7
Setting up the Relative Humidity recalibration routine
1. Follow the instructions for your model Kestrel.
Kestrel 4000-4600
»
In the main menu select System, then select Humidity Cal. In some older firmware versions, Humidity
Cal is found directly on the main menu.
»
Set Period to at least 60 minutes. Adding additional time, (up to 120 min) may improve calibration
accuracy.
»
Set RH Point 1 to 32.8
»
Set RH Point 2 to 75.3.
»
Do not press Start at this time.
Kestrel 3000-3500 (Three-Button)
»
With the unit turned off, press the center and left button at the same time to start the RH Calibration
routine. (if on, the unit may be turned off by holding down the center button)
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With P1 showing, press the center button again to bring up the first calibration point value. Scroll till
32.8 is showing, then press the center button.
»
With P2 showing, press the center button again to bring up the second calibration point value. Scroll till
75.3 is showing, then press the center button.
»
Do not press any additional buttons at this time.
Kestrel 3000 (Two-Button)
»
With the Kestrel turned on and displaying the Dew Point measurement (not Relative Humidity), press
the On and Mode button at the same time for approximately 6 seconds to set to the RH calibration
values. The screen will display P1.
