{"product_id":"kestrel-4400bnv-heat-stress-tracker-w-night-vision-bluetooth-desert-tan","title":"Kestrel 4400BNV Heat Stress Tracker w-Night Vision \u0026 Bluetooth - Desert Tan","description":"\u003cb\u003e4400 Heat Stress Meter\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe Kestrel 4400 is revolutionary in size, cost and capability for those in need of measuring Heat Stress.\u003cbr\u003e\u003cbr\u003eAlong with having a Wet Bulb Global Temperature reading, the Kestrel 4400 displays thermal work limit (TWL), another recognized composite heat stress prediction tool. For both WBGT and TWL, the Kestrel 4400 provides on-screen alarms when conditions enter the caution and danger zones, providing clear and immediate guidance that heat illness prevention steps must be taken.  Clothing levels can also be customized, making the Kestrel 4400 particularly useful in activities requiring heavy protective gear which worsens heat stress.  The Kestrel 4400 also displays natural wet bulb temperature, and black globe temperature.\u003cbr\u003e\u003cbr\u003eAthlete deaths from heat exposure are on the rise.   Warming summers have been accompanied by weekly reports of athletes young and old collapsing from severe heat-induced illness.  Our military training units struggle to keep soldiers healthy while preparing them for the grueling heat of Iraq and Afghanistan.  OSHA is campaigning to prevent heat illness in outdoor workers and reports that every year thousands of workers become sick working in the heat, and some even die.   In every instance, accurate and localized measurement of heat stress conditions is a key component of a heat illness prevention plan.  The Kestrel 4400 Heat Stress Tracker answers this need. \u003cbr\u003e \u003cbr\u003eHuman heat stress results from a combination of many environmental factors - air temperature and humidity along with radiant heat from the sun and surfaces, balanced by the cooling effect of breezes or air flow. Anyone who has stood under welcome shade adjacent to a sizzling parking lot understands that these conditions must be evaluated exactly where peoples' activities are taking place.  The most common composite measurement used to determine appropriate exposure to heat stress conditions is Wet Bulb Globe Temperature or WBGT.  The American College of Sports Medicine, the American Conference of Governmental Industrial Hygienists, and the US Military all have published threshold limit values (TLVs) or reference guidelines for conditions, activity levels and hydration based on WBGT, clothing levels and acclimatization of participants.\u003cbr\u003e \u003cbr\u003e\u003cb\u003eHow Does the Kestrel 4400 Work?\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eThe Kestrel 4400 uses a 1-inch black globe to gather information about the environment.  As is true with the original Wet Bulb Globe Temperature apparatus, a temperature sensor is installed inside the globe that will measure the temperature inside. The temperature inside the globe is a function of the ambient air temperature, solar insolation and wind speed.\u003cbr\u003e \u003cbr\u003eAs one can imagine, a sunny day will make the globe hotter because it's painted black, and colder ambient temperatures will have a tendency to cool off the globe. Lastly, the wind will cause the globe to get closer to the ambient air temperature because it will carry heat away from the globe when the air is cooler, or increase heat transfer to the globe if the air is warmer than the globe.\u003cbr\u003e \u003cbr\u003eThe Kestrel must sit out for a period of time to allow the globe to adjust to true atmospheric conditions; we recommend a minimum of 7-10 minutes. The globe temperature is then taken into account along with other measurements, such as ambient temperature, humidity and pressure, to calculate more meaningful measurements, such as Wet Bulb Globe Temperature and Thermal Work Limit.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eCustomized Warning Zones\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eUsers from different work environments or different standards around the world have the ability to create their own warnings on the Kestrel 4400.  With the user friendly functionality, the user may  go into the Kestrel 4400's WBGT function and turn different warning zones on or off and set these warning zones to be triggered at different degrees as the temperature rises. By customizing the Kestrel 4400's WBGT warning zones, monitoring a team or crew becomes much more personal. A chart with suggested warning zones will be included with every Kestrel 4400 ordered. \u003cbr\u003e\u003cbr\u003e\u003cb\u003eMeasures:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003e Wet Bulb Globe Temperature (WBGT)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Thermal Work Limit (TWL)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Globe Temperature\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Naturally Aspirated Wet Bulb Temperature\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Wind Speed\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Max Wind Gust\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Average Wind Speed\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Temperature\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Wind Direction\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Crosswind\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Headwind\/tailwind\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Altitude\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Pressure trend\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Barometric pressure\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Relative humidity in %\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Heat stress index \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Dewpoint\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Wet bulb temperature\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Density altitude\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Wind chill\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Air, water, and snow temperature \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Current, average, and maximum air velocity\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003e Waterproof and floats\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Time and date\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Easy- to-read backlit display\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Data Logger (automatic and manual)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Customizable data storage - 2900 data points\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Minimum, Maximum and Average values\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Multi-Function 3-line display\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Humidity sensor can be recalibrated in the field with our Relative Humidity Calibration Kit\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Exterior temperature, humidity, and pressure sensors for fast and accurate readings\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Customize screens to display user-selected measurements\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Graph and recall trends\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e User-replaceable impeller\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Flip-top impeller cover allows use of other functions while protecting the impeller\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Data charting\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Upload to a computer (with optional interface)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Meets MIL-STD-810F 516.5 Procedure IV Transit Shock test - 20 drops from 5 ft. IP-67 sealed to exclude dust and water at 3 ft. submersion\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Five languages (English, French, Spanish, German, and Italian)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Assembled in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cb\u003eHere are just a few of the markets that need to reference WBGT for work or play: \u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003e Athletes (highschool, college, professional)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Athletic trainers \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Military training units \u0026amp; medics\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Law enforcement medics \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Industrial hygienists\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Construction supervisors \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Others working in extreme heat conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cb\u003eKestrel Meter 4400 Includes:\u003c\/b\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003e Batteries - 2 AAA\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e Vane Mount\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e A chart with suggested Heat Stress warning zones\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!--- cis:zeApfl3OD+g= ---\u003e\u003cbr\u003e \u003cb\u003eProduct : \u003c\/b\u003eKESTREL 4400BNV HEAT STRESS TRACKER W\/ BLUE TOOTH DESERT T\u003cbr\u003e \u003cb\u003eManufacturer : \u003c\/b\u003eKESTREL\u003cbr\u003e \u003cb\u003eManufacturer Part No  : \u003c\/b\u003e0844BNVTAN","brand":"CWR","offers":[{"title":"Default","offer_id":991319744,"sku":"CW47698","price":955.9,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7661\/products\/CW47698_5759bfca-2bdb-4a7e-9cdf-005f25a095b4.jpeg?v=1575942594","url":"https:\/\/shop.birdseyeblue.com\/products\/kestrel-4400bnv-heat-stress-tracker-w-night-vision-bluetooth-desert-tan","provider":"Birds Eye Blue.com","version":"1.0","type":"link"}