Kestrel 3550FW Pocket Fire Weather Meter with Bluetooth

Kestrel 3550FW Pocket Fire Weather Meter with Bluetooth

0835FWLCORA

$229.00 USD
$229.00 USD
Shipping calculated at checkout.
7 in stock

Ships within 24 hours.
Quantities exceeding current stock typically ship in 2 business days.

Measures

  • Wind Speed
  • Average Wind Speed
  • Maximum Wind Gust
  • Current Wind Speed
  • Temperature
  • Barometric Pressure
  • Relative Humidity
  • Wind Chill
  • Heat Stress Index
  • Dew Point Temperature
  • Pressure Trend
  • Altitude (Barometric)
  • Wet Bulb Temperature (Psychrometric)
  • Wind Direction
  • Bluetooth

Dimensions

  • 5 x 1.8 x 1.1 in. / 127 x 45 x 28 mm
  • 2.3 Ounces / 65 Grams

Conforms with

CE, UKCA, ROHS, WEEE

What is included?

  • (1) CR2032 Lithium Battery
  • Instructions
  • Lanyard
  • Certificate Of Conformity (Spec Sheet)
  • Protective Cover - Hard Slip-on

Specifications

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:

Kestrel 3550FW Pocket Fire Weather Meter with Bluetooth

$229.00 USD

Our Kestrels include a Certificate of Conformity - Guaranteeing Accuracy!

Every Kestrel in our store is tested for accuracy!

We ship worldwide daily - Free in the USA!

Will my Kestrel purchase come with a warranty?

Absolutely! All of our Kestrel Meters & DROP's come with a full 5-year factory warranty. By purchasing from our store, your warranty will start from the time of your purchase, not from the manufacture date.

What happens if I don't like it?

Well, you would be one of very few that have told us that. As a matter of fact less than 0.002% of Kestrel Instruments are returned for any reason. That being said, we do offer a 60 day easy return period. To start a return, just login and start a return request. For US customers, we will send you a pre-paid return label. For our international customers, we will send you return instructions.

How fast is shipping? What if I have a large order?

In-stock items (in-stock quantities displayed above) ship within 24 hours. If you need more than what we have in stock, go ahead and order. Orders of (40) and less typically ship in 2 business days. Larger quantities typically ship within (1) week.

Are all of your items new?

Yes, everything we carry in our store is brand new with a full factory warranty. All of our Kestrel Instruments are guaranteed to be within specification and come with a certificate of conformity showing that your Kestrel was individually tested prior to being released for sale.

Do you ship to my country?

We ship worldwide with few exceptions. To see if we ship to your country, just add your item(s) to the cart. If your country is not listed in the selectable countries, unfortunately we do not ship to you.

Customer Reviews

Based on 4 reviews
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(4)
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P
PATRICK KIJEWSKI

Great !

H
Heidi A.

Love the Kestrel 3550FW Fire Weather Meter with Bluetooth. It arrived quickly. Thank you!

W
Wil K.

There was a mix up with the product from the manufacturer but when Extreme Meters became aware of the dilemma, they replied promptly and shipped me a replacement. I will be shipping back the Kestrel with the packaging mistake in a return envelope they provided. Very good customer service!

R
Ronald H.

If you’re a firefighter this is the model you want, has all the features that are needed to stay on top of current fire weather conditions

Reviews in Other Languages

Customer Testimonials

  • Greatest service ever!

    The equipment are in new and good condition. The shipping are really fast after making a payment, they send a package in next day. I am ordering product from Thailand. To be honest after comparing price, Extreme meter LLC is the best price in product and shipping fee.

    Lalitsinee Rtnpb.
    Technician

  • Urgent need for my K2 winter expedition.

    I needed urgent for my K2 winter expedition. I was on the last min and needed the goods to be sent in Iceland. Their chat online worked 100% and I was able to add on one extra peace even after I checkout. They send with UPS same day and I had the package 3 days later here in Iceland. Extreme Meters works and has good service I recommend them.

    John Snorri
    Adventurer

  • Couldn't be more pleased

    I ordered the Kestrel 3550FW meter. Received email notifications reporting the progression of my order up to delivery, which was much quicker than I'd expected. Couldn't be more pleased with the product and service.

    Heidi
    Wildland Firefighter

  • The service was prompt and cordial.

    The service was prompt and cordial. The Kestrel is used to measure wind velocity and temperature when applying pesticides for agriculture crop production. It is also used to measure weather conditions for livestock comfort.

    Arlyn Midtgaard
    Crop Management

  • Extreme Meters answered ALL my questions

    Extreme Meters answered ALL my questions, - were totally professional - were EXTREMELY respectful to me - were a REAL pleasure to chat with ALL BEFORE I PURCHASED THEIR PRODUCTS MOST SINCERE THANK YOU AND APPRECIATED

    Michael Larkins
    Weather Enthusiast

  • My order was in my mailbox before I knew it.

    The website was easy to navigate and placing an order was effortless. Shipping was extremely quick. My order was in my mailbox before I knew it. I started to use the meter immediately; it is excellent for my needs.

    Jane Doe
    Weather Enthusiast
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