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Sensor Type
Humidity
Temperature / Freeze
Tool Type
Temperature Measurement
Features
Audible Indicator
Battery Operated
LCD Display
Visual Indicator
Ease of Installation
Beginner (Installs < 10 minutes)
Brand
Extech Instruments
Other Ways to Shop
In Stock
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Measures Humidity, Wet Bulb, Dew Point and Air Temperature
Extech Instruments RH300 Hygro-Thermometer Psychrometer
Extech Instruments RH300 Hygro-Thermometer Psychrometer
Extech Instruments RH300 Hygro-Thermometer Psychrometer
Item# 90279
Price: $94.99
Qty:
Free shipping on orders $200 and up details
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Overview

  • Simultaneous display of %RH, Temperature and Dew point or Wet Bulb or Probe Temperature
  • Wet bulb measurements without slinging
  • Calculates T1-T2 differential (Air Temperature-External Probe Temperature) using optional probe
  • Unique sensor cap design twists to closed position for protection during storage
  • Switchable F/C temperature units with 0.1 degree resolution

Essential Info

Simultaneously displays relative humidity, air temperature and dew point or wet bulb. Compact meter is ideal for field applications. Unique sensor cap closes to protect to protect meter during storage. Advanced features include data hold, selectable auto power off and MAX/MIN/Average reading.


Important notes:
  • Smarthome does not offer technical support on this product, please contact the manufacturer directly for all product support.
  • Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
  Manufacturer contact information:
  Extech Instruments Corp
  Tel: (781) 890-7440 Ext 200

More Info

  • Simultaneous display of %RH, Temperature and Dew point or Wet Bulb or Probe Temperature
  • Wet bulb measurements without slinging
  • Calculates T1-T2 differential (Air Temperature minus External Probe Temperature) using optional probe (TP890) and T2-Dew Point
  • Unique sensor cap design twists to closed position for protection during storage
  • Switchable °F/°C temperature units with 0.1° resolution
  • Data Hold freezes current reading on display
  • Max/Min readings
  • Auto power off to save battery life
  • RH300 complete with 2 AAA batteries
  • Optional external temperature probe (TP890)

  • Specifications

  • Humidity: 10 to 90%RH
  • Temperature (internal): -4 to 122F (-20 to 50C)
  • Temperature (external): -4 to 158F (-20 to 70C)
  • Dew Point: -90.4 to 122F (-68.0 to 49.9C)
  • Wet Bulb: -6.9 to 122F (-21.6 to 49.9C)
  • Dimensions: 7 x 1.9 x 1in (178.5 x 48.4 x 24.7mm)
  • Weight: 3.3oz (95g)
  • Reviews

    1 Ratings
    5 star: 100%  (1)
    4 star: 0%  (0)
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    Average Customer Rating
    (1 customer ratings)
    Share your thoughts with other customers
    JENNIFER -- gulfport, MS   5/29/2011
    Very fast read, almost instant. Accuracy seems good. Item as described, best choice for this need.

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