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home > Kestrel 3500FW Fire Weather Meter > Kestrel 3500FW Fire Weather Meter

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Kestrel 3500FW Fire Weather MeterKestrel 3500FW Description When fighting urban and wildfires and protecting lives and property while ensuring safety for everyone involved demands accurate fire behaviour predictions based upon quality environmental data. Kestrel weather meters have been relied upon by fire fighters for decades to provide fast, accurate measurement of wind speed, temperature and humidity. The Kestrel 3500 Fire Weather Meter has been updated specifically for the

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Kestrel 3500FW Description

When fighting urban and wildfires and protecting lives and property while ensuring safety for everyone involved demands accurate fire behaviour predictions based upon quality environmental data. Kestrel weather meters have been relied upon by fire fighters for decades to provide fast, accurate measurement of wind speed, temperature and humidity. The Kestrel 3500 Fire Weather Meter has been updated specifically for the firefighting market, adding barometric pressure, altitude and wet bulb readings with an easy-to-read Probability of Ignition (PIG) and Fine Dead Fuel Moisture (FDFM) reference card that comes with every unit. This single handheld instrument replaces all the items included in your Belt Weather Kit, providing consistently accurate measurements without prepping a sling psychrometer or risking the possibility of human error.

Mil-SPEC-810G drop tested with an IP67 waterproof rating the Kestrel 3500FW is designed and constructed to withstand the harsh working environment it will encounter. The unit comes with a five-year warranty and certificate of conformity as standard.

Features

• Kestrel Waterproof PIG (Probability of Ignition) Reference Card Included
• Simple 3-Button Control
• Large easily read LCD display with backlight
• Standard user replaceable CR2032 Coin Cell Battery (Average Life 300 Hours)
• Data Hold Function
• Drop-Tested (MIL-STD-810F)
• Certificate of Conformity
• Neck Lanyard
• Patented Impeller and Sensor Technology (user-replaceable)
• Slip-On/Off Protective Cover
• Time of Day
• Waterproof & Floats
• 5 Year Warranty

Specification

Primary Measurement	Units	Resolution	Accuracy (+/-)	Range: Max Operational Specification (if less)	Notes
Wind Speed or Air Velocity	m/s	0.1	Larger of 3% of reading, least significant digit or 20 ft/min	0.6 to 60.0 m/s 0.6 to 40.0 m/s	1 inch diameter impeller with precision axle and low-friction Zytel® bearings. Start-up 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 start-up. 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).
	ft/min	1		18 to 11,811 ft/min 118 to 7,874 ft/min
	km/h	0.1		2.2 to 216.0 km/h 2.2 to 144.0 km/h
	mph	0.1		1.3 to 134.2 mph 1.3 to 89.5 mph
	knots	0.1		1.2 to 116.6 knots 1.2 to 77.8 knots
	Beaufort	1		0 to 12 B
Temperature	°F	0.1	1.8 °F	-49.0 to 257.0 -20.0 to 158.0	Air, water or snow temperature. Hermetically-sealed, precision thermistor mounted externally and thermally isolated (US Patent 5,939,645) for rapid response. Airflow of 2.2 mph \| 1 m/s or greater provides fastest response and reduction of insulation effect. Calibration drift negligible.
Temperature	°C	0.1	1.0 °C	-45.0 to 125.0 -29.0 to 70.0
Relative Humidity	%RH	0.1	3.0 %RH	0.0 to 100.0% 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 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 +/- 2% over 24 months. RH may be recalibrated at factory or in field using Kestrel Humidity Calibration Kit (NK PN-0802).
Pressure	inHg	0.01	typical 0.04 inHg max 0.07 inHg	0.30 to 32.48 inHg	Air pressure at the location. Adjustable reference altitude allows display of station pressure or barometric pressure corrected to MSL. Monolithic silicon piezoresistive pressure sensor with second-order temperature correction. Pressure sensor may be recalibrated at factory or in field. Kestrel 2500 and 3500 display continuously updating three-hour barometric pressure trend indicator: rising rapidly, rising, steady, falling, falling rapidly. Kestrel 4000 series displays pressure trend through graphing function.
Pressure	hPa (mb)	0.1	typical 1.5 hPa max 2.5 hPa	300.0 to 1100.0 hPa 10.0 to 1100.0 hPa
Wind Chill	°F	0.1	1.8 °F	Refer to stated ranges for wind speed and temp.	Perceived temperature resulting from combined effect of wind speed and temperature. Calculated based on 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.
Wind Chill	°C	0.1	1.0 °C	Refer to stated ranges for wind speed and temp.
Heat Index	°F	0.1	3.6 °F	Refer to stated ranges for temp. and relative humidity.	Perceived temperature resulting from the combined effect of temperature and relative humidity. Calculated based on NWS Heat Index (HI) tables. (Specification temperature limits established by HI tables.)
Heat Index	°C	0.1	2.0 °C	Refer to stated ranges for temp. and relative humidity.
Wet Bulb Temperature (Psychrometric)	°F	0.1	3.6 °F	Refer to stated ranges for temp., relative humidity and pressure.	Temperature indicated by a wet bulb psychrometer under forced aspiration. Calculated from temperature, relative humidity and pressure.
Wet Bulb Temperature (Psychrometric)	°C	0.1	2.0 °C
Dewpoint	°F	0.1	3.6 °F	Refer to stated ranges for temp. and relative humidity.	Temperature to which the air must be cooled at a constant pressure for water vapour to condense into water. Calculated from temperature and relative humidity.
Dewpoint	°C	0.1	2.0 °C	Refer to stated ranges for temp. and relative humidity.
Altitude	ft	1	typical 50 ft max 98 ft	-2,300 to 85,000 ft	Height above Mean Sea Level (“MSL”). Temperature compensated pressure (barometric) altimeter requires accurate reference barometric pressure to produce maximum absolute accuracy.
Altitude	m	1	typical 15 m max 30 m	-700 to 25,900 m
Max/Avg Wind	One-button clear and restart of Max Wind Gust and Average Wind measurement by powering down and restarting unit.
Display & Backlight	Reflective 5 digit LCD. Digit height 0.36 in / 9 mm. Choice of aviation green or visible red (NV models only) electroluminescent backlight. Manual activation with auto-off.
Response Time & Display Update	All measurements except those based on relative humidity respond accurately within 1 second. Relative humidity and all measurements which include RH in their calculation may require as long as 1 minute to fully equilibrate to a large change in the measurement environment. Display updates every 1 second.
Clock / Calendar	Real-time hours:minutes clock.
Operational & Storage Temperature Range	The operational temperature range of the liquid crystal display and batteries is 14° F to 131° F / -10 °C to 55 °C. Measurements beyond the operational range can be taken by briefly exposing unit to extreme conditions such that the display and batteries remain within the operational range. Storage range -22 °F to 140 °F / -30 °C to 60 °C.
Auto Shutdown	After 45 minutes of no key presses.
Certifications	CE certified, RoHS and WEEE compliant. Individually tested to NIST-traceable standards (written certificate of tests available at additional charge).
Battery	CR2032, one, included. Average life, 300 hours. Battery life reduced by backlight use in 2000 to 3500 models.
Environmental	Waterproof (IP67 and NEMA-6). MIL-STD-810F, Transit Shock, Method 516.5 Procedure IV; unit only; impact may damage replaceable impeller.
Size & Weight	4.8 x 1.9 x 1.1 in / 12.2 x 4.8 x 2.8 cm, 3.6 oz / 102 g (including slip-on cover).
Colour Options	Yellow \| Olive Drab (NV version)

The manufacturer reserves the right to amend the specification and therefore the information in this document may be subject to change.

Documentation

User Manual

Certificates of Conformity

Data Sheet

Kestrel 3500FW Fire Weather Meter

Name: Kestrel 3500FW Fire Weather Meter
Brand: www.paixalia.com
SKU: 9511443455
Price: 193.63 USD
Availability: InStock
Rating: 4.5769 (643 reviews)