3M QUESTemp 32 User manual

QUESTempo32 model
Quest Technologies, a 3M company
1060 Corporate Center Drive,
Oconomowoc, WI 53066 USA
Phone: [phone] or (Toll Free): 800-245-0779
www.questtechnologies.com
Quick Start Pocket Guide
3M Occupational Health and Environmental Safety Division
3MTM QUESTempoHeat Stress Monitors

QUESTempo32 components
Two line Display
Sensor Bar 2&3
Dry bulb thermometer
Up and Running
1. Make sure the wet bulb wick is clean. Fill reservoir with distilled water. See
“Filling wet bulb reservoir” below.
2. Place the instrument in the work area approximate 3.5 feet off the ground.
3. Power on the instrument by pressing I/O Enter key and check the battery. (If
the battery is less than or equal to 6.4 volts, replace or recharge the battery.)
4. Allow 10 minutes for sensors to stabilize.
5. The measurements will be displayed. Press I/O Enter key to page through the
screens.
• Screens include: Wet Bulb and Dry Bulb screen, Globe screen, WBGTi
and WBGTo screen, RH and H.I. screen, and BAT (Battery voltage)
Filling wet bulb reservoir: Remove the reservoir cover & ll with distilled or
de-ionized water. Replace cover.
Removable sensor bar
Globe Thermometer
Natural wet bulb thermometer
Up/down arrow keys
I/O Enter key
Setup key
Wick
Reservoir cover
Reservoir

Common heat stress terms
Acclimatization: the body’s ability to adapt to heat exposure up to a certain point.
Body core temperature: The temperature of the arterial blood irrigating the thermo-
regulatory centers in the hypothalamus.
Conduction: If the transfer of heat between materials that contact each other. Heat passes
from the warmer material to the cooler material. For example, a worker’s skin can transfer
heat to a contacting surface if that surface is cooler, and vice versa.
Convection: Is the transfer of heat in a moving uid. Air owing past the body can cool
the body if the air temperature is cool. On the other hand, air that exceeds 35oC (95oF) can
increase the heat load on the body.
Dry Bulb Temperature: The temperature of air as registered by a thermal sensor shielded
from direct radiant energy sources.
Evaporative Cooling: Takes place when sweat evaporates from the skin. High humidity
reduces the rate of evaporation and thus reduces the effectiveness of the body’s primary
cooling mechanism.
Globe Thermometer: A black copper sphere with an internal thermal sensor used to deter-
mine the effect of surrounding radiant heat.
Heat Index (HI): The Heat Index represents how an average person feels relative to climate
conditions. For a given temperature, the higher humidity, the higher the Heat Index.
Heat Stress: The total net heat load on the body which results from exposure to external
sources and from internal metabolic heat production.
Metabolic Heat: Heat produced by the body in relationship to work that the individual is
doing. The more strenuous the work, the higher the metabolic heat and the harder the body
has to work to eliminate it.
Micro- Environment: A self-contained environment, such as the inside of a hazardous
materials suit, in which thermal exchange with the surrounding air is limited.

Common heat stress terms
Natural Wet Bulb Temperature: used to measure the effect of humidity in air obtained by a
wetted sensor that is exposed to natural air movement.
Radiant Heat: Heat which is transferred to cooler objects in the surrounding environment.
Workers can incur exposure to radiant heat from the sun, hot asphalt, machines and ovens.
Relative Humidity: The ratio of the amount of water vapor in the air compared to the greatest
amount possible at a specic temperature.
WBGT (Wet Bulb Globe Temperature): a weighted average which combines the effects of
humidity, air velocity, ambient air temperature and radiant energy into one single index. The
resulting WBGT values can be compared to indices of work-rest regimens (stay times) based
upon work loads.
WBGT (indoor) = 0.7WB + 0.3G (denoted as “WBGTi” on the display)
WBGT (outdoor) = 0.7WB + 0.2G + 0.1DB (denoted as “WBGTo” on the display)
Occupational Health &
Environmental Safety Division
Quest Technologies, a 3M Company
ISO 9001 Registered Company
ISO 17025 Accredited Calibration Lab
1060 Corporate Center Drive
Oconomowoc, WI 53066
Customer Service: 262-567-9157
Toll Free: 800-245-0779
www.questtechnologies.com
Please recycle. Printed in USA.
© 2010 3M
All rights reserved.
053-045 Rev.C 12/10