • Industrial AC/Refrigeration
  • Residential AC/Refrigeration


Type D-TEK 3 Leak Detector INF-721-202-CN41
Includes Infrared sensor
Lithium-ion battery
Spare filters
AC wall charger
Carrying case
Compatible refrigerants R22, R32, R134a, R404a, R407c, R410a, R422b, R448a, R449a, R452a, R452b, R507 (AZ50), R1234yf, CO(requires CO2 sensor), ammonia, SF6, and more
Minimum sensitivity 0.03 oz./yr. (1 g/a)
Sensitivity per EN14624 1 g/a
Sensitivity to R744 (CO2) 0.07 oz./yr. (2 g/a)*requires CO2 sensor
Power source Lithium-ion battery (rechargeable)

Micro USB (can operate while charging)

Battery life 10 hours
Weight with battery 0.97
Certifications CE
A2L Certified
Patents (pending) Application #10 2018 208 826.8
Probe length (standard probe) 17 in.



[pdf-embedder url=”” title=”Inficon D-TEK 3 Refrigerant Leak Detector Product Sheet”]Inficon D-TEK 3 Refrigerant Leak Detector English Manual NZ

Inficon D-TEK 3 Refrigerant Leak Detector Product Flyer