HomeEnvironmentalParameter Measurement › › 3M QUESTEMP° 44/46/48N Waterless Wet Bulb Area Heat Stress Monitors


3M QUESTEMP° 44/46/48N Waterless Wet Bulb Area Heat Stress Monitors

The QUESTemp° 44/46/48N utilizes a waterless wet bulb sensor designed for working environments where daily instrument upkeep is difficult.

A high-quality humidity sensor and proprietary algorithm perform the calculation of the Wet Bulb Globe Temperature (WBGT) values, eliminating the hassle of daily wet bulb maintenance.

Features and Benefits

  Utilizes WBGT sensing technology; the standard for heat stress management
  Proven traditional wet bulb sensing technology available on QUESTemp models 32, 34 and 36
  Waterless wet bulb QUESTemp models 44, 66, 48N eliminate daily maintenance
  Convenient stay time parameters per multiple standards help determine work-rest ratios
  IP 54 ingress rating helps protect unit from exposure to dirt, dust, oil and water
  Designed to withstand the rigors of everyday use in demanding environments




Data Sheet
44/46 Manual
48N Manual
Quest Brochure

Ordering Information


QT-44 QT-44 HEAT STRESS MONITOR
QT-46 QT-46 HEAT STRESS MONITOR
QT-46-3 QT-46 TRI-SENSOR KIT
QT-48N QT-48N HEAT STRESS MONITOR

Calibration and Repair

CA-QT-44 QT-44 Accredited Calibration
RA-QT-44 QT-44 Accredited Repair & Calibration
RS-QT-44 QT-44 Standard Repair & Calibration
CS-QT-44 QT-44 Standard Calibration
CA-QT-46 QT-46 Accredited Calibration
RA-QT-46 QT-46 Accredited Repair & Calibration
RS-QT-46 QT-46 Standard Repair & Calibration
CS-QT-46 QT-46 Standard Calibration
CA-QT-48N QT-48N Accredited Calibration
RA-QT-48N QT-48N Accredited Repair & Calibration
RS-QT-48N QT-48N Standard Repair & Calibration
CS-QT-48N QT-48N Standard Calibration

Accessories and Replacement Parts

053-287 DIGITAL ORAL THERMOMETER
053-288 DIGITAL ORAL THERM. SHEATHS
EAR INSERTS Foam EAR Inserts (50 per bag)
EARLOOPS-QT EARLOOPS for QT-II
058-867 IBM INPUT CABLE ASBLY-
056-904 CARRYING CASE, 5 PK QT-II
056-906 QT-II CARRYING CASE ASSY
QT-NMH-120 QTEMP 120V NIMH BATT & CHARGER
QT-NMH-220 QTEMP 220V NIMH BATT & CHARGER
056-630 BATTERY PACK, NIMH, QT30
015-910 Universal Power Supply 120V/9V 1A MIN
015-680 Kit Universal Power Supply 220V/9V 1AMin
056-679 KIT, HEAT STRESS WICKING
056-068 BOTTLE, 2 OZ.
057-333 QT-48N NECK STRAP
QT3X-BC QT-3X REPLACEMENT BATT COVER
QT3X-DBS QT HSM DRY BULB SHIELD KIT
053-923 Assy, Heat Stress Verification Module
100-452 75% CALIBRATION SALT BOTTLE
100-451 33% CALIBRATION SALT BOTTLE
059-045 Tripod, SUNPAK 4200XL
056-794 ASSY-SENSORBAR W/O HUMIDITY
056-795 QT3X SENSOR BAR ASSEMBLY W/HUM.
056-780 ASSY SENSORBAR 6"GLB W/HUM.
057-902 QT4X SENSOR BAR ASSY W/HUM
057-909 ASSY, QT 48N, SENSOR BAR
053-924 ASSY-CABLE 6FT CUSTOM SCREW
053-925 ASSY-CABLE 25FT CUSTOM SCREW
053-926 ASSY CABLE 100FT CUSTOM SCREW
053-927 ASSY CABLE 200FT CUSTOM SCREW
056-875 ASSY, ACTIVE PARALLEL CABLE
054-715 ASSY-ACTDIN SERIAL INTERFACE
053-922 AIRMOLD KIT - HEATSTRESS
053-947 ASSY, QUESTEMP KIT / 6" GLOBE
053-939 ASSY-3-SENSOR CASE
053-946 ASSY, 3-SENSOR KIT / 6" GLOBES
AIRPROBE-120 AIR PROBE-9 AIR FLOW SEN/120V
053-037 CHARGER 120VAC BLACK & DECKER
053-039 3.6V NIMH Battery



Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.

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