Extech RH390 Precision Psychrometer
| Shop All Extech Products| Click Here to Learn How to Use This Desk Builder
Selected But Not Shown
The Extech Precision Psychrometer RH390 has a high 2% RH accuracy, a fast response time, less than 30 seconds, and a dual backlit display.
The RH390 can simultaneously display humidity and temperature, humidity and dew point, or humidity and wet bulb measurements.
- Offers a dual backlit display
- Made with a slim design complete with rubberized sides for better grip and for one hand use
- Includes Data Hold and Min/Max functions
- Auto-powers off with disable feature
- Alerts user with low battery indicator
- Has a simultaneous display of humidity/temperature, humidity/dew point or humidity/wet bulb
|Humidity||0 to 100%RH|
|Internal Temperature||-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" H x 1.7" W x 1.3" D|
|Weight||7 oz (200g)|
The Extech RH390 Precision Psychrometer is available with standard factory calibration or with NIST Calibration Certification (adds 5 days to product lead time). NIST certification offers a traceable certificate that satisfies ISO & other regulatory requirements for product accuracy traceability to nationally recognized reference standards.
Please see our warranty page for more information regarding the warranty on this item.
- Return windows close 30 days after you receive your item.
- You are responsible for obtaining a Return Merchandise Authorization, the cost of shipping, and potential restocking fees, if the item has been opened.
- To start a return, or to view the full returns policy, click here.
Are you sure you're finished customizing this product?
In many cases, we can offer bulk quantity discounts for purchases or smaller orders made over an extended period of time. Bulk deals are based on anticipated volume and the products you've selected. We can also provide you with brochures and swatches to assist in your purchasing decisions.
Swatch Request Form
Please allow 1-3 weeks for delivery.