Kestrel 4300 Construction Weather Tracker

Kestrel 4300 measures
evaporation rate
relative humidity in %
wind speed (current, average, and maximum)
temperature in °f or °c
dewpoint
barometric pressure
heat stress index
wet bulb temperature
windchill
altitude
density altitude
calculates evaporation rate
the new kestrel 4300 construction weather tracker measures and displays evaporation rate — 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 cracks in concrete installations especially concrete flatwork. Plastic shrinkage cracks occur when the surface of the concrete dries too quickly and shrinks before the bed has cured enough to resist cracking. This is especially relevant in specialty applications like decorative concrete, ready mix concrete (rcm) and tilt-up concrete.
Helps prevent plastic shrinkage cracks
plastic shrinkage cracks can be prevented by properly assessing the weather and the fresh concrete conditions. Previously, construction contractors used 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 infrared thermometer 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.