QUESTemp QT-36 Portable Heat Stress Monitors

Area Heat Stress and Thermal Comfort Monitor.

The QUESTemp™ 36 simplifies heat stress management efforts with real time guidance on stay times and work/rest regimens. Guidance is based on screening criteria as defined in the ACGIH TLV Handbook, U.S. Navy PHEL Charts and EPRI Action Limits.
  • Kit includes QUESTemp°™ 36 unit with 2" style globe sensor and standard accessories.
  • Real-time readings for wet/dry bulb, globe, WBGT indoor/outdoor, relative humidity and heat index.
  • Optional remote sensors for up to (3) simultaneously monitored areas.
  • Rated intrinsically safe.
  • Data logging.
  • Intrinsic safety certification.
An optional detachable probe for measuring air velocity extends the applications for the QUESTemp° 36 beyond traditional heat stress management. The QUESTemp° 36 can be used as an indoor thermal comfort monitor using the air velocity probe, temperature and RH sensor readings simultaneously. 
The QUESTemp° 36 QT-36 (with Alkaline Battery) includes Standard Accessories, (1) Sensor Bar Assembly and 2" Style Globe Sensor.

For more information on the QUESTemp QT-36 Portable Heat Stress Monitors, contact your local Air-Met office. 
  • Radiant heat shield on dry bulb sensor
  • Improved wet bulb reservoir
  • User-selectable logging intervals
  • Detection Management Software compatible
  • Measuring parameters
    • Dry bulb, wet bulb, and globe temperature 
    • Relative humidity 
    • Air velocity (optional, required for LEED studies) 
    • Indoor and outdoor WBGT index 
    • Head-Torso-Ankle-weighted average WBGT 
    • Heat index/Humidex
  • Real-time stay time and work/ rest regimen guidance
    • Based on heat stress screening criteria defined in the ACGIH TLV Handbook, U.S. Navy PHEL Charts and EPRI Action Limits. No charts, guides, or lookup tables needed! 
  • Integral RH sensor - enhances monitor versatility. 
  • Optional detachable Air-Probe-9 air velocity probe
    • Extends applications to LEED Green Building studies and other non-traditional heat stress measurements. 
  • Long battery life or continuous AC operation:
    • 9-volt disposable batteries provide 150 hours operation; optional rechargeable NiMH batteries provide 300 hours operation. 
  • Rugged IP-54 rated aluminium case
    • Splash and dust-resistant
 Natural Wet Bulb ModelsWaterless Wet Bulb Models
Measurement Parameters: QT°32 QT°34 QT°36 QT°44 QT°46 QT°48N
Dry Bulb, Wet Bulb and Globe Temperatures, Relative Humidity
Air Velocity     option   option  
WBGT (indoor) Index  
WBGT (outdoor) Index
Heat Index/ HUMIDEX  
Temperature Reading: Celsius or Fahrenheit
Data Logging Intervals: 1, 2, 5, 10, 15, 30 or 60 minutes  
Event Logging Mode          
Display Languages: Choose from Chinese, Czech, English, French, German,
Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Spanish, Swedish,
and Turkish
Time & Date Stamping with Clock and Calendar  
Displayed Stay Times: ACGIH TLV, U.S. Navy PHEL charts, U.S. Navy/Marine Corp. Ashore Flag Conditions, EPRI Action Limits (QT°48N excludes EPRI)      
Head-Torso-Ankle Weighted Average WBGT (optional with tri-sensors) option option option option option  
Dry Bulb Sensor - 1000 Ohm platinum RTD
Accuracy and Ranges: +/-0.5 from 0° C to 120° C (+/-0.9° F from 32° F to 248° F)
Wet Bulb Sensor - 1000 Ohm platinum RTD
Accuracy and Ranges: +/-0.5 from 0° C to 120° C (+/-0.9° F from 32° F to 248° F)
Waterless Wet Bulb (Humidity) sensor
Accuracy and Ranges: +/-1.1° C (k=2) between 0° C and 80° C (32° F and 176° F)
Globe Sensor - 1000 Ohm platinum RTD
Accuracy and Ranges: +/-0.5 from 0° C to 120° C (+/-0.9° F from 32° F to 248° F)
Relative Humidity Sensor
Accuracy and Ranges: +/-5% from 20 to 95% (non-condensing)
Air Velocity Probe - Omni-directional heated thermistor
Accuracy and Ranges: +/-(0.1 m/s + 4%) from 0 to 20 m/s
    option   option  
Operating Temperature Range:            
Sensor Assembly: -5° C to 100° C (23° F to 212° F)
Electronics: -5° C to 60° C (23° F to 140° F)
Data Management:            
Detection Management Software DMS
Thermal Comfort Indices in Accordance with ISO 7730
Predicted Mean Vote (PMV) and Predicted Percent Dissatisfied (PPD)
    option   option  
Output: RS-232 Serial Printer / Computer Interface; Parallel Printer Interface  
Power Source:            
9V Disposable Batteries; Hours of Battery Life 140 80
NiMH Rechargeable Battery; Hours of Battery Life 300 160
D-ring with Lanyard Attachment. Allows for Hands-Free Monitoring
Tripod Mount / Remote Sensor Bar.
Allows for up to 61 m (~200 ft) Long Distance Measurement
IP54 Water & Dust Ingress Protection Rating
Case Size (including mounted sensor assembly) 23.4 x 18.3 x 7.6 cm (9.2" x 7.2" x 3")
Weight: 1.2 kg (2.6 lb) with Mounted Sensor Assembly
Standards and Approvals: Intrinsic Safety, UL/CSA standards for Class I groups A, B, C & D,
Class II groups E, F & G, Class III temperature code T3 & ATEX
Electromagnetic Conformance: CE Mark

  • Air Flow in flume hoods
  • Military training facilities
  • Athletic training & events facilities
  • Warehousing & distribution centres
  • Manufacturing plants
  • Nuclear & fossil fuel power generation plants
  • Shipbuilding operations
  • Occupational heat stress management
  • Indoor air quality investigations
  • Thermal comfort monitoring
  • Risk analysis of job function or activity