Kestrel 4200 Pocket Air Flow Tracker

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Item No: 158782
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Kestrel® 4200 Pocket Air Flow Tracker

A great airflow meter for HVAC and dehumidification work

The easy-to-use Kestrel 4200 Pocket Air Flow Tracker is ideal for measuring humidity, barometric pressure, dew point, heat stress, air velocity and more. Automatic air flow measurements calculate readings in cubic feet per minute for you. Air flow meter features a data-logging function that records 1,600 measurement sets at user-selectable time intervals. Review the data on screen or upload it to your PC for further analysis. Includes soft carry pouch, lanyard and user-replaceable batteries. Assembled in the USA.




Wind Speed

0.8 to 89 mph



-20°F to 158°F


Wind Chill

-50°F to 50°F


Dew Point

-20°F to 158°F


Heat Index

-70°F to 130°F


Relative Humidity

5% to 95%


Barometric Pressure

22.1 to 32.5 inHg

±0.05 inHg


<19,700 ft.

±98 ft.

Air Flow

0 to 99,999 cfm


Weight:3.6 oz.
Wind speed and accuracy:0.8 to 89 mph +/- 3%
Temperature and accuracy:-20° to 158°F +/- 1.8°F
Wind chill and accuracy:-50° to 50°F +/- 1.8°
Dew point and accuracy:-20.0° to 158.0°F +/-3.6°F
Heat index and accuracy:70° to 130°F +/- 3.6°F
Relative humidity and acc:5% to 95% +/- 3%
Barometric press and acc:22.1 to 32.5 inHg +/- .05inHg
Altitude and accuracy:<19,700ft. +/-98ft.@77°F
Battery powered:Yes
Battery amount and type:2 AAA
Auto shut off:Yes
Protective carrying case:Yes
Replacement parts:Yes
Wind Meters Comparison Chart
  • Info Sheet - Specs for Kestrel ® 4200 Pocket Air Flow Tracker
  • Owner's Manual - Instruction Manual for Kestrel ® 4200 Pocket Air Flow Tracker