Heat Stress WBGT Meter


This compact and lightweight heat stress monitor has been designed to quickly evaluate personal heat stress exposure.


This heat stress meter measures temperature, humidity, and direct or radiant sunlight with Wet Bulb Globe Temperature (WBGT). The R6210 is OSHA recommended with a user-adjustable WBGT audible alarm and the ability to adjust settings for indoor or outdoor measurements. This personal heat stress meter features an easy-to-read LCD display, flexible armband, and tripod mount providing flexibility to meet many application requirements.


  • Measures ambient temperature, humidity, wet bulb temperature, black globe temperature, WBGT (wet bulb global temperature)
  • Black Globe Temperature (TG) monitors the effects of direct solar radiation on an exposed surface
  • IN/OUT function displays the WBGT value with or without direct sun exposure
  • Multi-line backlit LCD display simultaneously displays 3 measurements
  • User-selectable units of measure (°F or °C)
  • User-adjustable WBGT threshold alarm (audible)
  • Flexible armband and tripod mount for long-term monitoring
  • Low battery indicator
Measuring RangesAir Temperature: 32 to 122°F (0 to 50°C)
Black Globe: 32 to 176°F (0 to 80°C)
WBGT: 32 to 122°F (0 to 50°C)
AccuracyAir Temperature: ±1.1°F (±0.6°C)
Black Globe: ±1.1°F (±0.6°C)
WBGT: ±3.6°F (±2°C)
Measuring Ranges5 to 90% RH
Accuracy (at 25°C)30 to 90% RH: ±5%
Rest of Range: ±7%
Resolution0.1% RH
General Specifications
Sampling Interval20 seconds
WBGT AlarmYes (audible)
Tripod MountableYes
Low Battery IndicatorYes
Battery LifeApprox. 500 hours
Power SupplyCR2032 battery
Product CertificationsCE, RoHS
Operating Temperature32 to 122°F (0 to 50°C)
Operating Humidity<80% (non-condensing)
Storage Temperature32 to 140°F (0 to 60°C)
Storage Humidity<70% (non-condensing)
Maximum Operating Altitude6561' (2000m)
Dimensions4.6 x 2.4 x 1.9" (116 x 60 x 50mm)
Weight2.8oz (80g)

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