Extech HT30 Heat Stress WBGT Meter (Wet Bulb Globe Temperature Tester)

Manufacturer: Extech Instruments (FLIR Systems)

Model: HT30

Measurement Parameters: WBGT (in/out of direct sunlight), Black Globe Temperature (TG), Air Temperature (TA), Relative Humidity (%RH), Wet Bulb (WT), and Dew Point (DP)

WBGT Range & Accuracy: 32°F to 122°F (0°C to 50°C) | ±2°F (±1°C)

Black Globe Range & Accuracy: 32°F to 176°F (0°C to 80°C) | ±3°F (±1.5°C)

Air Temperature Range: 32°F to 122°F (0°C to 50°C) | ±1.5°F (±0.8°C)

Humidity Range & Accuracy: 0.0% to 100.0% RH | ±3% RH

Black Globe Sensor: 1.6″ (40 mm) diameter copper ball

Alarm Function: Adjustable audible WBGT threshold alarm

Display: Multi-parameter LCD screen with simultaneous temperature and humidity readouts

Mounting: Built-in tripod mount for continuous area monitoring

Power Source: 2 x AAA batteries (included) with auto power-off function

Standards & Compliance: Meets OSHA, ACGIH, and military heat safety monitoring protocols