Heat Stress WBGT Meter
Extech HT30 Heat Stress WBGT Meter
Protect personnel and ensure safety compliance with comprehensive heat stress monitoring.
The Extech HT30 is an essential occupational health and safety instrument designed to measure Wet Bulb Globe Temperature (WBGT). By factoring in the combined effects of ambient temperature, relative humidity, and radiant heat (direct sunlight), this meter provides a highly accurate assessment of true heat stress conditions. It is the ideal diagnostic tool for industrial hygienists, site safety officers, and sports facility managers who need to establish safe work-rest cycles and prevent heat-related injuries in physically demanding environments.
Key Technical Capabilities
Comprehensive WBGT Calculation: Accurately evaluates the heat stress index, providing a realistic measurement of how hot it actually feels to the human body under current environmental constraints.
Black Globe Temperature (TG): Features a specialized black globe sensor designed to monitor and measure the specific impact of direct radiant solar radiation on exposed personnel.
Indoor/Outdoor Modes: Allows technicians to toggle WBGT calculations for environments with or without direct sun exposure, ensuring accurate readings for both indoor factory floors and outdoor construction sites.
Programmable Alarms: Equipped with user-adjustable audible and visual alarms that instantly warn safety managers when the heat index approaches or exceeds critical safety thresholds.
Ergonomic & Mountable: Designed for both quick handheld spot-checks and long-term monitoring via a built-in tripod mount.
Technical Specifications Summary
| Parameter | Measurement Range | Basic Accuracy |
| Wet Bulb Globe Temp (WBGT) | 0°C to 50°C (32°F to 122°F) | ±2°C (±4°F) |
| Black Globe Temp (TG) | 0°C to 80°C (32°F to 176°F) | ±2°C (±4°F) |
| Air Temperature (TA) | 0°C to 50°C (32°F to 122°F) | ±1.0°C (±1.8°F) |
| Relative Humidity | 0 to 100% RH | ±3% RH |
Safeguard your workforce with industrial-grade heat stress diagnostics