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Kestrel 0845HNVOLV Horus Vision Kestrel 4500NV Pocket Weather Tracker - Olive Drab

Kestrel 0845HNVOLV

Kestrel-0845HNVOLV
 
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Kestrel 0845HNVOLV
         
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Horus Vision Kestrel 4500NV Pocket Weather Tracker - Olive Drab

Features

  • Waterproof and floats
  • Time and date
  • Easy- to-read backlit display
  • Data Logger (automatic and manual)
  • Customizable data storage - 1400 data points
  • Minimum, Maximum and Average values
  • Multi-Function 3-line display
  • Humidity sensor can be recalibrated in the field with our Relative Humidity Calibration Kit
  • Exterior temperature, humidity, and pressure sensors for fast and accurate readings
  • Customize screens to display user-selected measurements
  • Graph and recall trends
  • User-replaceable impeller
  • Flip-top impeller cover allows use of other functions while protecting the impeller
  • Data charting
  • Upload to a computer (with optional interface)
  • Five languages (English, French, Spanish, German, and Italian)
  • US Patent Nos. 5,783,753 and 5,939,645 and 6,257,074
  • All instruments and accessories are completely assembled in the USA
  • 5-year warranty
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List Price: $619.00
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Product Information

The Kestrel 4500 Pocket Weather Tracker is Kestrel's flagship meter. Capable of monitoring and reporting an exhaustive list of environmental parameters – from temperature to barometric pressure, dewpoint, wind chill, and more, the Kestrel 4500 is the most feature-rich pocket weather meter in the entire Kestrel catalog. And now, the Kestrel 4500, as well as the entire Kestrel 4000 series, is available with Bluetooth Technology, allowing you to communicate wirelessly and transmit and log your data automatically.

In addition to the Kestrel 4000's extensive list of capabilities, the Kestrel 4500 has these distinct monitoring functions:

  • Digital Compass
  • Wind Direction
  • Crosswind
  • Headwind / Tailwind

 

These added features make the 4500 the Kestrel Meter of choice for military professionals, HAZMAT teams, and flight crews. Like all the pocket weather meters in the Kestrel 4000 series, the Kestrel 4500 is capable of storing and charting up to 1400 data points for later analysis.

  • If you select the Bluetooth model, your meter includes custom communication software designed to quickly and easily configure your data transmission frequency, download logged data, graph data and transfer data to other applications. You no longer need to purchase an interface separately, the new Kestrel Meters with Bluetooth include the software necessary to communicate wirelessly at a range of up to 30-feet.
  • For military professionals, the Olive Drab NV version of the Kestrel 4500 features a night-vision preserving backlight. Backlight incorporates optical filter to reduce overall brightness and minimize blue and green spectrum light to preserve night vision. (Note: This backlight appears soft greyish pink, not "red", and is still in the visible spectrum, so is not compatible with night-vision equipment.)

 

Weekend shooters and military snipers alike have been calling for a Kestrel Meter with crosswind calculation for years — and the Kestrel 4500 meets that demand completely. The elite Kestrel 4500 has the most complete list of features in the entire Kestrel Meter family, with the only absent elements being the airflow and humidity ratio measurements available with the Kestrel 4200 Air Flow Tracker.

The Kestrel 4500 also measures:

  • Current Wind Speed
  • Max Wind Gust
  • Average Wind Speed
  • Temperature
  • Wind Chill
  • Relative Humidity
  • Heat Stress Index
  • Dewpoint Temp
  • Wet Bulb Temp
  • Barometric Pressure
  • Altitude
  • Density Altitude

 

For military professionals, the Olive Drab NV version of the Kestrel 4500 is equipped with a red night vision backlight. The backlight appears as a subdued, almost white-pink hue. This is not an issue with the meter - this is how the light is designed for optimal performance in low-light conditions.

NEW! Be sure to download Kestrel's 2007 release of Kestrel Communicator software, which makes any 4000-series Kestrel meter coupled with a Kestrel USB Interface or Serial Port Interface all the more powerful. Click here to learn more, or simply Download Now!

What's In The Box

  • Soft carry pouch
  • Neck lanyard
  • Batteries - 2 AAA
  • Kestrel Certificate of Conformity

Specifications

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 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% @ 5º off-axis; -2% @ 10º; -3% @ 15º. 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) may be field-installed without tools (US Patent 5,783,753).
Wind Direction / Forward Heading
1 second
° 360° 1 0 to 360°
Cardinal Points 360° 16 Points 0 to 360°
2-axis solid-state magnetoresistive sensor mounted perpendicular to unit plane to permit operation while measuring wind speed. Declination/variation adjustable for True North readout. Accuracy of measurements dependent upon unit's vertical position. Self-calibration routine eliminates magnetic error from batteries or unit and must be run after every full power-down (battery removal or change).
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.
Crosswind Headwind, Tailwind
1 second
mph 0.8 to 135.0 mph 1 5% 8.5 to 89.0 mph
ft/min 59 to 11,880 ft/min 1 5% 750 to 7832 ft/min
km/h 1.0 to 217.3 km/h 0.1 5% 13.7 to 143.2 km/h
m/s 0.4 to 60.0 m/s 0.1 5% 3.8 to 40.0 m/s
knots 0.6 to 117.3 kt 0.1 5% 7.4 to 77.0 kt
Calculated from the primary measurements of wind speed, wind direction and target heading. Auto-switching headwind/tailwind indication. Ranges expressed refer to primarywind speed.
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 temperature and relative humidity. Utilizes the NWS Heat Index (HI) tables. (Specification temperature limits established by HI tables.)
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.
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, <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, <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 Max Wind Gust and Average Wind measurement.
Data Storage / Display Minimum, maximum, average and logged history stored and displayed for every measured value. 1400-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 1 second.
Display Backlight Choice of aviation green or visible red electroluminescent backlight. 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 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.
Shipping Weight 0.5kgs

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