3M 48N 用户手册
1 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
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
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”).
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.
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
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.
Introduction