Extech RH300 Digital Psychrometer

The Extech Digital Psychrometer calculates T1-T2 differential (air temperature minus external probe temperature).

Features

  • Wet bulb measurements without slinging
  • Switchable °F/°C temperature units with 0.1° resolution
  • Data hold freezes current reading on display
Your Price $109.99
Usually ships in 1-2 weeks
Extech
Government and Educational PricingGovernment and Educational Pricing
Free Lifetime Tech SupportFree Lifetime Tech Support
ImagePart#Product DescriptionPriceStockOrder
Extech RH300 Digital PsychrometerRH300 Digital Psychrometer
$109.99
Usually ships in 1-2 weeks
Extech RH300-NIST Digital Psychrometer, NIST traceable
$243.09
Usually ships in 1-2 weeks
Extech RH300 Digital Psychrometer
RH300
Digital Psychrometer
Usually ships in 1-2 weeks
$109.99
Extech
RH300-NIST
Digital Psychrometer, NIST traceable
Usually ships in 1-2 weeks
$243.09
ImagePart#Product DescriptionPriceStockOrder
Extech RH300-CAL Calibration Kit RH300-CAL Calibration kit for 445715 & 445815
$68.19
Usually ships in 1-2 weeks
Extech RH300 Thermistor Probe TP890 Thermistor probe for RH300
$15.99
Usually ships in 1-2 weeks
Extech RH300-CAL Calibration Kit
RH300-CAL
Calibration kit for 445715 & 445815
Usually ships in 1-2 weeks
$68.19
Extech RH300 Thermistor Probe
TP890
Thermistor probe for RH300
Usually ships in 1-2 weeks
$15.99

The Extech Digital Psychrometer simultaneously displays % relative humidity, temperature, dew point, or wet bulb or probe temperature. The wet bulb measurements are made without slinging. The meter calculates T1-T2 differential (air temperature minus external probe temperature) using optional probe and T2-dew point. The unique sensor cap design twists to the closed position for protection during storage. Additional meter features include switchable °F/°C temperature, data hold, max/min readings, and automatic power off.

  • Humidity range: 10 to 90%RH
  • Humidity maximum resolution: 0.1%RH
  • Humidity basic accuracy: ±3%RH
  • Temperature (internal) range: -4 to 122°F (-20 to 50°C)
  • Temperature (internal) maximum resolution: 0.1°
  • Temperature (internal) basic accuracy: ±1°F or ±0.6°C
  • Temperature (external) range: -4 to 158°F (-20 to 70°C)
  • Temperature (external) maximum resolution: 0.1°
  • Temperature (external) basic accuracy: ±1°F or ±0.6°C
  • Dew point range: -90.4 to 122°F (-68.0 to 49.9°C)
  • Wet bulb range: -6.9 to 122°F (-21.6 to 49.9°C)
  • Dimensions: 7 x 1.9 x 1" (178.5 x 48.4 x 24.7mm)
  • Weight: 3.3oz (95g)
  • (1) Digital Psychrometer
  • (2) AAA batteries
Questions & Answers
No Questions
Please, mind that only logged in users can submit questions

In The News

Restoration, Testing, Research and Education

A few years after Ohio became a state in 1803, George Harner arrived in Greene County with a land deed signed by then-President Thomas Jefferson and Secretary of State James Madison. The homestead was largely old forest and wetlands and also included a fen-fed stream—the Beaver Creek. As was the case with much of the Ohio Territory, the forests eventually gave way to land clearing and grain farming. Harner’s descendants, including his son John and John’s wife, Sarah Koogler, continued to work the rich soil for many years to follow. Much of the original property and surrounding land has fallen prey to urban sprawl.

Read More

Storms Cause Extended, Elevated Contaminant Concentrations in Urban Streams

Each fall in Puget Sound, coho salmon leave the salt water and swim up freshwater streams. They head upstream to spawn: lay their eggs and die. Death is always the end of this journey for coho salmon, but in streams now running through urban areas, stormwater runoff kills them before they can spawn. This phenomenon, called Urban Runoff Mortality Syndrome, can kill up to 70-90% of coho salmon in an affected area. “‘Woah’ is a pretty common response,” said Kathy Peter, a research scientist formerly at University of Washington Tacoma and the Center for Urban Waters. This phenomenon adds pressure to the Puget Sound population, already considered a species of concern by the United States Fish and Wildlife Service under the Endangered Species Act.

Read More

A Nationwide View shows “Evolution” of Water Quality Concerns

Water quality issues are shifting in the United States’ rivers in big ways. Those changes are driven, in part, by the way the land in a watershed is used and they’re big enough that researchers may need to change the way they think about water quality in the American rivers. “What was striking to us was how perceptions of water quality issues from several decades ago may need to be updated,” said Edward Stets, a U S Geological Survey research ecologist, in an email response to questions from Environmental Monitor. New research by Stets published in Environmental Science & Technology in March highlights these shifting water quality issues.

Read More