By Kestrel

Kestrel 3500FW Pocket Fire Weather Meter

Measure weather conditions quickly with the firefighters trusted tool.

Regular price ₴8,390.00 UAH
Regular price Sale price ₴8,390.00 UAH
Shipping calculated at checkout.
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Availability: In stock
SKU: 0835FWORA
Measures:
Wind Speed, Current Wind Speed, Average Wind Speed, Maximum Wind Gust, Temperature, Barometric Pressure, Relative Humidity, Pressure Trend, Wind Chill, Heat Stress Index, Dew Point Temperature, Altitude (Barometric), and Wet Bulb Temperature (Psychrometric)
Shipping:
Free Shipping in the USA
Global Shipping:
Discounted Global Shipping
Shipping Notice:
Ships in 1 business day
Warranty:
5 year manufacturers warranty.
Complies with:
CE, UKCA, ROHS, WEEE
Size:
5 x 1.8 x 1.1 in. / 127 x 45 x 28 mm
Weight:
2.3 Ounces / 65 Grams
Regular price ₴8,390.00 UAH
Regular price Sale price ₴8,390.00 UAH

Kestrel 3500FW Fire Weather Meter – USA-Made, Comprehensive Fire Weather Data Including Wind Speed, Temperature, Humidity, Pressure, and More – Waterproof, Floats, Includes PIG Reference Card, Ideal for Firefighting and Wildfire Management

The Kestrel 3500FW Fire Weather Meter is a professional-grade tool designed specifically for firefighting and wildfire management. Designed and built in the USA, this compact yet powerful weather meter provides critical fire weather data to ensure safe and effective operations in the field. It accurately measures wind speed (including current wind speed, average wind speed, and maximum wind gust), temperature, barometric pressure, relative humidity, pressure trend, wind chill, heat stress index, dew point temperature, altitude (barometric), and wet bulb temperature (psychrometric). With this essential data, the Kestrel 3500FW allows professionals to make informed decisions and stay safe when assessing fire behavior and environmental conditions.

Key Features:

  • Comprehensive Fire Weather Data: The Kestrel 3500FW provides an extensive set of measurements, including wind speed, current wind speed, average wind speed, maximum wind gust, temperature, barometric pressure, relative humidity, pressure trend, wind chill, heat stress index, dew point temperature, altitude (barometric), and wet bulb temperature (psychrometric), offering all the essential metrics for assessing fire weather conditions.

  • Waterproof & Floats: Fully waterproof and built to float, the Kestrel 3500FW is designed to withstand rugged outdoor conditions and will stay with you even in wet environments. Whether you're working in rain, high humidity, or near water, this durable weather meter will provide consistent and reliable readings.
  • PIG (Probability of Ignition) Reference Card Included: The Kestrel 3500FW includes a Waterproof Probability of Ignition (PIG) Reference Card, a valuable tool for understanding fire behavior and predicting the likelihood of ignition based on environmental conditions. This feature is essential for wildfire management and firefighting professionals working to assess fire danger and plan responses.
  • Designed & Built in the USA: Proudly manufactured in the USA, the Kestrel 3500FW is crafted for precision, durability, and reliability, providing the high-quality performance you expect from a leading weather instrument.
  • Wind Chill & Heat Stress Index: The meter measures both wind chill and heat stress index, critical for assessing the combined effects of wind and temperature on human safety, particularly for those working in extreme outdoor conditions.
  • Compact & Easy-to-Use: With its three-button operation, the Kestrel 3500FW is intuitive and easy to use in the field, allowing quick navigation through various functions for real-time decision-making.
  • 5-Year Manufacturer’s Warranty: The Kestrel 3500FW is backed by a 5-year manufacturer’s warranty, offering long-term durability and protection against defects.
  • Portable & Rugged: This meter is designed to be compact, lightweight, and portable, making it easy to carry in your pocket or gear bag while withstanding tough conditions in the field.
  • Reliable & Durable: Built to withstand the harshest conditions, the Kestrel 3500FW is engineered to endure the rigors of wildfire response and outdoor environments, delivering consistent, accurate readings when you need them most.
  • Certificate of Conformity: Each Kestrel 3500 includes a certificate of conformity, confirming that it meets high standards of quality and provides precise, accurate measurements.
  • Data Hold Mode: The Hold Mode is helpful for capturing measurements when you're unable to view the display in real-time.
  • High-contrast monochrome LCD display: Easily readable in direct sunlight.
  • User-Replaceable Impeller: Every Kestrel Impeller is tested at high and low speeds. The impeller is easily replaced if needed.
  • Slip-On Protective Cover: Keep your Kestrel protected when not in use with a hard cover that simply slides up the lanyard and over the Kestrel.

Why the Kestrel 3500FW is the Ideal Fire Weather Meter:

For firefighting professionals and wildfire management teams, the Kestrel 3500FW is a critical tool that provides real-time, actionable data for understanding fire weather conditions. With precise measurements of wind speed, temperature, humidity, pressure, wind chill, heat stress, and dew point, along with the included Probability of Ignition (PIG) Reference Card, the Kestrel 3500FW allows you to assess fire danger and optimize response strategies. Its waterproof design and floating capabilities make it durable and reliable in challenging environments, ensuring that you have the right information when you need it most. 

Why Purchase the Kestrel 3500FW at Extreme Meters?

  • USA-Made Excellence: The Kestrel 3500FW is designed and built in the USA, ensuring it meets the highest standards of quality and reliability for fire weather measurement.
  • Expert Support: At Extreme Meters, we are committed to helping you select the best Kestrel fire weather meter for your needs and providing expert advice and support to ensure you get the most out of your investment.
  • Competitive Pricing & Fast Shipping: We offer competitive pricing on the Kestrel 3500FW and provide fast, secure shipping to ensure you receive your product promptly and ready to use. Every order shipped from Extreme Meters includes insurance for loss or damage during transit.
  • Family Owned and Operated Store (We care):As a family-owned store, every customer is important to us. Every order is handled from order entry to shipping by someone who has a vested interest in our customers happiness.
  • 5-Year Warranty & PIG Reference Card: With a 5-year manufacturer’s warranty and the inclusion of the Waterproof Probability of Ignition (PIG) Reference Card, you can rely on the Kestrel 3500FW to help you make informed, data-driven decisions for safe wildfire management.
Measurement
  • Wind Speed
  • Current Wind Speed
  • Average Wind Speed
  • Maximum Wind Gust
  • Temperature
  • Barometric Pressure
  • Relative Humidity
  • Pressure Trend
  • Wind Chill
  • Heat Stress Index
  • Dew Point Temperature
  • Altitude (Barometric)
  • Wet Bulb Temperature (Psychrometric)
  • (1) CR2032 Lithium Battery
  • Instructions
  • Lanyard
  • Certificate Of Conformity (Spec Sheet)
  • Protective Cover - Hard Slip-on

Sensor Specifications

Wind Speed

Units of Measure: mph | kt | B | m/s | ft/min / km/h 
Specification Range:
  • 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 F/S*
Operational Range:
  • 0.6 to 60.0 m/s
  • 118 to 11,811 ft/min
  • 2.2 to 216.0 km/h
  • 1.3 to 134.2 mph
  • 1.2 to 116.6 knots
  • 0 to 12 B*
  • 2-196.9 F/S*
Resolution:
  • 0.1 m/s
  • 1 ft/min
  • 0.1 km/h
  • 0.1 mph
  • 0.1 knots
  • 1 B
Accuracy (+/-): Larger of 3% of reading, least significant digit or 20 ft/min
Notes: 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 (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. *F/S only in Ballistics units. Beaufort not available in Ballistics units.

Ambient Temperature

Units of Measure: Fahrenheit, Celsius
Specification Range:
  • -20.0 to 158.0 °F
  • -29.0 to 70.0 °C
Operational Range:
  • 14.0.0 to 131.0 °F
  • -10.0 to 55.0 °C
Resolution:
  • 0.1 °F
  • 0.1 °C
Accuracy (+/-):
  • 0.9 °F
  • 0.5 °C
Notes: 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 insolation effect. Calibration drift negligible. Thermistor may also be used to measure temperature of water or snow by submerging thermistor portion into material -- remove impeller prior to taking submerged measurements and ensure humidity sensor membrane is free of liquid water prior to taking humidity-based measurements after submersion.

Pressure

Units of Measure: inHg, hPA, mb
Specification Range:
  • 25°C/ 77°F
  • 750-1100 hPa|mbar
  • 22.15-32.48 inHg
  • 10.88-15.95 PS
Operational Range:
  • 0.30 to 48.87 inHg
  • 10.0 to 1654.7 hPa|mbar
  • 0.14 to 24.00 PSI
  • 14.0 to 131.0 °F -10.0 to 55.0 °C
Resolution:
  • 0.1 hPa|mbar
  • 0.01 inHg
  • 0.01 PSI
Accuracy (+/-):
  • 1.5 hPa|mbar
  • 0.044 inHg
  • 0.022 PSI
Notes: Monolithic silicon piezo-resistive pressure sensor with second-order temperature correction. Between 1100–1600 mbar, unit will operate with reduced accuracy. Sensor may not operate above 1600 mbar and can be damaged above 6,000 mbar or below 10 mbar. Calibration drift is negligible for the life of the product.

Relative Humidity

Units of Measure: %
Specification Range: 5 to 95% 25°C non-condensing
Operational Range: 0 to 100% 
Resolution: 0.1 %RH
Accuracy (+/-): 3%RH
Notes: 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.

Calculated Measurements

Wind Chill

Accuracy (+/-):
  • 1.6 °F
  • 0.9 °C
Resolution:
  • 0.1 °F
  • 0.1 °C
Sensors employed:
  • Wind Speed
  • Temperature

Barometric Pressure

Accuracy (+/-):
  • 0.07 inHg
  • 2.4 hPa|mbar
  • 0.03 PSI
Resolution:
  • 0.01 inHg
  • 0.1 hPa|mbar
  • 0.01 PSI
Sensors employed:
  • Pressure
  • User Input (Reference Altitude)

Altitude

Accuracy (+/-):
  • typical: 23.6 ft/7.2 m
  • from 750 to 1100 mBar
  • max: 48.2 ft/14.7 m
  • from 300 to 750 mBar
Resolution:
  • 1ft
  • 1m
Sensors employed:
  • Pressure
  • User Input (Reference Pressure)

Dew Point

Accuracy (+/-):
  • 3.4 °F
  • 1.9 °C
  • 15-95% RH.
  • Refer to Range
    for Temperature Sensor
Resolution:
  • 0.1 °F
  • 0.1 °C
Sensors employed:
  • Temperature
  • Relative Humidity

Wet Bulb Temperature - Psychrometric

Accuracy (+/-):
  • 3.2 °F
  • 1.8 °C
Resolution:
  • 0.1 °F
  • 0.1 °C
Sensors employed:
  • Wind Speed
  • Temperature

Heat Index

Accuracy (+/-):
  • 7.1°F
  • 4.0°C
Resolution:
  • 0.1 °F
  • 0.1 °C
Sensors employed:
  • Temperature
  • Relative Humidity

Downloads:

Customer Reviews

Based on 4 reviews
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T
Terry E.

Had this device about a week and just getting the hang of it. Can't wait to use it in Alaska next month.

A
Anonymous

A little Peace of mind for mom
My son is stationed in CA Desert. I wanted him to have a dependable lightweight piece of equipment that did not need blue tooth to work on his adventures and this has so far been very relialable and provided good information for hikes and exploring in extreme heat. I feel better knowing he has this light weight meter with him.

C
Candace C.

Perfect!

T
Ted H.

I haven't used it yet but I'm real glad to have it. Certain it will be a big help.