• Kestrel 3500DT Pocket Delta-T Crop Spraying Weather Meter - ExtremeMeters.com
  • Kestrel 3500DT Delta T Crop Spraying Meter
  • Kestrel 3500DT Pocket Delta-T Crop Spraying Weather Meter - ExtremeMeters.com
  • Kestrel 3500DT Pocket Delta-T Crop Spraying Weather Meter - ExtremeMeters.com
  • Kestrel 3500DT Pocket Delta-T Crop Spraying Weather Meter - ExtremeMeters.com
  • Kestrel 3500DT Pocket Delta-T Crop Spraying Weather Meter - ExtremeMeters.com

Kestrel 3500DT Pocket Delta-T Crop Spraying Weather Meter

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0835DT

$219.00 USD
$219.00 USD $273.00 USD
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  • Free Shipping in the USA
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  • Ships within 1 business day

Warranty

5 year manufacturers warranty.

Return Policy

45 Day Easy Returns

Product Includes
  • (1) CR2032 Lithium Battery
  • Instructions
  • Lanyard
  • Certificate Of Conformity (Spec Sheet)
  • Protective Cover - Hard Slip-on

Product Measures
  • Wind Speed
  • Current Wind Speed
  • Average Wind Speed
  • Maximum Wind Gust
  • Temperature
  • Barometric Pressure
  • Relative Humidity
  • Delta-T
  • Dew Point Temperature
  • Altitude (Barometric)
  • Wet Bulb Temperature (Psychrometric)
  • Pressure Trend
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  • Trusted by thousands worldwide
  • Excellent ratings on Google merchant reviews

Description

Kestrel 3500DT Delta-T Pocket Weather Meter – USA-Made, Essential Weather Data for Optimal Spraying Conditions – Waterproof, Floats, Includes 5-Year Warranty

The Kestrel 3500DT Delta-T Pocket Weather Meter is a professional-grade tool designed to provide accurate and comprehensive weather data, crucial for agricultural applications like crop spraying. Built in the USA, this reliable weather meter measures key environmental factors including wind speed, temperature, barometric pressure, relative humidity, dew point, and Delta-T—a critical value for assessing optimal spraying conditions. Whether you're a farmer, pest control professional, or field expert, the Kestrel 3500DT ensures you're always working within safe, effective conditions and helps you select the right spray nozzle for the job.

Why the Kestrel 3500DT is Perfect for Spraying Applications:

The Kestrel 3500DT Delta-T Pocket Weather Meter is specifically designed to help you assess optimal spraying conditions by measuring Delta-T and other critical environmental factors. By understanding Delta-T, you can ensure your spraying activities are within acceptable guidelines and choose the correct spray nozzle for optimal application, improving efficiency and reducing waste. Whether you're working in agriculture, pest control, or any outdoor setting, this meter provides all the data you need to make informed decisions for safer, more effective spraying.

    Features

    Delta-T for Optimal Spraying Conditions: The Delta-T measurement is essential for determining the best environmental conditions for spraying. By assessing Delta-T, you can accurately evaluate whether conditions are within safe guidelines for effective pesticide, herbicide, or fungicide applications. It also helps you select the right spray nozzle, ensuring that your application is both effective and efficient.

    Comprehensive Weather Data: In addition to Delta-T, the Kestrel 3500DT measures wind speed, temperature, barometric pressure, relative humidity, dew point, altitude (barometric), wet bulb temperature, and pressure trend, giving you all the data you need to make informed decisions during outdoor and agricultural operations.

    USA-Made Quality: The Kestrel 3500DT is designed and built in the USA, offering precision engineering and high-quality materials to ensure long-lasting, reliable performance.

    Waterproof & Floats: Fully waterproof and built to float, the Kestrel 3500DT is perfect for outdoor and water-based activities. Whether you're working in wet conditions or near water, you can rely on this durable device to deliver accurate readings.

    Easy-to-Use Operation: With its simple three-button operation, the Kestrel 3500DT is user-friendly, allowing you to quickly access all of its weather measurement features with ease.

    5-Year Manufacturer's Warranty:The Kestrel 3500DT comes with a 5-year manufacturer’s warranty, ensuring that you get a reliable, long-lasting instrument backed by the manufacturer’s commitment to quality.

    Compact & Portable: This lightweight and portable device fits easily in your pocket, making it ideal for professionals who need weather data on the go.

    Certificate of Conformity: Each Kestrel 3500 includes a certificate of conformity, confirming that it meets high standards of quality and provides precise, accurate measurements.

    Data Hold Mode: The Hold Mode is helpful for capturing measurements when you're unable to view the display in real-time.

    High-contrast monochrome LCD display: Easily readable in direct sunlight.

    User-Replaceable Impeller: Every Kestrel Impeller is tested at high and low speeds. The impeller is easily replaced if needed.

    Slip-On Protective Cover: Keep your Kestrel protected when not in use with a hard cover that simply slides up the lanyard and over the Kestrel.

    Sensor Specifications

    Sensor Specifications

    Wind Speed
    Units of Measure: mph | kt | B | m/s | ft/min / km/h 
    Specification Range:
    • 0.6 to 40.0 m/s
    • 118 to 7,874 ft/min
    • 2.2 to 144.0 km/h
    • 1.3 to 89.5 mph
    • 1.2 to 77.8 knots
    • 0 to 12 B*
    • 2-131.2 F/S*
    Operational Range:
    • 0.6 to 60.0 m/s
    • 118 to 11,811 ft/min
    • 2.2 to 216.0 km/h
    • 1.3 to 134.2 mph
    • 1.2 to 116.6 knots
    • 0 to 12 B*
    • 2-196.9 F/S*
    Resolution:
    • 0.1 m/s
    • 1 ft/min
    • 0.1 km/h
    • 0.1 mph
    • 0.1 knots
    • 1 B
    Accuracy (+/-): Larger of 3% of reading, least significant digit or 20 ft/min
    Notes: 1 inch|25 mm diameter impeller with precision axle and low-friction Zytel® bearings. Startup speed stated as lower limit, readings may be taken down to 0.4 m/s | 79 ft/min | 1.5 km/h | .9 mph | .8 kt after impeller startup. Off-axis accuracy -1% @ 5º off-axis; -2% @ 10º; -3% @ 15º. Calibration drift < 1% after 100 hours use at 16 MPH | 7 m/s. Replacement impeller (PN-0801) field installs without tools (US Patent 5,783,753). Wind speed calibration and testing should be done with triangle on impeller located at the top front face of the Kestrel. *F/S only in Ballistics units. Beaufort not available in Ballistics units.

    Ambient Temperature
    Units of Measure: Fahrenheit, Celsius
    Specification Range:
    • -20.0 to 158.0 °F
    • -29.0 to 70.0 °C
    Operational Range:
    • 14.0.0 to 131.0 °F
    • -10.0 to 55.0 °C
    Resolution:
    • 0.1 °F
    • 0.1 °C
    Accuracy (+/-):
    • 0.9 °F
    • 0.5 °C
    Notes: Hermetically sealed, precision thermistor mounted externally and thermally isolated (US Patent 5,939,645) for rapid response. Airflow of 2.2 mph|1 m/s or greater provides fastest response and reduction of insolation effect. Calibration drift negligible. Thermistor may also be used to measure temperature of water or snow by submerging thermistor portion into material -- remove impeller prior to taking submerged measurements and ensure humidity sensor membrane is free of liquid water prior to taking humidity-based measurements after submersion.

    Pressure
    Units of Measure: inHg, hPA, mb
    Specification Range:
    • 25°C/ 77°F
    • 750-1100 hPa|mbar
    • 22.15-32.48 inHg
    • 10.88-15.95 PS
    Operational Range:
    • 0.30 to 48.87 inHg
    • 10.0 to 1654.7 hPa|mbar
    • 0.14 to 24.00 PSI
    • 14.0 to 131.0 °F -10.0 to 55.0 °C
    Resolution:
    • 0.1 hPa|mbar
    • 0.01 inHg
    • 0.01 PSI
    Accuracy (+/-):
    • 1.5 hPa|mbar
    • 0.044 inHg
    • 0.022 PSI
    Notes: Monolithic silicon piezo-resistive pressure sensor with second-order temperature correction. Between 1100–1600 mbar, unit will operate with reduced accuracy. Sensor may not operate above 1600 mbar and can be damaged above 6,000 mbar or below 10 mbar. Calibration drift is negligible for the life of the product.

    Relative Humidity
    Units of Measure: %
    Specification Range: 5 to 95% 25°C non-condensing
    Operational Range: 0 to 100% 
    Resolution: 0.1 %RH
    Accuracy (+/-): 3%RH
    Notes: To achieve stated accuracy, unit must be permitted to equilibrate to external temperature when exposed to large, rapid temperature changes and be kept out of direct sunlight. Calibration drift is typically less than ±0.25% per year.

    Calculated Measurements

    Barometric Pressure
    Accuracy (+/-):
    • 0.07 inHg
    • 2.4 hPa|mbar
    • 0.03 PSI
    Resolution:
    • 0.01 inHg
    • 0.1 hPa|mbar
    • 0.01 PSI
    Sensors employed:
    • Pressure
    • User Input (Reference Altitude)

    Altitude
    Accuracy (+/-):
    • typical: 23.6 ft/7.2 m
    • from 750 to 1100 mBar
    • max: 48.2 ft/14.7 m
    • from 300 to 750 mBar
    Resolution:
    • 1ft
    • 1m
    Sensors employed:
    • Pressure
    • User Input (Reference Pressure)

    Dew Point
    Accuracy (+/-):
    • 3.4 °F
    • 1.9 °C
    • 15-95% RH.
    • Refer to Range
      for Temperature Sensor
    Resolution:
    • 0.1 °F
    • 0.1 °C
    Sensors employed:
    • Temperature
    • Relative Humidity

    Wet Bulb Temperature - Psychrometric
    Accuracy (+/-):
    • 3.2 °F
    • 1.8 °C
    Resolution:
    • 0.1 °F
    • 0.1 °C
    Sensors employed:
    • Wind Speed
    • Temperature

    Delta T
    Accuracy (+/-):
    • 3.2 °F
    • 1.8 °C
    Resolution:
    • 0.1 °F
    • 0.1 °C
    Sensors employed:
    • Temperature
    • Relative Humidity
    • Pressure

    Downloads:

    Customer Testimonials

    Reviews by our customers

    • Greatest service ever!

      The equipment are in new and good condition. The shipping are really fast after making a payment, they send a package in next day. I am ordering product from Thailand. To be honest after comparing price, Extreme meter LLC is the best price in product and shipping fee.

      Lalitsinee Rtnpb.
      Technician

    • Urgent need for my K2 winter expedition.

      I needed urgent for my K2 winter expedition. I was on the last min and needed the goods to be sent in Iceland. Their chat online worked 100% and I was able to add on one extra peace even after I checkout. They send with UPS same day and I had the package 3 days later here in Iceland. Extreme Meters works and has good service I recommend them.

      John Snorri
      Adventurer

    • Couldn't be more pleased

      I ordered the Kestrel 3550FW meter. Received email notifications reporting the progression of my order up to delivery, which was much quicker than I'd expected. Couldn't be more pleased with the product and service.

      Heidi
      Wildland Firefighter

    • The service was prompt and cordial.

      The service was prompt and cordial. The Kestrel is used to measure wind velocity and temperature when applying pesticides for agriculture crop production. It is also used to measure weather conditions for livestock comfort.

      Arlyn Midtgaard
      Crop Management

    • Extreme Meters answered ALL my questions

      Extreme Meters answered ALL my questions, - were totally professional - were EXTREMELY respectful to me - were a REAL pleasure to chat with ALL BEFORE I PURCHASED THEIR PRODUCTS MOST SINCERE THANK YOU AND APPRECIATED

      Michael Larkins
      Weather Enthusiast

    • My order was in my mailbox before I knew it.

      The website was easy to navigate and placing an order was effortless. Shipping was extremely quick. My order was in my mailbox before I knew it. I started to use the meter immediately; it is excellent for my needs.

      Jane Doe
      Weather Enthusiast