Kestrel DROP D2AG Livestock Heat Stress Monitor

Stay informed of heat conditions in the barn or during transport.

$132.00
Kestrel  |  SKU: 0720AGHVG  |  Barcode: 730650003198

Measures

  • Temperature
  • Relative Humidity
  • Heat Stress Index
  • Dew Point Temperature
  • Temperature-Humidity Index (THI)

Includes

  • (1) CR2032 Lithium Battery
  • Instructions
  • Certificate Of Conformity (Spec Sheet)

Warranty

5 year manufacturers warranty.

US Manufacturing

The entire Kestrel line is designed and built in the USA. No other handheld weather meter is. Some electronic components have to be sourced overseas these days, but Kestrel buys American wherever possible. Kestrel believes US manufacturing is the only way to ensure that every Kestrel will do its job right. Kestrel believes it’s important to do its part to keep manufacturing alive and well in the US.

State Sales Tax Information

State sales tax not charged / collected on orders outside of Pennsylvania

Government / Education Pricing Available

Sensor Specifications

Kestrel D1 - D3 Sensor Specifications

SENSORS

SENSORS ACCURACY (+/-) RESOLUTION SPECIFICATION RANGE NOTES
AmbientTemperature 0.9 °F
0.5 °C
0.1 °F 0.1 °C 14 to 131°F
-10 to 55 °C
Airflow of 2.2 mph|1 m/s or greater provides fastest response and reduction of insolation effect. For greatest accuracy, avoid direct sunlight on the temperature sensor and prolonged sunlight exposure to the unit in low airflow conditions. Calibration drift is negligible for the life of the product. For further details, see Battery Operational Temperature Limits.
Relative Humidity 2%RH 0.1 %RH 10 to 90% 25°C noncondensing 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.
Pressure 1.5 hPa|mbar
0.044 inHg
0.022 PSI
0.1 hPa|mbar
0.01 inHg
0.01 PSI
25°C/77°F
700-1100 hPa|mbar
20.67-32.48 inHg
10.15-15.95 PSI
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.

CALCULATED MEASUREMENTS
MEASUREMENT ACCURACY (+/-) RESOLUTION SENSORS EMPLOYED
Density Altitude 226 ft
69 m
1 ft 1 m Temperature, Relative Humidity Pressure
Dew Point 3.4 °F
1.9 °C
15-
95% RH. Refer to Range for Temperature Sensor
0.1 °F
0.1 °C
Temperature, Relative Humidity
Heat Index 7.1°F
4.0°C
0.1 °F
0.1 °C
Temperature, Relative Humidity
THI (NRC) 1.5 °F
0.8 °C
0.1 °F
0.1 °C
Temperature, Relative Humidity
THI (Yousef) 2.3 °F
1.3 °C
0.1 °F
0.1 °C
Temperature, Relative Humidity
Wet Bulb Temperature - Psychrometric 3.2 °F
1.8 °C
0.1 °F
0.1 °C
Temperature, Relative Humidity Pressure
ADDITIONAL PRODUCT INFO
Response Time & Display Update Display updates every 1 second. After exposure to large environmental changes, all sensors require an equilibration period to reach stated accuracy. Measurements employing RH may require longer periods particularly after prolonged exposure to very high or very low humidity. WBGT requires about 8 minutes to reach 95% accuracy and about 15 minutes to reach 99% accuracy after exposure to large environmental changes.
Data Storage Logged history stored for every measured value. Auto-store interval settable from 2 seconds to 12 hours*, overwrite on or off. D1: >13,000 data points, D2: >7,000 data points, D3: >6,000 data points.
Bluetooth® Data Connect Option Wireless range up to 100ft|30m. Compatible with Kestrel LiNK app for iOS (model 4s and later) and select Android products (Android 4.3 and higher) (See website for complete list of compatible 3rd party apps).
Certifications CE certified, RoHS, FCC, IC tested and WEEE compliant. Individually tested to NIST-traceable standards.
Origin Designed and manufactured in the USA from US and imported components. Complies with Regional Value Content and Tariff Code Transformation requirements for NAFTA Preference Criterion B.
Battery User-replaceable CR2032 (included).
Shock Resistance MIL-STD-810g, Transit Shock, Method 516.6 Procedure IV; unit only; impact may damage replaceable impeller.
Sealing Waterproof (IP67 and NEMA-6)
Battery Operational Temperature Limits 0° F to 140 ° F | -18 °C to 60°C Measurements may be taken beyond the limits of the operational temperature range of batteries by maintaining the unit within the operational range and then exposing it to the more extreme environment for the minimum time necessary to take reading.
Storage Temperature -22.0 °F to 140.0 °F | -30.0 °C to 60.0 °C.
Size & Weight 2.4 x 1.8 x 0.9 in | 6 x 4.5 x 2.3 cm 1.2oz | 34g (Lithium battery included)

Description

Heat stress in livestock can lead to serious animal health issues, decreased milk production, and compromised herd performance.

Stay informed of heat conditions in the barn or during transport with the Kestrel D2 Livestock Heat Stress Monitor. Multiple built-in environmental measurements mean your DROP D2 can also be used for many other agricultural applications including hay and feed storage areas and greenhouses.

The Kestrel Drop D2 Livestock Heat Stress Monitor is a very affordable rugged heat stress monitor that can be used in the barn, during transport, or anywhere livestock are housed. Simply hang in place wherever insight into conditions is needed, and access current conditions and historical readings with your iOS or Android device. Designed by Kestrel with input from some of the world's most respected experts in livestock heat stress, the Kestrel DROP D2 Livestock Heat Stress Monitor is designed to help you MEASURE and MANAGE your animals’ heat stress, ensuring you MAXIMIZE your bottom line.

  • Direct readout of Temperature Humidity Index (THI) – a dairy cattle specific measurement that provides guidance for when heat stress will start to reduce milk production.  
  • Also measures heat stress index, temperature, humidity and dew point for application to many types of livestock and agricultural applications.
  • The EASIEST and most accurate way to monitor and track environmental measurements critical to agriculture in almost any farm, home or transport location – wet or dry, indoors or out.
  • Easily hangs inside a barn, transport vehicle or wherever livestock are housed.
  • Horse shippers - monitor trailer temperatures and heat index from inside your truck! Know when to find shade or take a break to water your horses.
  • View data wirelessly with Kestrel LiNK app, powered by Bluetooth® low energy, on mobile devices and computers when within 100’ of device. See, save and share data from multiple DROPs with just one phone or tablet.
  • Store thousands of data points and get months of logging on a single coin-cell battery - customize logging rate, connections and alerts
  • Android 4.3 and higher. Works with most Android devices with Bluetooth® low energy, including Samsung Galaxy, Nexus 4, Motorola, Android and other recent generation phones and tablets.
  •  iOS 6 installed iPhone 4s, iPad 3rd generation or later.
  • Rugged (drop tested to MIL-STD-810G standards), dust and waterproof (sealed to IP67 standards).
  • 5-year warranty.
Use a DROP Anywhere livestock are housed- Small, Accurate, Rugged and Waterproof
Each DROP measures just 1 x 1.8 x 2.4 inches (24 x 46 mm x 60 mm) and weighs just 1.2 ounces (34 grams).  DROP loggers meet military and international standards for water, dust and shock resistance (IP-67 and MIL-STD-810G) and are conveniently equipped with a sturdy d-ring for hanging wherever needed.
DROP D1-D3 Data Points:

DROP D1:  Data Points: 13064

  • Logging every 2 seconds - Fills up after 7.5 hours
  • Logging every 10 minutes - Fills up after 90.7 days
  • Logging every 2 hours - Fills up after 544 days

DROP D2:  Data Points: 8165

  • Logging every 2 seconds - Fills up after 4.5 hours
  • Logging every 10 minutes - Fills up after 56.7 days
  • Logging every 2 hours - Fills up after 340 days. 

DROP D3:  Data Points: 6220

  • Logging every 2 seconds: Fills up after 3.4 hours
  • Logging every 10 minutes - Fills up after 43.2 days
  • Logging every 2 hours -  Fills up after 259 days
Battery Life:
  • The battery life will vary based on usage.
  • For baseline conditions and settings*, the battery will last approximately 6 months. *Temp = 75°F, Logging Rate = 10 Minutes, Update Rate = 30 seconds.
  • Battery life will be reduced by:
    • Colder conditions
    • More frequent logging or update rates
  • Downloads of large data logs (or firmware updates) are best completed with a fresh battery and in temperatures above 10°C / 50°F.
Requirements:
  • iOS 6 installed iPhone 4s, iPad 3rd generation, iPod Touch 5th generation and above.
  • Android 4.2 and higher. Works with most Android devices with Bluetooth® low energy, including Samsung Galaxy, Nexus 4, Motorola Droid, and other recent generation phones and tablets.
Who's using DROP's?
  • Poultry Producers
  • Swine Producers
  • Sheep Producers
  • Goat Producers
  • Beef Operations
  • Dairy Producers
  • Processors
  • Veterinarians
  • Livestock Nutritionists
  • Transportation Providers
  • Researchers
Features:
  • Bluetooth Smart (Wireless Technology)
  • Data Logger
  • Drop-Tested, MIL-STD-810G
  • IP67 Waterproof
  • Lightweight & Durable
  • User-Replaceable CR2032 Battery
MEASUREMENTS DROP D2AG 5000AG 5500AG 5400AG
 Temperature yes yes yes yes
 Relative Humidity yes yes yes yes
 Heat Stress Index yes yes yes yes
 Temperature-Humidity Index (THI) yes yes yes yes
 Dew Point Temp. yes yes yes yes
 Wind Speed/Air Speed   yes yes yes
 Wind Chill   yes yes yes
 Wet Bulb Temp. (Psychrometric)   yes yes yes
 Station Pressure (Absolute Pressure)   yes yes yes
 Barometric Pressure   yes yes yes
 Altitude   yes yes yes
 Density Altitude   yes yes yes
 Volume Air Flow   yes yes  
 Wind Direction     yes yes
 Crosswind / Headwind / Tailwind     yes yes
 Delta T     yes yes
 Globe Temp.       yes
 Naturally Aspirated Wet Bulb Temp.       yes
 Wet Bulb Globe Temp. (WBGT)       yes
 Heat Load Index (HLI)       yes
 Accumulated Heat Load Units (AHLU)       yes

Payment & Security

Payment methods

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Kestrel Instruments

Quality designed and durably built in the U.S.A. Every Kestrel found in our store is tested for accuracy, includes a full 5 year global factory warranty and comes with a certificate of conformity.