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Kestrel 0835FWORA - 3500 Fire Weather Meter

Name: Kestrel 0835FWORA - 3500 Fire Weather Meter
Brand: Kestrel
SKU: Kestrel0835FWORA
Price: 199.00 USD
Availability: InStock

0 reviews | Model: Kestrel 0835FWORA

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3500 Fire Weather Meter

Wind Speed
Relative Humidity
Temperature
Wet Bulb Temperature (Psychrometric)
Altitude
Pressure Trend
Barometric Pressure
Heat Stress Index
Dew Point Temperature
Wind Chill

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Kestrel 0835FWORA

Wind Speed
Relative Humidity
Temperature
Wet Bulb Temperature (Psychrometric)
Altitude

3500 Fire Weather Meter

While the Standard Kestrel 3000 with Relative Humidity is the model that has made Kestrel a trusted brand among firefighters. The 3500 model is a more feature rich meter includes an easy to read and waterproof PIG (Probability of Ignition) and FDFM (Fine Dead Fuel Moisture) cards, Wet Bulb Temperature, altitude and barometric pressure. This fast and accurate device is a great options for firefighters looking for consistently precise measurements without the possibility of human error.

General Specifications
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% @ 5º off-axis; -2% @ 10º; -3% @ 15º. 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 PSI	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 secondorder 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 Employed
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	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 and 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	10.1 °F 0.1 °C	Temperature Relative Humidity Pressure
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 Pressure
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
Relative Air Density	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. Data capacity shown.
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)