Kestrel 5400 WBGT Heat Stress Tracker (HST) & Weather Meter

$529.00

The Kestrel 5400 Heat Stress Tracker is the most user-friendly WBGT meter on the market. Detect unsafe heat-related conditions.

Availability: In stock
SKU
0854




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  • Measures Wet Bulb Globe Temperature (WBGT), Thermal Work Limit (TWL), heat index, temperature, humidity and much more. 15 measurements in all!
  • Waterless! Natural Wet Bulb Temperature accurately calculated from on-board digital sensors with no tedious setup or maintenance.
  • Large, hi-res, hi-contrast, graphic display is perfectly readable in the brightest sunlight and is backlit for use in low-light conditions.
  • Handheld, portable, data logger with customizable warning flag settings, graphing and measurement statistics.

Kestrel 5400 WBGT Heat Stress Tracker (HST) & Weather Meter Overview


Environmental Measures
Altitude (Barometric)
Barometric Pressure
Compass Direction**
Crosswind**
Density Altitude
Dew Point Temperature
Globe Temperature
Headwind/Tailwind**
Heat Stress Index
Naturally Aspirated Wet Bulb Temperature
Relative Humidity
Station Pressure (Absolute Pressure)
Temperature
Thermal Work Limit (TWL)
Wet Bulb Globe Temperature (WBGT)
Wet Bulb Temperature (Psychrometric)
Wind Chill
Wind Direction**
Wind Speed/Air Speed
** Available with Pro version with Compass and Link + Vane Mount
Tips For Taking Accurate Measurements

The next generation of WBGT and environment monitoring is here with the Kestrel 5400 Heat Stress Tracker

The Kestrel 5400 is a trusted and accurate handheld, portable, WBGT (Wet Bulb Globe Temperature) measurement tool and environmental data logger.  No need for distilled water, bulky globes, complicated setup or expensive equipment.  Getting accurate measurements couldn’t be easier: just hold the Kestrel Heat Stress Tracker in the area of interest for both instantaneous and average WBGT measurements.  Set the appropriate WBGT thresholds for flag warnings and the loud buzzer, bright LED beacon and on-screen warnings provide instant notification of dangerous conditions. The Kestrel 5400 even comes preprogrammed with several athletics, industrial, and military guidelines to further ease the set-up process.

"In most situations environmental heat expo­sures should be assessed by the Wet Bulb Globe Thermometer (WBGT) method."
-- NIOSH Recommended Standard Publication
Occupational Exposure to Heat & Hot Environments
Department of Health & Human Services, CDC

Unlike other WBGT meters on the market, the Kestrel 5400 is a full-featured weather meter as well.  Measure wind speed, maximum wind gusts, temperature, humidity, pressure, wind chill, density altitude and more. No matter what your activity, the Kestrel 5400 provides insight into the critical conditions affecting safety, performance and success. The Kestrel 5400 with LiNK wireless data communication adds a compass for tracking wind direction as well, expanding its usability to include HAZMAT response, and even measuring headwind at the running track!

The Kestrel 5 Series platform offers a large, high-resolution and contrast display with ease of font readability. It also includes a built-in dual color backlight, extra-strong polycarbonate lens, AA battery operation and optional LiNK iOS and Android wireless connectivity and app support.  Like all Kestrel meters, the Kestrel 5400 is drop-proof, dust-proof, waterproof and able to withstand harsh environments without damage – so it can be used anywhere needed to keep athletes, workers, military personnel and animals safe from heat injury. A range of carry pouch options makes it even easier to take your Kestrel meter with you.

Pair the Kestrel 5400 with the optional Kestrel Vane Mount for hands-free measurements over the course of the practice, training session or workday.  And for maximum functionality, choose the Kestrel 5400 with LiNK to transmit live measurements to your phone or tablet when you’re within range.   Learn more about Kestrel LiNK.

In addition to measuring the current environmental conditions, the Kestrel 5400 tracks and logs over 10,000 sets of time-stamped data. Your data log can be transferred to a iOS/Android device wirelessly with the LiNK wireless communication option and Kestrel LiNK app, or to a Windows/Mac device with either the accessory Kestrel LiNK Dongle or waterproof USB Data Transfer Cable (Both sold separately).

Kestrels have been put to the test in some of the harshest conditions on the planet. U.S. Special Forces, combat weather teams, wildland firefighters, smoke jumpers, Mt. Everest expeditions and auto pit crews are just a few who rely on a Kestrel to provide them with the crucial environmental data they need. The Kestrel Heat Stress Tracker line has been used by the US Army, US Navy, athletic trainers, and even organizers at the Boston Marathon. There truly is no comparable environmental safety monitoring tool on the market. Adopt best safety practices for your team or workplace and add a Kestrel Heat Stress Tracker to your toolkit.

Engraving Note: Please make sure that everything is spelled correctly, as your engraved product cannot be returned. All sales are final on engraved products. Add 2 business days to all engraving orders.

Learn more about setting up your 5400 Heat Stress Tracker.


Which Kestrel Heat Stress Unit is right for me?

MEASUREMENTS Kestrel DROP D2HS Heat Stress Monitor Kestrel 3000HS Heat Stress Meter Kestrel 5400 Heat Stress Monitor Kestrel 5400 Heat Stress Tracker Pro with Compass and LiNK + Vane Mount
Temperature
Relative Humidity
Dew Point Temp.
Heat Index
Wind Speed  
Wind Chill  
Global Temp    
Naturally Aspirated Wet Bulb Temp    
Wet Bulb Globe Temp (WBGT)    
Thermal Work Limit    
Wet Bulb Temp (Psychrometric)    
Station Pressure (Absolute Pressure)    
Barometric Pressure    
Altitude    
Density Altitude    
Direction      
Crosswind      
Headwind / Tailwind      
  • Alarm buzzer
  • Alarm Light
  • Backlight - Switchable White/Red
  • Battery Life Indicator
  • Black Globe Temperature Sensor (1in/2.5cm)
  • Data Log Graph View
  • Data Logging - Adjustable Interval
  • Date & Time
  • Digital Compass (Pro model only)
  • Drop-Tested to MIL-STD-810G
  • FREE Kestrel LiNK Apps for Windows & Mac*
  • Integrated Flip Open Impeller Cover
  • Intuitive Tactile Up/Down/Enter Keypad
  • LiNK Wireless Communication - When Option Selected (Bluetooth low energy)*
  • Multilingual Menus (English, French, Spanish, German)
  • Minimum/Maximum/Average Reading
  • Pressure Sensor
  • Relative Humidity Sensor
  • Temperature Sensor (Patented External Isolated)
  • Waterproof to IP67 (3'/1M for 30 minutes)
  • WBGT Warning Flags - Settable

* Applies to LiNK models only

  • Battery - 1 x AA
  • Certificate Of Conformity (Spec Sheet)
  • Heat Stress Reference Card (Waterproof)
  • Instructions
  • Lanyard
  • Protective Drawstring Pouch
SENSORS
SENSORS ACCURACY RESOLUTION SPECIFICATION RANGE NOTES
Wind Speed |Air Larger of 3% of reading, least significant digit or 20 ft/min Speed 0.1 m/s
1 ft/min
0.1 km/h
0.1 mph
0.1 knots
1 B*
0.1 F/S*
0.6 to 40.0 m/s
118 to 7,874 ft/min
2.2 to 144.0 km/h
1.3 to 89.5 mph
1.2 to 77.8 knots
0 to 12 B*
2-131.2*
1 inch|25 mm diameter impeller with precision axle and low-friction Zytel® bearings. Startup speed stated as lower limit, readings may be taken down to 0.4 m/s |79 ft min|1.5 km/h |.9 mph |.8 kt after impeller startup. Off-axis accuracy -1% @ 5º off axis; -2% @ 10º; -3% @ 15º. Calibration drift < 1% after 100 hours use at 16 MPH|7 m/s. Replacement impeller (NK PN-0801) field installs without tools (US Patent 5,783,753). Wind speed calibration and testing should be done with triangle on impeller located at the top front face of the Kestrel. Measuring wind speeds above 60 m/s / 134.2 mph can damage the impeller
Ambient Temperature 0.9 °F
0.5 °C
0.1 °F
0.1 °C
-20.0 to 158.0 °F
-29.0 to 70.0 °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 Display & Battery Operational Temperature Limits.
Globe Temperature 2.5 °F
1.4 °C
0.1 °F
0.1 °C
-20.0 to 140.0 °F
-29.0 to 60.0 °C
Temperature inside 1in|25 mm black powder coated copper globe converted to Tg equivalent for standard 6 in|150 mm globe. Closest equivalence obtained with airflow greater than 2.2 mph|1 m/s.
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.
Compass
1/16th Cardinal Scale
0 to 360° 2-axis solid-state magneto-resistive sensor mounted perpendicular to unit plane. Accuracy of sensor dependent upon unit’s vertical position. Self-calibration routine eliminates magnetic error from batteries or unit and must be run after every full power- down (battery removal or change). Readout indicates direction to which the back of the unit is pointed when held in a vertical orientation. Declination/variation adjustable for True North readout.

CALCULATED MEASUREMENTS
MEASUREMENT ACCURACY (+/-) RESOLUTION SENSORS EMPLOYED
AHLU AHLU Accuracy derived from HLI accuracy accumulated over time. 1.0 Wind Speed,
Temperature Globe Temperature,
Relative Humidity
Altitude typical: 23.6 ft/7.2 m
from 750 to 1100 mBar
max: 48.2 ft/14.7 m
from 300 to 750 mBar
1 ft 1 m Pressure,
User Input (Reference Pressure)
Barometric Pressure 0.07 inHg
2.4 hPa|mbar
0.03 PSI
0.01 inHg
0.1 hPa|mbar
0.01 PSI
Pressure, User Input (Reference Altitude)
Crosswind & Headwind/Tailwind 7.1% 1 mph
1 ft/min
0.1 km/h
0.1 m/s
0.1 knots
Wind Speed, Compass
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
HLI 2.7 1.0 Wind Speed, Temperature Globe Temperature, Relative Humidity
Outdoor Wet Bulb Globe Temperature (WBGT) 1.3 °F
0.7 °C
0.1 °F
0.1 °C
Wind Speed, Temperature Globe Temperature, Rative Humidity, Pressure
Probability of Ignition (PIG) PIG Accuracy dependent on proximity of inputs to reference table steps. 10% 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
Thermal Work Limit (TWL) 10.9W/m2 0.1 °F
0.1 °C
TWind Speed,
Temperature Globe Temperature,
Relative Humidity,
Pressure
Wet Bulb Temperature - Psychrometric 3.2 °F
1.8 °C
0.1 °F
0.1 °C
Temperature, Relative Humidity Pressure
Wet Bulb Temperature - Naturally Aspirated (NWB TEMP) 1.4 °F
0.8 °C
0.1 °F
0.1 °C
Wind Speed, Temperature Globe Temperature, Relative Humidity, Pressure
Wind Chill 1.6 °F
0.9 °C
0.1 °F
0.1 °C
Wind Speed, Temperature
ADDITIONAL PRODUCT INFO
Display & Backlight Multifunction, multidigit monochrome dot-matrix display. Choice of white or red LED backlight.
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 & Graphical display Min/Max/Avg History Logged history stored and displayed for every measured value. Manual and auto data storage. Min/Max/Avg history may be reset independently. Auto-store interval settable from 2 seconds to 12 hours*, overwrite on or off. Logs even when display off except for 2 and 5 second intervals. Kestrel 5 series units hold over 10,000 data points.
data Upload & Bluetooth Data Connect Option Wireless range up to 100ft. Connection requires optional USB data transfer cable or Kestrel Link Dongle or Kestrel LiNK app. Employs Kestrel Link protocol for data transmission with Link supported devices. (Kestrel LiNK for iOS/Android, Kestrel Link for PC/MAC).
Clock/Calendar Real-time hours:minutes:seconds clock, calendar, automatic leap-year adjustment.
Auto Shutdown User-selectable – Off, 15-60 minutes with no key presses.
Languages English, French, German, Spanish.
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 Life AA Lithium included. Up to 400 hours of use, reduced by backlight, alert light and buzzer, or Bluetooth radio transmission use.
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)
Display & Battery Operational Temperature Limits 14° F to 131° F | -10 °C to 55 °C Measurements may be taken beyond the limits of the operational temperature range of the display and 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 5.0 x 1.9 x 1.1 in | 12.7 x 4.5 x 2.8 cm, 4.3 oz | 121 g. (Lithium battery included)

Kestrel 5 Series Certificates of Comformity

Kestrel 5400 Heat Stress Tracker specification chart



Models & SKUs:

  • Kestrel 5400 Heat Stress Tracker (Orange): 0854ORA
  • Kestrel 5400 Heat Stress Tracker (Tan): 0854TAN
  • Kestrel 5400 Heat Stress Tracker + Vane Mount (Orange): 0854VORA
  • Kestrel 5400 Heat Stress Tracker + Vane Mount (Tan): 0854VTAN
  • Kestrel 5400 Heat Stress Tracker Pro with Compass and LiNK + Vane Mount (Orange): 0854LVCORA
  • Kestrel 5400 Heat Stress Tracker Pro with Compass and LiNK + Vane Mount (TAN): 0854LVCTAN

Support Documents for all Kestrels

Replacing the Kestrel Impeller

Product Safety and Warranty Kestrel 5000 Series

WBGT Heat Stress Guidelines

Kestrel 5 Series Certificates of Comformity

Kestrel 5400 Heat Stress Tracker specification chart

LiNK (Kestrel)

This tutorial will show you how to create a graph of the data that you exported from your Kestrel 5000 series or Kestrel DROP using one of the Kestrel LiNK applications.

An application that can be used to view and analyze your Kestrel data on an Android device.

Kestrel 5 Series Downloads

The attached document in Excel will help with determining average wind direction and the use of a wind rose by using the exported CSV file. This would be pertinent to any of the 5500 models, especially important for spray drift and measurements in the protected zones.

Tips for taking accurate measurements Support tab at www.kestrelinstruments.com

Kestrel 5 Series Troubleshooting Documents

A simple guide to help you update your Firmware on your Kestrel using LiNK for Android

A simple guide to help you update your Firmware on your Kestrel using LiNK for Windows

Troubleshooting Bluetooth Dongle Issues with the Kestrel 5000 Series Models and LiNK for Windows.

Here is a graphical guide on locating various micro-climates in a given area to help with Kestrel 5400 placement for monitoring WBGT.

Heat Index Downloads

Recommended Modifications to Athletic Participation Based on the Heat Index

Recommended Modifications to Athletic Participation Based on the Heat Index Celsius

Korey Stringer Small Price of Survival Article 2016-09 Regarding Heat Stress

Kestrel LiNK Manuals and Documentation


Kestrel 5 Series Instruction Manuals

Kestrel Vane Mount Instructions

Kestrel 5400 Heat Stress Tracker User Guide

Visit our support page for FAQ and more.

  1. How to Prevent Heat-Related Illnesses & Death with WBGT Heat Stress Monitoring How to Prevent Heat-Related Illnesses & Death with WBGT Heat Stress Monitoring
  2. OSHA National Emphasis Program on Heat Illness Prevention Focuses on Increased Worker Safety & Protection OSHA National Emphasis Program on Heat Illness Prevention Focuses on Increased Worker Safety & Protection
  3. Heat Stress Safety as Team Sports Resume Heat Stress Safety as Team Sports Resume
  4. Keep Your Workers Safe With Kestrel Instruments Keep Your Workers Safe With Kestrel Instruments Construction workers brave many hazards. Working with heavy equipment, at various heights, and in dangerous environmental conditions cause injuries consistently. In 2017, a total of 259 on-the-job deaths were reported – or 14.1 deaths per 100,000 full-time construction workers. Also that year, 21,760 nonfatal injuries were reported.
  5. What is Density Altitude? What is Density Altitude? While many of us don't think about density altitude in our everyday lives, it impacts the environment and even how airplanes perform while in the air. With dense air, nitrogen and oxygen are tightly packed together to make the surrounding air heavier than other locations. Air density varies depending on where you're located in the world, but temperature and altitude are two primary factors that influence density altitude.
  6. Barometric Pressure vs. Station Pressure: What's the Difference? Barometric Pressure vs. Station Pressure: What's the Difference? When it comes to measuring barometric pressure, there is a bit of science going on behind the scenes. Let's take a look at the difference between barometric vs. station pressure and the variables that go into calculating the two readings.
  7. America’s Favorite Sport: How Weather Impacts Football America’s Favorite Sport: How Weather Impacts Football According to favoritism polls from Gallup, football is the most popular sport in America. That's not exactly surprising considering the large crowds regularly packing the stadiums, gathering at local bars and pubs, or huddling around the TV in the family room to cheer on the hometown team.
  8. Monitoring Military Heat Stress: 4 Essential Tips for Saving Lives with the Kestrel 5400 Monitoring Military Heat Stress: 4 Essential Tips for Saving Lives with the Kestrel 5400 Heat stress is a serious concern for all military personnel. Exertional heat stress can cause severe injuries and even death, but the good news is that it’s 100% preventable. The Kestrel 5400 Heat Stress Tracker in tan is the preferred choice of the military for monitoring the environmental conditions, helping to save countless lives of military personnel across the globe.
  9. Understanding Environmental Heat Stress This article has been republished from For Athletic Trainers with permission from the Korey Stringer Institute, a leader in heat stress awareness, education, and advocacy driven by a mission to maximize performance, optimize safety, and prevent sudden death due to the effects of exertional heat stress. By: Yuri Hosokawa, PhD, ATC, LAT, Korey Stringer Institute, University of Connecticut As the brutal summer heat takes a toll across the coun
  10. WBGT: A Key Measurement in Preventing Heat Stress Injury WBGT: A Key Measurement in Preventing Heat Stress Injury Heat stress is a condition that occurs when the body is unable to regulate its internal temperature and cool itself through sweating. Heat stress shows many symptoms and encompasses several heat-induced illnesses such as heat stroke, heat exhaustion, heat cramps and heat rashes. These conditions are more likely to occur during hot summer months, but may affect workers and athletes in various climates and conditions year round. The most common com
  11. Kestrel Heat Stress Trackers Keep Special Olympic Athletes Safe Kestrel Heat Stress Trackers Keep Special Olympic Athletes Safe Last month, the Kestrel Heat Stress Trackers were used during the 2015 World Games in Los Angeles to ensure the health and safety of the more than 6,500 international athletes competing under the hot mid-summer sun. Recognizing the importance of on-site conditions monitoring for athletes, the event organizers deployed five Kestrel Heat Stress Trackers mounted on tripods to track wet bulb globe temperature (WBGT) and help prevent exertional heat s