Kestrel 4300 843 Pocket Construction Weather Tracker

Item #: NK-0843

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: $259.00

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).

Generally leaves the warehouse in 1-3 business days.

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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.

Features
	Waterproof and floats

	Backlight for low light conditions

	Data logger (automatic and manual)

	Customizable data storage – 1800 data points

	Multi-Function 3-line display

	Convenient averaging mode

	Data charting

	Humidity sensor can be recalibrated in the field with our Relative Humidity Calibration Kit.

	User-replaceable impeller

	Flip-top impeller cover

	Upload to a computer (with optional interface)

	Five languages (English, French, Spanish, German, and Italian)

	US Patent Nos. 5,783,753 and 5,939,645 and 6,257,074

	5-year warranty

	Assembled in the USA 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 Kestrel 4300 Includes

	Soft carry pouch

	Wrist and neck lanyard

	Batteries – 2 AAA

	Kestrel Certificate of Conformity (inset image at the top of the page)

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 4300—it 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.

Manual Available online