1. Home
  2. Test Instruments & Gauges
  3. Temperature & Humidity Measuring
  4. RH Meters & Thermohygrometers
  5. HygroThermometer, Onboard, NIST

This item is Discontinued.

Extech HygroThermometer, Onboard, NIST RH490-NIST

HygroThermometer, Onboard, NIST (Discontinued)

  • Mfr # RH490-NIST
  • Zoro # G8348697
Get a 10% off coupon
Free 30-day returns
Return Policy
Get 30 days to pay with Net 30
Apply Now
Unlock tax-exempt savings
Add Tax Exemption

Specifications

Product Information

MFR #
RH490-NIST
Zoro #
G8348697
UPC #
793950443910
Country of Origin
China

Dimensions

Manufacturers Warranty Length
1 yr
Overall Height
7.8 in
Overall Width
1.7 in
Manufacturer Warranty Length
2 yr
Overall Depth
1.3 in

Details

Item
Hygro Thermometer
Application
Field Applications, HVAC/R
Humidity Accuracy
+/-2%
Includes
Carrying Case, Instructions
Battery Type
9V
Temp. Range (F)
-22 Degrees to 199 Degrees F
Special Features
Displays Grains of Water Per Pound
Data Hold
Yes
Relative Humidity Range
0 to 100%
Temp. Resolution (C)
0.1 Degrees C
Dew Point Range
-22 Degrees to 199 Degrees F
Humidity Probe Range (Deg. C)
0 Degrees to 50 Degrees C
Temp. Range (C)
-20 Degrees to 60 Degrees C
Memory
Min/Max
Display
Dual LCD
Auto Power Off
Yes
Humidity Resolution
0.1 %
Temp. Accuracy (C)
+/-2 Degrees C
Wet Bulb Temperature Range
32 Degrees to 176 Degrees F
Temp. Accuracy (F)
+/-1.8 Degrees F
Response Time
30 sec
Temp. Resolution (F)
0.1 Degrees F
Calibration Certificate
NIST
Humidity Probe Range (Deg. F)
32 Degrees to 122 Degrees F
Data Logging
No
Sensor Type
Relative Humidity Sensor, Temperature
Wet Bulb Globe Temperature Range
32 Degrees to 176 Degrees F/0 Degrees to 80 Degrees C
Ambient Temperature Range
-22 Degrees to 199 Degrees F/-30 Degrees to 100 Degrees C
IP/NEMA Rating
Not Rated
Display Screen Type
Backlit LCD
Standards
CE Certified
Includes Batteries
Batteries Included
Battery Run Time
24 hr
Low Battery Indicator
Yes
Ambient Temperature Accuracy
+/-1.8 Degrees F
Min/Max Memory
Yes
Weight
7 oz
Backlit Screen
Yes
Auto Shut-Off
Yes
Includes NIST-Traceable Calibration Certificate
NIST-Traceable Calibration Certificate Included
Meter Type
Dew Point and Wet Bulb Humidity Meters with Onboard Main Probe
Temperature Resolution
0.1 Degrees
Operating Temperature Range
0 Degrees to 50 Degrees C, 32 Degrees to 122 Degrees F
Includes Case
Case Included
Properties Measured
Absolute Humidity, Ambient Temperature, Contact Temperature, Dew Point, Non-Contact Temperature, Relative Humidity, Water Vapor Level, Wet Bulb Temperature
Humidity Range
0 to 1,120 GPP/0 to 160 g/kg (Absolute), 0% to 100% (RH)
Probe Design
Onboard
Humidity Measurement - Minimum
0 %
Humidity Measurement - Maximum
100 %
Dew Point Temperature Measurement - Maximum
199 Degrees F
Includes Data Hold
Data Hold
Wet Bulb Temperature Measurement - Maximum
176 Degrees F
Includes Low Battery Indicator
Low Battery Indicator
Ambient Temperature Measurement - Maximum
199 Degrees F
Wet Bulb Temperature Measurement - Minimum
32 Degrees F
Product Type
Dew Point and Wet Bulb Humidity Meters
Dew Point Temperature Measurement - Minimum
-22 Degrees F
Ambient Temperature Measurement - Minimum
-22 Degrees F

Description

Hygro Thermometer, 0 to 100 Percent Relative Humidity Range, +/-2 Percent Humidity Accuracy, -22 Degrees to 199 Degrees F Temp. Range (F), +/-1.8 Degrees F Temp. Accuracy (F), 32 Degrees to 176 Degrees F Wet Bulb Temperature Range, -22 Degrees to 199 Degrees F Dew Point Range, 0.1 Percent Humidity Resolution, Sensor Type Relative Humidity Sensor, Temperature, Display Dual LCD, Memory Min/Max, Battery Type 9V, Auto Power Off Yes, Data Hold Yes, Response Time 30 sec

Ratings & Reviews

3 Reasons You Can Count On Us

  • Supplies for every job.

    Supplies for every job.

    10 million items and the exact one you need.

  • When you need it fast, count on Zoro!

    When you need it fast, count on Zoro!

    2 million products ship in 1 day.

  • Stretch your budget further.

    Stretch your budget further.

    Everyday low prices on the brands you love.