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Kestrel 843B 4300B Pocket Construction Weather Tracker

Kestrel 843B 4300B Pocket Construction Weather Tracker
Kestrel 843B 4300B Pocket Construction Weather Tracker
Kestrel 843B 4300B Pocket Construction Weather Tracker
Kestrel 843B 4300B Pocket Construction Weather Tracker
Kestrel 843B 4300B Pocket Construction Weather Tracker
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Item #: NK-0843B
Measures Current wind speed, Average wind speed, and Maximum wind gust, Wind chill, Air temperature, Water temperature, and Snow temperature, Barometri... [Read More]
Our Price: $349.00
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Product Description
Measures Current wind speed, Average wind speed, and Maximum wind gust, Wind chill, Air temperature, Water temperature, and Snow temperature, Barometric pressure, Pressure trend, and Altitude (altimeter), Relative humidity, Heat stress index, Dewpoint, Wet bulb temperature, and Dry bulb temperature (psychrometer).

Each Kestrel instrument is individually calibrated, tested and certified against standards traceable to the National Institute of Standards and Testing (NIST).

Click here for detailed specifications...

The new Kestrel wind meters feature a new ergonomic design, built in backlight, data hold function, and a sure-grip hardcase.

Construction professionals have been using Kestrel Meters for years to monitor the weather on the job site. Knowing accurate local weather conditions is important for worker and equipment safety and for ensuring good results with processes like surface coating and concrete pouring. Now NK has partnered with industry experts to develop a customized Kestrel instrument for construction professionals who place concrete.

The new Kestrel 4300 Construction Weather Tracker, NK's latest specialty Kestrel meter, measures and displays evaporation rate, which is a function of relative humidity, temperature and wind speed. Evaporation rate is a critical environmental indicator that concrete contractors use to ensure they avoid plastic shrinkage cracking of expensive concrete installations. Plastic shrinkage cracking occurs when the surface of the concrete dries too quickly and shrinks before the bed has cured enough to resist cracking.

We are a full service Factory Authorized Kestrel Instruments dealer. We offer a no questions asked special 90 day money back guarantee for all Kestrel Instruments products. Our competition and the manufacturer only offer 30 days. We are experts and install every weather station we sell. You will find our discounts the lowest in the industry.



Generally leaves the warehouse in 1-3 business days.

Features
Current, average, and maximum air velocity in ft/m, mph, m/s, km/h, kts, Beaufort
Volume air flow in cfm, L/s, m/s, m/m, m/h
Humidity Ratio (grains) in gpp, g/kg
Air flow in cfm, L/s, m/s, m/m, m/h
Air Velocity in ft/m, mph, m/s, km/h, kts, Beaufort
Temperature in F or C
Relative humidity in %
Graph and recall trends
Easy to read, backlight display
Time and date
Customize screens to display user-selected measurements
Flip-top impeller cover allows use of other functions while protecting the impeller (hard cases available.)
Automatically store measurements, even when the unit is turned off
Manually store measurements with the press of a button
Chart up to 2000 measurements
Impeller can be replaced without tools
Exterior temperature, humidity, and pressure sensors for fast and accurate readings
Humidity sensor can be recalibrated in the field with our Relative Humidity Calibration Kit.
Includes neck and wrist lanyard, protective pouch and 2 AAA batteries
Waterproof
Standard 5-year warranty covers parts and labor
Assembled in the USA

Specifications:
Display
Update 1 second
Temperature Range Normal operation from -20C to 60C [-4F to 140F]. Below -20C [-4F], accurate readings may be taken by keeping the unit warmer than -20C [-4F] and exposing it for the minimum time necessary to take a reading (less than 1 minute).
Storage Temperature -30C to 60C [-22F to 140F].
Auto Shutdown After 15 minutes of no button presses. (This feature can be disabled.)
Physical
Battery: Two AAA alkaline batteries(included).Typical life, 400 hours
Impeller 1in diameter, sapphire bearings, light weight
User-replaceable impeller/housing assembly
Temperature Sensor Hermetically sealed precision thermistor
Humidity Sensor: Solid state silicon capacitive sensor
Pressure Sensor: Monolithic silicon piezoresistive sensor
Dimensions: 5 x 1.8 x 1.1 in
Weight: 3.6 oz

Kestrel 4300 Measures:
Evaporation rate
Relative humidity
Current, maximum and average Wind Speed
Temperature
Dewpoint
Barometric pressure
Heat stress index
Wet bulb temperature
Wind chill
Altitude
Density altitude

Specifications:
Display
Update 1 second
Temperature Range Normal operation from -20C to 60C [-4F to 140F]. Below -20C [-4F], accurate readings may be taken by keeping the unit warmer than -20C [-4F] and exposing it for the minimum time necessary to take a reading (less than 1 minute).
Storage Temperature -30C to 60C [-22F to 140F].
Auto Shutdown After 15 minutes of no button presses. (This feature can be disabled.)
Physical
Battery: Two AAA alkaline batteries(included).Typical life, 400 hours
Impeller 1in diameter, sapphire bearings, light weight
User-replaceable impeller/housing assembly
Temperature Sensor Hermetically sealed precision thermistor
Humidity Sensor: Solid state silicon capacitive sensor
Pressure Sensor: Monolithic silicon piezoresistive sensor
Dimensions: 5 x 1.8 x 1.1 in
Weight: 3.6 oz

Kestrel Bluetooth Features: Kestrel Pocket Weather Meters have specifically customized our Bluetooth integration to answer the unique needs of our customers:
Streamline your work and reduce your equipment in the field - wireless data transmission eliminates the need for a separate interface and cabling.
Every Bluetooth Kestrel will include custom communication software designed to quickly and easily configure your data transmission frequency, download logged data, graph data, and transfer data to other applications.
Data transmission range adjustment allows you to maximize power to communicate with your Kestrel at up to a 30 feet range, or reduce power for closer, more secure operation.
Individual unit IDs ensure you pair with the Kestrel you want, even when more than one system is operating in the same area.
Permanently coded unique 4-digit Pin numbers provide extra security when pairing and transmitting data
Previously, construction foremen have employed a Kestrel Meter to measure the relevant conditions, then referenced an American Concrete Institute chart to calculate the evaporation rate. The new Kestrel 4300 Construction Weather Tracker does the work for them! The user simply enters the concrete temperature (obtained via an IR or probe thermometer) and the 4300 calculates the evaporation rate instantly. In addition to evaporation rate, the Kestrel 4300 remains the perfect rugged all-purpose construction weather tool, measuring and logging the following relevant weather conditions right where the workers and equipment are operating. Many construction applications require documentation of conditions which is made quick and easy with the Kestrel Interface and accompanying software. Take advantage of the 4300's 1800 data-point log and document that the work was done during the appropriate conditions, then use the Kestrel Interface to upload stored data to a PC for long-term storage, in-depth analysis and detailed charting. For maximum accuracy when measuring the evaporation rate, measure the concrete temperature via IR or a probe thermometer, enter the concrete temperature into the Kestrel, and position the unit facing into the wind, 20 inches above the concrete. Shade the Kestrel's thermistor (temperature sensor) so it is not in direct sunlight. For the best accuracy, use the Kestrel's convenient averaging mode to average the evaporation rate over the recommended 6-10 seconds. Kestrel's Mini Tripod is a great companion for the 4300it measures 15 inches tall, positioning the Kestrel 4300 20 inches above the concrete. Every Kestrel is individually calibrated to NIST-traceable standards and comes with a free Certificate of Conformity. Individual NIST certificates and recalibration are also available.


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