Extech RH390 Precision Psychrometer (Humidity & Temperature Meter)

Extech's RH390 is a precision psychrometer made for testing ambient air conditions.

This meter has three different modes - it can test humidity/temperature, humidity/dew point or humidity/wet bulb. Both parameters (depending on the mode selected) are displayed on screen at the same time for accurate, reliable measurements of current conditions.

The RH390 has a built-in humidity/temperature sensor on a slightly elongated probe for easier reaching of a specific targeted area. Slim design with rubberised sides make the instrument comfortable to grip, while a large size, backlit LCD display and easy-access buttons make using the RH390 as simple as possible.

This humidity/temperature meter can test humidity levels from 0 to 100% RH and temperature from -30 to 100°C. It also calculates dewpoint across a range from -30 to 100°C and calculates wet bulb across a range from 0 to 80°C.

Additional features of this unit include a data hold function (freezes current value on the screen), MAX/MIN mode (calculates the highest/lowest readings over a period of time) and automatic power off to save battery life.

Extech RH390 Precision Humidity & Temperature Meter Key Features

• Test ambient air conditions - measures temperature and humidity plus calculates dew point and wet bulb
• Simultaneous display of humidity/temperature, humidity/dew point or humidity/wet bulb
• Humidity range from 0 to 100% RH
• Temperature range from -30 to 100°C
• Backlit display - easy to use even in poor lighting conditions
• Slim design with rubberised sides for better grip and one-handed operation
• Data hold function - temporarily freezes current display
• MIN/MAX mode - calculate the maximum/minimum values taken over a period of time
• Automatic power off function (can be disabled if needed)
• Low battery indicator

What's Included?

• Extech RH390 Precision Humidity and Temperature Meter
• Carrying Case
• 9V Battery