3M user manual Introduction, QUESTempº 48N Model

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Introduction

Introduction

Up and Running overview

Introduction

The QUESTempº 48N offers traditional heat stress monitoring without the aggravation of maintaining a wet bulb. Through collaboration with Professor Dr. Thomas Bernard, from the College of Public Health at the University of South Florida, mathematical models were implemented to create a Waterless Wet Bulb calculation through a combination of dry bulb temperature, globe temperature, relative humidity, and air flow.

Figure 1-1: QUESTempº 48N in a thermal environment

QUESTempº 48N Model

The QUESTempº 48N model was specifically engineered for the Department of Defense Ashore and Afloat Operations in which conditions require hand’s free monitoring, in-the-field user RH/WBGT sensor alignments, and snapshot measurement logging (called “event logging mode”).

The QT48N measures and calculates the dry bulb, wet bulb, globe, WBGT outdoors, and relative humidity with two different types of data logging modes – as a time history session or an event logging mode.

You also have the capability to measure stay times in order to manage work/rest regimens. Guidance is based on the screening criteria for heat stress as defined in the ACGIH TLV Handbook, U.S. Navy PHEL charts, and Flag Conditions for U.S. Navy/Marine Corp. Ashore.