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Time and Weather > Thermometers > Extech RH490-NIST Precision Hygro-Thermometer, Highest 2 percent RH accuracy with Grains Per Pound (GPP) Display, Certicate; Less than 30 second RH response time; Water vapor in GPP (g/kg); Dual backlit display; Slim design with rubberized sides for better grip and for one hand operation; Data Hold and Min/Max functions; Auto power off with disable and low battery indicator; Complete with carrying case and 9V battery; UPC: 793950444900 (EXTECHRH490-NIST EXTECH RH490-NIST HYDRO THERMOMETER)
Extech RH490-NIST Precision Hygro-Thermometer, Highest 2 percent RH accuracy with Grains Per Pound (GPP) Display, Certicate; Less than 30 second RH response time; Water vapor in GPP (g/kg); Dual backlit display; Slim design with rubberized sides for better grip and for one hand operation; Data Hold and Min/Max functions; Auto power off with disable and low battery indicator; Complete with carrying case and 9V battery; UPC: 793950444900 (EXTECHRH490-NIST EXTECH RH490-NIST HYDRO THERMOMETER)
Extech RH490-NIST Precision Hygro-Thermometer, Highest 2 percent RH accuracy with Grains Per Pound (GPP) Display, Certicate; Less than 30 second RH response time; Water vapor in GPP (g/kg); Dual backlit display; Slim design with rubberized sides for better grip and for one hand operation; Data Hold and Min/Max functions; Auto power off with disable and low battery indicator; Complete with carrying case and 9V battery; UPC: 793950444900 (EXTECHRH490-NIST EXTECH RH490-NIST HYDRO THERMOMETER)
SKU: RH490
Brand: Extech
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Extech RH490-NIST Precision Hygro-Thermometer, Highest 2 percent RH accuracy with Grains Per Pound (GPP) Display, Certicate; Less than 30 second RH response time; Water vapor in GPP (g/kg); Dual backlit display; Slim design with rubberized sides for better grip and for one hand operation; Data Hold and Min/Max functions; Auto power off with disable and low battery indicator; Complete with carrying case and 9V battery; UPC: 793950444900; Dimensions: 7.8 x 1.7 x 1.3 in.; Weight: 2 pounds

General Information

Manufacturer

Extech

Manufacturer Part Number

RH490-NIST

Product Name

Precision Hygro-Thermometer, Highest 2 percent RH accuracy with Grains Per Pound (GPP) Display, Certicate

UPC Code

793950444900

Features
  • Less than 30 second RH response time
  • Water vapor in GPP (g/kg)
  • Dual backlit display
  • Simultaneous display of:
    • Humidity or GPP (g/kg) plus Temperature
    • Humidity or GPP (g/kg) plus Dew Point
    • Humidity or GPP (g/kg) plus Wet Bulb
  • Slim design with rubberized sides for better grip and for one hand operation
  • Data Hold and Min/Max functions
  • Auto power off with disable and low battery indicator
  • Complete with carrying case and 9V battery

Specifications
Humidity 0 to 100 percent RH
Temperature (internal) -4 to 199 degrees fahrenheit
Basic Accuracy More or less 2 percent RH, More or less 1.8 degrees fahrenheit
Max. Resolution 0.1 percent RH, 0.1 degrees fahrenheit
Dewpoint -22 to 199 degrees fahrenheit
Wet Bulb 32 to 176 degrees fahrenheit
Absolute Humidity 0 to 1120GPP (0 to 160g/kg)
Dimensions 7.8 x 1.7 x 1.3 in.
Weight 2 pounds

M-20190510-1454-253-E
M-20220524-1454-200-L
M-20220707-1454-200-L

*This item is BRAND NEW - not refurbished. It comes with all manufacturer supplied accessories, and full manufacturer's USA warranty.
*** DISCLAIMERS: 1) Availability is not always guaranteed: Please call or email us to double-check stock before placing your order. We ship from our inventory and also drop-ship from hundreds of suppliers. We try very hard to show only available products but sometimes products sell out before we can update the product webpage.  2) Some information may have been supplied by 3rd Party Content Suppliers: We are not responsible for Data or Image errors.  3) We do not offer Installation, Training or Technical Support on this product.***

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