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  • Kestrel-3500-DeltaT - Waterproof Delta T Pocket Wind Meter

    Product Code: Kestrel-3500-DeltaT

    Waterproof Delta T Pocket Wind Meter

    1 in stock
    Additional 1 year product warranty!
    Replacement Impeller
    $445.45 ex. GST
    $490.00 inc. GST
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    Need help? Call our scientists & select with confidence
    Phillip - 19th Jul 19
    “The professional advice, technical knowledge, competitive prices and fast service are why I will deal with Instrument Choice again.”
    Phillip - 19th Jul 19
    Product Description
    Product Description

    Ensure safety and effectiveness during agricultural spraying with the Kestrel 3500 Delta T.

    To ensure safety and effectiveness when spraying, it is critical tomeasure relative humidity, wind speed and wind direction. Many localesregulate the maximum permitted wind speed during spraying to minimizespray drift. In hot, dry conditions, expensive chemicals may evaporateinto the air rather than onto your crops. However, you can minimizecostly evaporation by selecting an appropriate nozzle and increasingthe spray droplet size..

    Quickly & Accurately Calculates Delta T For You

    The Kestrel 3500 DT incorporates a Delta T calculation, the spreadbetween the wet bulb temperature and the dry bulb temperature (indegrees C). Delta T offers a quick guide to determining acceptablespraying conditions. For example, it is not recommended to applypesticides when Delta T is above 10 — a range of 2 to 8 is ideal. Withthe Kestrel 3500 Delta T, the calculation is done for you accuratelyand simply.

    The Kestrel 3500 Delta T incorporates barometric pressure correction inits wet bulb temperature calculation, ensuring accuracy even on lowpressure days, at high altitudes, and in very dry weather when Delta Tmonitoring is important. No other pocket weather meter offers thisfeature with this level of accuracy.

     What does the Kestrel 3500 measure?
    - Delta T
    - Wind speed (current, average, and maximum)
    - Temperature of air, water & snow in F or C
    - Relative humidity in %
    - Dewpoint
    - Barometric pressure
    - Altitude
    - Wet bulb temperature 

    Features
    - Real-time clock
    - Protective cover with sure-grip overmolding
    - Data hold function
    - Large easy-to-read display with backlight
    - Waterproof and floats
    - Measure environmental conditions quickly and accurately
    - Forecast weather with pressure trend indicator
    - Reliable, portable and easy to use
    - Innovative humidity sensor designed for stability and accuracy in abrupt condition changes
    - Thermally adjusted humidity sensor
    - Patented user-replaceable impeller
    - Quick response, external thermistor
    - High precision pressure sensor
    - Humidity sensor can be recalibrated in the field with our Relative Humidity Calibration Kit.
    - All instruments and accessories are completely assembled in the USA
    - 5 year warranty

    Specifications
    Kestrel 3500 Includes
    - A slip-on protective cover
    - Neck lanyard
    - CR2032 coin cell battery (Average life 300 hours)
    - Kestrel Certificate of Conformity 

     

     

    Measurement
    Response Time
    Units Operational Range Resolution Accuracy (+/-) Specification Range
    Wind Speed
    1 second 
    m/s 0.4 to 60.0 m/s 0.1   0.4 to 40.0 m/s
    ft/min 59 to 11,948 ft/min 1   59 to 7877 ft/min
    km/h 1.0 to 218.0 km/h 0.1 Larger of 3% of reading or least significant digit 1.0 to 144.0 km/h
    mph 0.8 to 135.0 mph 1   0.8 to 89.0 mph
    knots 0.6 to 118.3 kt 0.1   0.6 to 78.0 k
    Beaufort 0 to 12 B 0.1   0 to 12 B
    1 inch diameter impeller with precision axle and sapphire bearings. Calibration drift < 1% after 100 hours use at 16 MPH / 7 m/s.  Sustained operation above 60 MPH / 27 m/s will wear impeller rapidly and may cause destruction of impeller.  Replacement impeller (NK PN-0801) maybe field-installed without tools (US Patent 5,783,753).
    Temperature
    1 second
    F -49.0 to 257.0 F 0.1 1.8 ?F -20.0 to 158.0 F
    C -45.0 to 125.0 C 0.1 1.0 ?C -29.0 to 70.0 C
    Measures air, water and snow temperature.  Thermally isolated,hermetically sealed, precision thermistor mounted externally (US Patent 5,939,645).  Calibration drift negligible.
    Relative Humidity
    1 minute 
    %RH 0.0 to 100.0 % 0.1 3.0 %RH  5.0 to 95.0 % non-condensing
    Polymer capacitive humidity sensor mounted in thin-walled chamber external to case for rapid, accurate response (US Patent 6,257,074). (To achieve stated relative humidity accuracy, unit must be permitted to equilibrate to external temperature when exposed to large, rapid temperature changes and must be kept out of direct sunlight.) Calibration drift +/- 2% over 24 months. Relative humidity may be recalibrated at factory or in field using Kestrel Humidity Calibration Kit (NK PN-0802).
    Pressure  
    1 second  
    (mb & PSI 4000 model only)
    inHg 0.3 to 32.5 inHg 0.01 0.05 inHg At 77.0 ?F, 22.1 to 32.5 inHg
    hPa / mb 10.0 to 1100.0 hPa / mb 0.1 1.5 hPa / mb At 25.0 ?C, 750 to 1100 hPa / mb
    PSI 0.15 to 16.0 PSI 0.01 0.02 PSI At 77.0 ?F, 10.9 to 16.0 PSI
    Monolithic silicon piezoresistive pressure sensor with second-order temperature correction. Maximum error over temperature range 32 to 158?F (0 to 70?C) , +/- 0.06 inHg / +/-2.0 hPa. Calibration drift typically -0.03 inHg / -1.0 hPa per year. Pressure sensor may be recalibrated at factory or in field.
    Altitude  
    1 second 
    ft -6000 to 30000 ft 1 50 ft At 77.0 ?F, <19,700 ft. Max error +/- 98 ft
    m -2000 to 9000 m 1 15 m At 25.0 ?C, <6,000 m.  Max error +/- 30 m
    Temperature compensated pressure (barometric) altimeter. 
    Dewpoint  
    1 minute 
    F 0.0 to 100.0 %RH, -49.0 to 257.0 ?F 0.1 3.6 ?F -20.0 to 158.0 ?F, 20.0 to 95.0% RH
    C 0.0 to 100.0 %RH, -45.0 to 125.0 ?C 0.1 2.0 ?C -29.0 to 70.0 ?C, 20.0 to 95.0 %RH
    Calculated from the primary measurements of temperature and relative humidity. Temperature to which the air would need to be cooled at a constant pressure to become saturated.
    Wet Bulb Temperature 1 minute F -49.0 to 257.0 ?F, 0.0 to 100.0 %RH, 8.86 to 32.48 inHg 0.1 3.6 ?F 32.0 to 100.0 F, 5.0 to 95.0% RH, 8.86 to 32.48 inHg, <19700 ft
    C -45.0 to 125.0 ?C, 0.0 to 100.0 %RH, 300.0 to 1100.0 hPa 0.1 2.0 ?C 0.0 to 37.8 C, 5.0 to 95.0 %RH, -2000.0 to 9000.0 hPa, <6000 m
    Calculated from the primary measurements of temperature, relative humidity and pressure. Temperature indicated by a wet bulb psychrometer.
    Max/Avg Wind Speed One-button clear and restart of Max Wind Gust and Average Wind measurement.
    Pressure Trend Continuously updating three-hour barometric pressure trend indicator:  rising rapidly, rising, steady, falling, falling rapidly.
    Display Reflective 4 digit LCD.  Digit height 0.36 in / 9 mm.
    Display Update 1 second.
    Display Backlight Aviation green electroluminescent backlight.
    Clock / Calendar Real-time hours:minutes clock.
    Operational Temperature Range
    (LCD and Batteries)
    The operational temperature range of the liquid crystal display and batteries is 14 F to 131 F / -10 C to 55 C. Beyond the limits of the operational temperature range, the unit must be maintained within range and exposed for minimum time necessary to take reading.
    Storage Temperature -22 F to 140 F / -30 C to 60 C.
    Auto Shutdown After 45 minutes of no key presses.
    Certifications CE certified. Individually tested to NIST-traceable standards (written certificate of tests available at additional charge). 
    Batteries CR2032, one, included. Average life, 300 hours of use, +/-depending on backlight use.
    Environmental Waterproof (IP67 standard). Drop-tested (MIL.STD.810F; unit only. Substantial impact may damage replaceable impeller.).
    Dimensions Unit 4.8 x 1.7 x 0.7 in / 122 x 42 x 18 mm.  Case 4.8 x 1.9 x 1.1 in / 122 x 48 x 28 mm.
    Weight Unit 2.3 oz / 65 g.  Case 1.3 oz / 37 g.
      Why Instrument Choice Why Instrument Choice Why Instrument Choice Why Instrument Choice Why Instrument Choice

    Kestrel Meters are designed and manufactured at NK's facility in Boothwyn, Pennsylvania, and are individually calibrated at the time of manufacture. Every Kestrel Meter comes with a Certificate of Conformity to document the unit?s accuracy—all Kestrel measurements are traceable to the National Institute of Standards and Technology, ensuring the highest level of reliability.


    Warranty

    5 Years

     

     

    Many customers who viewed the WM-300 ended up purchasing the Kestrel-3500-DeltaT

    $445.45 AUD + GST
    $489.995 AUD Inc. GST
    1 in stock

     

    Have you seen a cheaper Grey Import online? You need to read this before purchasing:
     
    Kestrel meters from the USA do NOT come with a C-Tick, which is required to be imported to AU.
     
    Warranty without a C-Tick will not be covered through the AU distributor/Reseller and will not be their responsibility. In order to receive a unit with the required C-Tick, you must purchase it from an authorized Australian retailer/distributor. You cannot purchase these meters in the USA or anywhere else. If a meter is shipped to you from the USA, you risk the meter being destroyed at customs.
     
    All Kestrel meters supplied by Instrument Choice come with a C-Tick and we offer the full 5 year warranty

     

    Manuals and Datasheets
    Manuals and Datasheets

    Kestrel 3500 Delta T User's Manual Kestrel 3500 Delta T User's Manual (887 KB)

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    Delivery Details
    Delivery Details

    In stock items will be dispatched same day

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