Kestrel 4000 Pocket Weather Tracker

$189.00

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SKU: PA-PFT-XXX-WXMETER-K4000-XXX-XXX-XXX Category:

Description

The Kestrel 4000 Pocket Weather Tracker is a convenient, versatile, easy-to-use handheld device that accurately measures a wide range of weather information no matter where you are, and includes advanced features of particular interest to pilots. More advanced than the 2500 Weather Meter, the 4000 can measure, calculate, and record conditions including:

  • Current, Maximum, and Average Wind Speeds
  • Air, Water & Snow Temperature
  • Wind Chill
  • Barometric Pressure
  • Altitude
  • Density Altitude
  • Dewpoint
  • Heat Stress Index
  • Relative Humidity
  • Wet Bulb Temperature

The Kestrel 4000 has advanced functionality that makes it a premiere portable weather tracking tool:

  • Graph and recall trends
  • Customize screens to display user-selected measurements
  • Automatically store measurements, even when the unit is turned off
  • Manually store measurements with the press of a button
  • Chart up to 2,000 measurements
  • Exterior temperature, humidity, and pressure sensors for fast and accurate readings
  • Humidity sensor can be recalibrated in the field with a kit available from the manufacturer

The sensitive wind impeller can measure winds from a barely-noticeable draft up through a major hurricane, and is protected by a flip-up cover for improved protection while you use other functions. The cover and impeller are both replaceable without tools if necessary.

Other features of the Kestrel 4000 include:

  • Real-time clock and calendar
  • Protective cover with sure-grip overmolding
  • Data hold function
  • Large easy-to-read display with backlight
  • Unit is waterproof and floats
  • Includes neck and wrist lanyards
  • Includes protective pouch
  • Alkaline batteries (2 x AAA) included
  • Battery life: ±400 hours (depending on backlight usage)

In addition, the Kestrel 4000 Weather Tracker also has the ability to interface with a computer (USB Interface available in a separate listing) which will allow you to record, track, and analyze data over the long term on your PC. You can also purchase a carrying case and a tripod to allow hands-free operation (both items are available in separate listings).

This unit carries a two year manufacturer warranty and all components and accessories are assembled completely in the USA. Available in your choice of gray, orange or olive.

KESTREL 4000 POCKET WEATHER TRACKER – SPECIFICATIONS
MEASUREMENT RESPONSE
TIME		 UNITS OPERATIONAL
RANGE		 RESOLUTION ACCURACY
(±)		 SPECIFICATION
RANGE
Wind Speed (Air Velocity) 1 second m/s 0.4 to 60.0 m/s 0.1 Larger of 3% of
reading or least
significant digit		 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 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 kt
Beaufort 0 to 12 B 0.1 0 to 12 B
1 inch diameter impeller with precision axle and sapphire bearings. Off-axis accuracy -1% @ 5° off-axis; -2% @ 10°; -3% @ 15°. Calibration drift <1% after 100 hours of 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) may be 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).
Barometric Pressure 1 second inHg 8.86 to 32.48 inHg 0.01 0.05 inHg At 77.0 °F, Below 19,700 ft
hPa / mb 300.0 to 1100.0 hPa / mb 0.1 1.5 hPa / mb At 25.0 °C, Below 6,000 m
PSI 4.4 to 16.0 PSI 0.1 0.1 PSI At 77.0 °F, Below 19,700 ft
Monolithic silicon piezoresistive pressure sensor with second-order temperature correction. Maximum error beyond specified temperature, ± 0.09 inHg / 3.0 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, Below 19,700 ft. Max error ±98 ft
m -2000 to 9000 m 1 15 m At 25.0 °C, Below 6,000 m. Max error ±30 m
Temperature compensated pressure (barometric) altimeter.
Wind Chill 1 second °F 0.7 to 135.0 MPH, -49.0 to 257.0 °F 0.1 1.8 °F 1.8 to 89.0 mph, -50.0 to 50.0 °F
°C 0.4 to 60.0 m/s, -45.0 to 125.0 °C 0.1 1.0 °C 0.4 to 40 m/s, -45.6 to 10.0 °C
Calculated from the primary measurements of wind speed and temperature. Utilizes the NWS Wind Chill Temperature (WCT) Index, revised 2001, with wind speed adjusted by a factor of 1.5 to yield equivalent results to wind speed measured at 10 m above ground. (Specification temperature limits established by WCT Tables.)
Heat Index 1 minute °F 0.0 to 100.0 %RH, -49.0 to 257.0 °F 0.1 3.6 °F 70.0 to 130.0 °F, 0 to 100% RH
°C 0.0 to 100.0 %RH, -45.0 to 125.0 °C 0.1 2.0 °C 21.1 to 54.4 °C, 0 to 100 %RH
Calculated from the primary measurements of wind speed, wind direction and target heading. Auto-switching headwind/tailwind indication. Ranges expressed refer to primary wind speed.
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, Below 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, Below 6000 m
Calculated from the primary measurements of temperature, relative humidity and pressure. Temperature indicated by a wet bulb psychrometer.
Density Altitude 1 second ft -49.0 to 257.0 °F, 0.0 to 100.0 % RH,
8.86 to 32.48 inHg		 1 246 32.0 to 100.0 °F, 5.0 to 95.0 %RH,
8.86 to 32.48 inHg, Below 19700 ft
m -45.0 to 125.0 °C, 0.0 to 100.0 %RH,
300.0 to 1100.0 hPa		 1 75 0.0 – 37.8 °C, 5.0 to 95.0 %RH,
-2000 to 9000 hPa, Below 6000 m
Calculated from the primary measurements of temperature, relative humidity and pressure. Air density converted to equivalent sea level elevation at the International Standard Atmosphere.
Max./Avg. Wind Speed (Air Velocity),
Crosswind, Headwind/Tailwind		 One-button clear and restart of Maximum Wind Gust and Average Wind measurement
Data Storage / Display Minimum, maximum, average and logged history stored and displayed for every measured value. 2000-point data logger with graphical display. Auto data storage; interval settable from 2 seconds to 12 hours. Manual data capture.
Data Upload Requires optional PC interface (NK PN-0830) and provided software. RS-232 connection with USB adapter available.
Display Multifunction, multi-digit programmable dot-matrix display.
Display Update time: 1 second
Display Backlight Choice of aviation green or visible red electroluminescent backlight (4000NV model with red backlight is available by special order.) Automatic or manual activation.
Clock / Calendar Real-time hours:minutes:seconds clock, calendar, automatic leap-year adjustment
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 User-selectable: 15 or 60 minutes with no key presses or disabled
Languages English, French, German, Italian, Spanish
Certifications CE certified. Individually tested to NIST-traceable standards (written certificate of tests available from manufacturer at additional charge)
Batteries AAA Alkaline, two, included. Average life, 400 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: 5.0 x 1.8 x 1.1 in / 12.7 x 4.5 x 2.8 cm
Weight Unit: 3.6 oz / 102 g

Additional information

Color Options

Gray, Olive, Orange

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