1. Products
  2. Test & Measurement
  3. Temperature & Humidity
  4. Humidity Meters
  5. Extech RH390
Cart

Added to cart

product image

Model:

-
+
Go to cart
Continue shopping

Your order qualifies for free 2-day shipping and easy returns

Shipping & Returns Policy
Recommended for you

Precision Psychrometer

Extech RH390

Model: RH390 Go to Product Support
product image

Measure humidity and temperature simultaneously with the RH390 Precision Psychrometer from Extech. A dual-illuminated readout can be alternated to display wet bulb and humidity, or dew point and humidity, or temperature and humidity. This handheld device registers temperatures from -22 degrees to 199 degrees F (-30 degrees to 100 degrees C) and measures the full spectrum of relative humidity with ±2% accuracy between 20 and 90% RH. Complete with carrying case and 9V battery.

$215.99

Available for purchase on credit terms. Learn More

Buy Now
Product Shipping FREE Shipping
Product Returns Shipping & Returns
Sales Contact Contact Sales
Contact Sales

Want more information on this product?

Call +1 (866) 477-3687 to speak with a knowledgeable specialist.

Specifications
General Specifications
Dew Point
-22 to 199 °F (-30 to 100 °C)
Dew Point Max Resolution
0.1°
Relative Humidity
0 to 100%
Relative Humidity Basic Accuracy
±2%
Relative Humidity Max Resolution
0.1%
Temperature (Air)
-22 to 199 °F (-30 to 100 °C)
Temperature (Air) Basic Accuracy
±1.8 °F/1 °C
Temperature (Air) Max Resolution
0.1 °F/ °C
Wet Bulb
32 to 176 °F (0 to 80 °C)
Wet Bulb Max Resolution
0.1°
Additional Details
Certifications
CE
Dimensions
7.8 × 1.7 × 1.3" (200 × 45 × 33mm)
Power
1 × 9V battery
Warranty
2 years
Weight
7oz (200g)
Related Documents
Export Restrictions

Export Restrictions

The information contained in this page pertains to products that may be subject to the International Traffic in Arms Regulations (ITAR) (22 C.F.R. Sections 120-130) or the Export Administration Regulations (EAR) (15 C.F.R. Sections 730-774) depending upon specifications for the final product; jurisdiction and classification will be provided upon request.

Extech RH390 - Model: RH390

Change Selection

$215.99

Buy Now

Returns and Shipping Information for Orders Placed on FLIR Websites

Free Shipping

Orders placed through FLIR.com will ship via free 2-day expedited service to the contiguous 48 states.

Returns

We offer a 30-day return policy on all products, no questions asked. Your order confirmation will contain instructions on how to contact our Customer Care team to initiate the return.

shipping time cut-offs

Orders placed Monday-Friday before 12:00 PM (noon) EST will likely ship the same day. All other orders will ship the next business day.

Want more information on this product?

Call +1 (866) 477-3687 to speak with a knowledgeable specialist.

Can I purchase from flir.com and be invoiced on Net30 terms?

Yes! FLIR Systems has partnered with Apruve to help manage our invoicing and credit program. Once you fill your cart, look for the Apruve button at checkout to complete your purchase on Net30 terms.

Who is eligible for the program?

Any business entity or non-profit that is greater than two years old. Younger companies don't often have enough credit history to make an underwriting decision. NOTE: Sole Proprietorships are not currently eligible for the program.

How do we get started?

To get your corporate account set up, you'll need to go through a short online application process. Just click "Apply Now" below. It should take no more than 5 minutes to complete.

Read all FAQs

Apply Now