Designed specifically for agricultural professionals that spray crops, the Kestrel 3500 Delta T Weather Meter provides several agriculture specific measurements including the Delta T. Delta T is the spread between the wet bulb temperature and the dry bulb temperature, offering a quick guide to determining acceptable spraying conditions. When you know Delta T, you ensure that every drop of spray counts and that you are staying within spraying regulations.
Environmental Measurements
- Altitude (Barometric)
- Barometric Pressure
- Delta T
- Dew Point Temperature
- Heat Stress Index
- Pressure Trend
- Relative Humidity
- Temperature (Air and Water)
- Wet Bulb Temperature (Psychrometric)
- Wind Chill
- Wind Speed/Air Speed
Designed with the farming community in mind, the Kestrel 3500 Delta T is effective in many agriculture specific measurements. The easy to use menu system quickly scrolls through all environmental measurement conditions. The Kestrel 3500 Delta T has an external temperature sensor with a waterproof casing that allows you to gauge the temperature of water, snow, and the open air. The sensitive and user-replaceable impeller provides accurate wind speed info. A hard slide-on case, lanyard, and battery are included.
The Kestrel Meter 3500 Weather Meter Features
- Air, water, and snow temperature
- Average wind speed
- Maximum wind gust
- Real-time clock
- Waterproof
- Large easy-to-read display with backlight
- Data hold function
- High precision pressure sensor
- Quick response, external thermistor
- Forecast weather with pressure trend indicator
- Humidity sensor that can be recalibrated in the field with our Relative Humidity Calibration Kit.
- Innovative, thermally adjusted humidity sensor designed for stability and accuracy in abrupt condition changes
- Patented user-replaceable impeller
- Reliable, portable and easy to use
- Protective cover with sure-grip overmolding
- All instruments and accessories are completely assembled in the USA

Kestrel Meter 3500 Delta T Additional Information
- Kestrel 3500 Delta T Instruction Manual (PDF)
- Important Safety and Product Information (PDF)
- Kestrel Meters Detailed Specs / Certificate of Conformity (All Meters, PDF)
- Kestrel Meters Catalog
- Kestrel Meters Agriculture Catalog
- RoHS Compliance
- Dimensions: 4.8 x 1.7 x 0.7 in. / 122 x 42 x 18 mm
- Weight: 2.3 Ounces / 65 Grams
- Model: Kestrel 3500DT Part # 0835DT