Extech RH390 Precision Psychrometer

Precison Psychrometer with the highest 2% RH accuracy. Built-in probe includes wet bulb and dew point measurements for quick assesment of air moisture content.

• Fast response time when taking a measurement (<30 seconds)
• Slim design with rubberized sides for better grip and for one hand operation
• Dual backlit display
• Simultaneous display of:
• Humidity/Temperature
• Humidity/Dew Point
• Humidity/Wet Bulb
• Data Hold and Min/Max functions
• Auto power off and low battery indicator
• CE approved; 1 year warranty
• Complete with carrying case and 9V battery

• Humidity
• Wet bulb
• Dew Point
• Air Temperature
• External Probe Temperature measurements

• Humidity 0 to 100%RH
• Temperature (Internal) -4 to 199°F (-20 to 100°C)
• Basic Accuracy ±2%RH, ±1.8°F/1°C
• Max. Resolution 0.1%RH, 0.1°F/°C
• Dewpoint -22 to 199°F (-30 to 100°C)
• Wet Bulb 32 to 176 °F (0 to 80°C)
• Dimensions 7.8×1.7×1.3″ (200x45x33mm)
• Weight 7oz (200g)

• Extech RH390 Data Sheet.pdf
• Extech RH390 User’s Manual.pdf