- Heat Stress Index measures how hot it feels when humidity is combined with temperature, air movement, and radiant heat
- Black Globe Temperature (TG) monitors the effects of direct solarradiation on an exposed surface
- Air Temperature (TA) plus Relative Humidity (RH)
- Selectable units of °F and °C
- In/Out Function displays the WGBT value with or without direct sun exposure
- Auto Power Off with override
- Built-in RS-232 interface with optional Windows® compatible software
- Complete with two AAA batteries
| Specifications | Range | Basic Accuracy |
| Wet Bulb Globe Temperature (WBGT) | 32 to 122°F (0 to 50°C) | ±4°F/2°C |
| Black Globe Temperature (TG) | 32 to 176°F (0 to 80°C) | ±4°F/2°C |
| Air Temperature (TA) | 32 to 122°ºF (0 to 50ºC) | ±1.8°F/1.0°C |
| Humidity | 0 to 100%RH | ±3%RH |
| Dimensions | Meter: 10 x 1.9 x 1.1″ (254 x 48.7 x 29.4mm) Ball: 1.6″ dia, 1.4″ high (40mm diameter, 35mm high) | |
| Weight | 4.8oz (136g) | |
| Thomas No | Mfr No | Description |
|---|---|---|
| 1218M13 | HT30 | Heat Stress WBGT (Wet Bulb Globe Temperature) Meter |
| 1218M14 | HT30-NISTL | Heat Stress WBGT (Wet Bulb Globe Temperature) Meter with NISTL |
