Relative humidity, wind speed and wind direction are all critical measurements for ensuring safety and effectiveness when spraying. Many locales have regulations specifying maximum permitted wind speed when spraying to minimize spray drift.

Every single Kestrel model offers fast and certified-accurate wind speed measurements in a unit that fits conveniently into your pocket, making it easy to be in full regulatory compliance. In hot, dry conditions, evaporation can send your expensive chemicals uselessly into the air rather than onto your crops. In these conditions, selecting an appropriate nozzle and increasing the spray droplet size can minimize costly evaporation. Kestrel models are available to measure dry bulb temperature, wet bulb temperature, Delta T, relative humidity and dew point temperature. Every Kestrel humidity measurement uses our patented fast-acting humidity sensor with accuracy guaranteed through a two-point calibration. Wet bulb temperature is pressure-corrected to ensure accuracy even at high altitudes and low humidity.

If your application requires documentation of the weather conditions, use the Kestrel 4000's 2000-point memory to conveniently store all environmental information with the single press of a button, and later upload your stored data to a computer to create a log of spraying conditions (requires optional interface).

Kestrel 3500 Delta T

Proper ventilation and temperature and humidity control of livestock facilities can reduce disease and prevent stock loss, as well as improve your rate of gain and feed-conversion efficiency.

A Kestrel 3000 Pocket Weather Meter lets you measure the conditions that matter most - air velocity, temperature, and relative humidity — right where your stock are experiencing them.  The Kestrel 4100 even includes a built-in volume airflow ("CFM") calculator so you can monitor the performance of your ventilation equipment. Add a sturdy belt carry case to ensure your have your Kestrel with you to spot check conditions at any time, helping you ensure your stock's safety and health.

Inefficient irrigation systems are costly: they waste water, wash off fertilizers and lawn chemicals, and degrade sidewalks and roads prematurely. When conducting audits of an irrigation system's efficiency, it is critical that the Irrigation Technician monitor wind speed and direction, temperature and relative humidity during all phases of the audit.

There's no easier way to do this than with a Kestrel Pocket Weather Meter. The ultimate tool for this job is the new Kestrel 4500 together with a tripod and Kestrel Vane Mount.  The data log is ideal for use in the field, and the computer interface makes log entries and report development a snap back in the office.

Vineyard managers can monitor the weather right at the individual vine with a Kestrel Pocket Weather Meter. Wind speed, air temperature, relative humidity and dew point are all important measurements in the vineyard. In the spring and fall, knowing the temperature trends and dew point is critical to determining the need for frost protection. If the air is dry (low dew point) heat loss will be greater than when the air is moist, and the threat of a radiation freeze goes up. Dew point and temperature also affect leaf wetness, which influences the development of downy mildew. The Kestrel's wind speed readings ensure that spraying is done safely and effectively during appropriate environmental conditions.

A Kestrel Pocket Weather Meter is also a valuable tool when planning your vineyard. Tracking conditions at potential vine locations can help you develop an accurate understanding of your property's microclimates and select the varietals and growing sites that will ensure success. 

Heat stress can cause reduced productivity and even death in livestock. The effects of severe heat stress are often seen in the form of reduced reproductive performance, reduced daily weight gain and reduced milk production. By using a Kestrel to monitor temperature and humidity, and referring to the heat index appropriate for your livestock (indices exist for cattle, swine, turkeys and laying hens), a farmer can take necessary cooling measures in time. Cooling measures include increasing ventilation, making plenty of drinking water available, misting the animals, avoiding transport and movement, and withdrawing feed. Wind chill is equally important in the winter. A cow's energy requirements are estimated to increase 1% for each degree the wind chill is below 32°F, and the effect is even more severe for a wet cow. These increased energy requirements have to be made up in additional feed or the animals will fail to thrive.

Every Kestrel model from the 2000 on up includes wind chill measurement, letting you know when it is critical to provide additional feed energy and/or wind protection.