1. Testing and Measurement
  2. Indoor Air Quality and HVAC
Extech
Psychrometer, Digital
Model No :
RH300
Part Code :
RH300

Overview

The RH300 is a compact meter that is ideal for field applications. Simultaneously displays relative humidity (10% to 90% 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. Built-in protective sensor cap. Other features include Data Hold, Auto Power Off, and MAX/MIN reading. Complete with 2 AAA batteries

Overview
The RH300 is a compact meter that is ideal for field applications. Simultaneously displays relative humidity (10% to 90% 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. Built-in protective sensor cap. Other features include Data Hold, Auto Power Off, and MAX/MIN reading. Complete with 2 AAA batteries
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
Warranty
2 Years
General Specifications
- Dimensions : 7 x 1.9 x 1" (178.5 x 48.4 x 24.7mm)
- Weight : 3.3oz (95g)
Electrical Specifications
- Humidity :
• Range : 10 to 90%RH
• Max Resolution : 0.1%RH
• Basic Accuracy - ±3%RH
- Temperature (internal) :
• Range : -4 to 122°F (-20 to 50°C)
• Max Resolution : 0.1°
• Basic Accuracy : ±1.8°F or ±1°C
- Temperature (external) :
• Range : -4 to 158°F (-20 to 70°C)
• Max Resolution : 0.1°
• Basic Accuracy : ±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)