3M 46, 44 user manual Introduction, QUESTempº Models

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1 Introduction

Introduction

Up and Running overview

Introduction

The new heat stress instruments, the QUESTempº 44 and QUESTempº 46, offer 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. The Waterless Wet Bulb is used to calculate the Wet Bulb Globe Temperature (WBGT) which is a widely- used method to monitor environmental conditions related to heat stress.

Figure 1-1: QUESTempº 44/46 in a thermal environment

QUESTempº Models

QUESTempº 44 and QUESTempº 46 both measure and calculate the dry bulb, wet bulb, globe, WBGT indoors, WBGT outdoors, relative humidity, and Heat Index or Humidex.

With the QUESTempº 46, you 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 ACHIH TLV Handbook, U.S. Navy PHEL charts, U.S. Navy/Marine Corp. Ashore Flag system, and EPRI Action Limits.

An additional feature with the QUESTempº 46 is an optional detachable probe for measuring air velocity to determine appropriate levels of indoor thermal comfort monitoring.

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Contents Market Leader Contents Displayed Items Iii List of Figures List of TablesIntroduction QUESTempº ModelsGetting Started Up and Running overviewKeypad Operation Down Arrow key Enter keyUp Arrow key Run Stop keyTurning on/off and basic operation Placing the QUESTempº 44/46 on the job siteGlobe Thermometer SensorsAbout the sensor bar Waterless Wetbulb Sensor and Relative Humidity SensorTri-sensor weighted average Remote, Sensors 2Waterless Wetbulb Computing Waterless wetbulb and wind speedHeat Index/Humidex WetBulb Globe TemperatureStay Times/Rest Times QTº46 only AirflowThermal Comfort Setup Operating QUESTempº 44/46View Setup for Waterless Wetbulb measurement airflow rate Index Setting NotesReset PrintRun Displayed Items Flow 0.3m/s Date Stay TimeData Logging Data LoggingElectronic sensor check Performing an electronic sensor checkSensor Alignment RH Sensor AlignmentLow RH Alignment screen Adjust % to 33% using up/down arrow Printing PrintingPrintingSerial Parallel Heat Stress ReportAirflow functionality Airflow FunctionalityData Logging Airflow Operational CheckOperating sequence Batteries for Air ProbePower options Volt Alkaline Battery ReplacementApproved 9-Volt Batteries NiMH Battery Pack 29 NiMH rechargeable batteryAppendix a Specifications Appendix aCharge Time NiMH Battery Pack Appendix B Heat Exposure Tables Appendix BAcgih Clothing Corrections United States NavyUnited States Navy Electrical power research institute Epri Flag Conditions for U.S. Navy/Marine Corp. AshoreAppendix C Accessories Air Probe AccessoriesAppendix C QUESTempo 44/46 Communication setupAppendix D 3MTM Detection Management Software DMS Appendix D31 QT⁰44/46 downloading data Downloading data with the QT⁰44/46 32 Downloading QT⁰44/46 filesCharts and Graphs in Panel layout view PLV Viewing Data in DMSSelecting a session/study 34 QT⁰44/46 data in panel layout view Remember setting Inserting on-site testing images Reports and PrintingService Department and Technical Support 1 800 3M ServiceWarranty CalibrationAbout 3M Personal Safety About Us