Indispensable in agriculture, the Kestrel 3500 Delta T wind meter includes all Kestrel 3500 and adds in one additional reading, Delta T. Delta T is the spread between the wet bulb temperature and the dry bulb temperature (in degrees C), offering a quick guide to determining acceptable spraying conditions. For example, it is not recommended to apply pesticides when Delta T is above 10 - a range of 2 to 8 is ideal. With the Kestrel 3500 Delta T, the calculation is done for you, accurately and simply.

The Kestrel 3500 Delta T incorporates barometric pressure correction in its wet bulb temperature calculation, ensuring accuracy even on low pressure days, at high altitudes, and in the very dry weather when Delta T monitoring is important. No other pocket weather meter offers this feature with such a high level level of accuracy.

Kestrel 3500 is also available in Night Vision and Standard versions.