The Extech RH300 is a compact digital psychrometer that is ideal for field applications. Simultaneously displays relative humidity (10 to 90 percent RH), air temperature and dew point or wet bulb.
Calculates T1-T2 differential (air temperature minus external probe temperature) using optional probe (TP890), and T2 minus dew point. The compact Extech RH300 Hygro-Thermometer Psychrometer is well-suited for field applications. Unique sensor cap closes to protect to protect meter during storage. Advanced features include Data Hold, selectable Auto Power Off, and MAX/MIN/Average reading.
Features:
- Simultaneous display of %RH, Temperature and Dew point or Wet Bulb or Probe Temperature
- Wet bulb measurements without slinging
- Calculates T1-T2 differential (Air Temperature-External Probe Temperature) using optional probe
- Unique sensor cap design twists to closed position for protection during storage
- Switchable °F/°C temperature units with 0.1° resolution
- Complete with 2 AAA batteries
| Specifications |
Ranges |
Max Resolution |
Basic Accuracy |
| Humidity |
10 to 90%RH |
0.1%RH |
±3%RH |
| Temperature (internal) |
-4 to 122°F (-20 to 50°C) |
0.1° |
±1.8°F or ±1°C |
| Temperature (external) |
-4 to 158°F (-20 to 70°C) |
0.1° |
±1.8°F or ±1°C |
| Dew Point |
-90.4 to 122°F (-68.0 to 49.9°C) |
| Wet Bulb |
-6.9 to 122°F (-21.6 to 49.9°C) |
| Dimensions |
7 x 1.9 x 1" (178.5 x 48.4 x 24.7mm) |
| Weight |
3.3oz (95g) |
