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Welcome to the Zelus Blog Dedicated to All Things Heat Related

LightBulb With Water Inside on white background

Scott Schultz — August 10, 2024

Difference Between Wet Bulb Temperature and Wet Bulb Globe Temperature (WBGT)

It is crucial to accurately distinguish between Wet Bulb Globe Temperature (WBGT) and Wet Bulb Temperature, especially when it comes to health and safety guidelines. Confusing these two metrics can—and has—led to fatal outcomes. Wet Bulb Globe Temperature (WBGT) is a composite index that estimates…

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A picture of a a thermometer where the bulb is a globe.

Scott Schultz — November 15, 2023

Why the Kestrel 5400 Occasionally Gives Higher Readings Than the Zelus WBGT System

Multiple independent studies have demonstrated that the Kestrel 5400 tends to provide WBGT readings that are high

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colorful map of the world

Scott Schultz — October 30, 2023

Wet Bulb Globe Temperature VS Heat Index

To understand the differences between wet bulb globe temperature (WBGT) and heat index we need to first understand each measurement and how it is calculated. I will go over both WBGT and heat index first to familiarize ourselves with them. Wet Bulb Globe Temperature (WBGT)…

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man throwing water for cooling temperature and hand holding thermometer under heat weather

Scott Schultz — October 12, 2023

The Best Heat Stress Monitors That Measure Wet Bulb Globe Temperature (WBGT)

We know that having a good heat stress plan for athletes significantly reduces the incidence of exertional heat illness (EHI) and the risk of death from heat stroke. One of the foundational elements of almost all heat stress plans is measuring the wet bulb globe…

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Tired young man resting after workout leaning on a chain link fence

Scott Schultz — September 29, 2023

Wet Bulb Globe Temperature (WBGT) What It Is and Why We Care

Wet bulb globe temperature (WBGT) is a calculated temperature that professionals use to determine the amount of heat stress on an individual. It has been proven to be the most accurate predictor of heat stress ever developed. WBGT takes into account the air temperature, humidity, wind speed, and…

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person holding a phone open to the Zelus system app

Scott Schultz — September 13, 2023

Welcome to the Zelus Blog Dedicated to All Things Heat Related

For my first blog post I would like to introduce myself.  My name is Scott Schultz MD.  I am a board-certified emergency medicine physician who became obsessed by heat illness and specifically the Wet Bulb Globe Temperature (WBGT).  I also founded Zelusports.com and the Zelus…

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are you ready

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