Kestrel 5400FW Fire Weather Meter Pro WBGT, LiNK, Compass, Vane & Mount

Firefighters train to withstand the challenge of heavy exertion in extreme conditions. Excessive heat is a constant companion, and protective clothing and equipment increases the physical strain. Heat acclimatisation through training is a key aspect but doing so without incurring heat illness or injury is equally critical and challenging, using Wet Bulb Globe Temperature (WBGT) measurements and introducing work, rest and hydration guidelines is an essential element.

Using WBGT is a more effective measure of heat stress for the firefighter because it includes the effects of radiant heat from the sun, fire, or hot surfaces. The Kestrel Fire Weather Meter PRO WBGT monitors WBGT and fire weather during training and operations. With pre-programmed ACGIH guidelines and alert settings to indicate when conditions have become extremely unsafe, the Kestrel Fire Weather Meter PRO with WBGT is the ultimate tool for increasing the safety of your crew.

The Kestrel 5400FW also calculates and logs over 10,000 sets of time-stamped data.

The Kestrel 5400FW has Bluetooth connectivity allowing you to transfer data wirelessly to an iOS (iPhone, iPad) device or Android smartphone or tablet when within range using the appropriate Kestrel LiNK App. You can also transfer data wirelessly to a Windows or Mac computer using the optional Kestrel Bluetooth USB Dongle (sold separately). Data can be viewed live on the App up to 100 feet away (line of sight).

When combined with the Kestrel Vane Mount and Kestrel Tripod the Kestrel 5400FW becomes a stand-alone environmental monitoring station as the large wind vane and precision pivot keep the Kestrel oriented into the wind for continuous measurement and logging of all the key environmental parameters including wind speed, direction, temperature, humidity, pressure, dew point, elevation, density altitude, PIG, FDFM and more at the exact location required.

Mil-SPEC-810G drop tested with an IP67 waterproof rating the Kestrel 5400FW is designed and constructed to withstand the harsh treatment it will receive in the agricultural industry. The unit comes with a five-year warranty and certificate of conformity as standard.

Features

• Large easily read high resolution, high contrast display with backlight
• Time & Date
• Customize screens to display user-selected measurements
• Graph & recall trends
• Min, Max & Average values
• Automatically store measurements, when powered on or off
• Manually store measurements with the press of a button
• Customizable data storage – 10,000 data points
• Data charting
• Optional LiNK connectivity powered by Bluetooth® low energy provides wireless communication to mobile devices and computers
• Data upload to iOS & Android phones & tablets
• Data upload to Windows & Mac computers via wireless Bluetooth (LiNK Enabled Meters only with the optional Kestrel Dongle)
• Standard user-replaceable AA Lithium Battery (Average Life 400 Hours)
• Drop tested to MIL-STD-810G standards (10 drops from 4′)
• Waterproof and dustproof (sealed to IP67 standards – 30′ submersion to 3′)
• Certificate of Conformity
• Neck Lanyard
• Patented Impeller and Sensor Technology (user-replaceable)

Specification

Sensor	Accuracy (+/-)	Resolution	Specification Range	Notes
Wind Speed | Air Flow	Larger of 3% of reading, least significant digit or 20 ft/min	0.1 m/s 1 ft/min 0.1 km/h 0.1 mph 0.1 knots 1 B* 0.1 F/S*	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*	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% @ 5° off-axis; -2% @ 10°; -3% @ 15°. Calibration drift < 1% after 100 hours use at 16 MPH | 7 m/s. Replacement impeller (NK 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. Measuring wind speeds above 60 m/s / 134.2 mph can damage the impeller. *F/S only in Ballistics units. Beaufort not available in Ballistics units.
Ambient Temperature	0.9 °F 0.5 °C	0.1 °F 0.1 °C	-20.0 to 158.0 °F -29.0 to 70.0 °C	Airflow of 2.2 mph|1 m/s or greater provides fastest response and reduction of insolation effect. For greatest accuracy, avoid direct sunlight on the temperature sensor and prolonged sunlight exposure to the unit in low airflow conditions. Calibration drift is negligible for the life of the product. For further details, see Display & Battery Operational Temperature Limits
Relative Humidity	±2%RH	0.1 %RH	10 to 90% 25°C non-condensing	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.
Pressure	±1.5 mbar at 25°C, 700-1100 mbar/ ±0.044inHg at 77°F 20.67-32.48 inHg/ ±0.022 PSI 10.15-15.95 PS	0.01 inHg 0.1 hPa|mbar 0.01 PSI	25°C/77°F, 700-1100 mbar/20.67-32.48 inHg/10.15-15.95 PSI	Monolithic silicon piezoresistive pressure sensor with second-order temperature correction. Between 1100–1200 mbar, unit will operate with reduced accuracy. Sensor may not operate above 1200 mbar and can be damaged above 6,000 mbar or below 10 mbar. Calibration drift is negligible for the life of the product.
Compass	±5°	1° 1/16th Cardinal Scale	0 to 360°	2-axis solid-state magnetoresistive sensor mounted perpendicular to unit plane. Accuracy of sensor 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). Readout indicates direction to which the back of the unit is pointed when held in a vertical orientation. Declination/variation adjustable for True North readout.

 

Calculated Measurements

Measurement	Accuracy (+/-)	Resolution	Sensors Deployed
Air Density	0.0002 lb/ft3 0.0033 kg/m3	0.001 lbs/ft3 0.001 kg/m3	Temperature Relative Humidity Pressure
Air Flow	6.71%	1 cfm 1 m3/hr 1 m3/m 0.1m3/s 1 L/s	Air Flow User Input (Duct Shape & Size)
Altitude	typical: 23.6 ft/7.2 m – 50 to 1100 mBar max: 48.2 ft/14.7 m – 300 to 750 mBar	1 ft 1 m	Pressure User Input (Reference Pressure)
Barometric Pressure	0.07 inHg 2.4 hPa|mbar 0.03 PSI	0.01 inHg 0.1 hPa|mbar 0.01 PSI	Pressure User Input (Reference Altitude)
Crosswind & Headwind / Tailwind	7.1%	1 mph 1 ft/min 0.1 km/h 0.1 m/s 0.1 knots	Wind Speed Compass
Delta T	3.2 °F 1.8 °C	0.1 °F 0.1 °C	Temperature Relative Humidity Pressure
Density Altitude	226 ft 69 m	1 ft 1 m	Temperature Relative Humidity Pressure
Dew Point	3.4 °F 1.9 °C 15-95% RH. Refer to Range for Temperature Sensor	0.1 °F 0.1 °C	Temperature Relative Humidity
Evaporation Rate	0.01 lb/ft2/hr 0.06 kg/m2/hr	0.01 b/ft2/hr 0.01 kg/m2/hr	Wind Speed Temperature Relative Humidity Pressure User Input (Concrete Temperature)
Heat Index	7.1°F 4.0°C	0.1 °F 0.1 °C	Temperature Relative Humidity
Moisture Content | Humidity Ratio (“Grains”)	.3gpp .4g/kg	0.1 gpp 0.01 g/kg	Temperature Relative Humidity Pressure
Relative Air Density	0.3%	0.1%	Temperature Relative Humidity Pressure
Wet Bulb Temperature – Psychrometric	3.2 °F 1.8 °C	0.1 °F 0.1 °C	Temperature Relative Humidity Pressure
Wind Chill	1.6 °F 0.9 °C	0.1 °F 0.1 °C	Wind Speed Temperature

Additional Product Info

Display & Backlight	Multifunction, multi-digit monochrome dot-matrix display. Choice of white or red LED backlight.
Response Time & Display Update	Display updates every 1 second. After exposure to large environmental changes, all sensors require an equilibration period to reach stated accuracy. Measurements employing RH may require longer periods particularly after prolonged exposure to very high or very low humidity.
Data Storage & Graphical Display, Min/Max/Avg History	Logged history stored and displayed for every measured value. Manual and auto data storage. Min/Max/Avg history may be reset independently. Auto-store interval settable from 2 seconds to 12 hours, overwrite on or off. Logs even when display off except for 2 and 5 second intervals. Kestrel 5 series units hold over 10,000 data points.
Data Upload & Bluetooth® Data Connect Option	Wireless range up to 100ft. Connection requires optional USB data transfer cable or Kestrel Link Dongle or Kestrel LiNK app. Employs Kestrel Link protocol for data transmission with Link supported devices. (Kestrel LiNK for iOS/Android, Kestrel Link for PC/MAC).
Clock / Calendar	Real-time hours:minutes:seconds clock, calendar, automatic leap-year adjustment.
Auto Shutdown	User-selectable – Off, 15-60 minutes with no key presses.
Languages	English, French, German, Spanish.
Certifications	CE certified, RoHS and WEEE compliant. Individually tested to NIST-traceable standards.
Origin	Designed and manufactured in the USA from US and imported components. Complies with Regional Value Content and Tariff Code Transformation requirements for NAFTA Preference Criterion B.
Battery Life	AA Lithium, included. Up to 400 hours of use, reduced by backlight or Bluetooth radio transmission use.
Shock Resistance	MIL-STD-810g, Transit Shock, Method 516.5 Procedure IV; unit only; impact may damage replaceable impeller.
Sealing	Waterproof (IP67 and NEMA-6)
Display & Battery Operational Temperature Limits	14° F to 131° F | -10 °C to 55 °C Measurements may be taken beyond the limits of the operational temperature range of the display and batteries by maintaining the unit within the operational range and then exposing it to the more extreme environment for the minimum time necessary to take reading
Storage Temperature	-22.0 °F to 140.0 °F | -30.0 °C to 60.0 °C.
Size & Weight	5.0 x 1.9 x 1.1 in / 12.7 x 4.5 x 2.8 cm, 4.3 oz / 121 g. (Lithium battery included)

 

Documentation

Data sheet

• User Manual
• Certifcate of conformity
• Heat Index Reference