Extech RHT510 Hygro-Thermometer Psychrometer

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The Extech RHT510 Hygro-Thermometer Psychrometer can conveniently check the Humidity and Temperature conditions in residential and professional settings to ensure comfort and safety.

The RHT510 is a Hygro-Thermometer Psychrometer that measures Relative Humidity, Temperature, Dew Point, and Wet Bulb. General purpose bead wire Type K probe is included for measuring Temperature up to ~250°C, while the meter can measure to 1300°C if used with other probes. Min/Max function stores and recalls highest and lowest readings.

Additional features include: large LCD display with backlight, Data Hold and Auto power off with disable option.

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pdf_sml    Extech RHT510 Datasheet

pdf_sml    Extech RHT510 User Manual

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Extech RHT510 Hygro-Thermometer Psychrometer

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It is important to measure & control moisture and relative humidity in occupied spaces. The presence of moisture and dirt can cause molds and other biological contaminants to thrive. Relative humidity levels that are too high can contribute to the growth and spread of unhealthy biological pollutants. Humidity levels that are too low, however, may contribute to irritated mucous membranes, dry eyes and sinus discomfort.

Temperature/Humidity Ranges for Comfort

Conditions Relative humidity Acceptable Operating 
Summer (Light clothing) If 30% then
If 60% then
24.5 – 28 °C
23 – 25.5 °C
Winter (Warm clothing) If 30% then
If 60% then
20.5 – 25.5 °C
20 – 24 °C

Extech RHT510 Hygro-Thermometer Psychrometer Features:

  • Measures Temperature (Air/Type K), Relative Humidity, Wet Bulb, and Dew Point
  • Backlit LCD to view in dimly lit areas
  • Data Hold and Min/Max functions
  • Auto power off with disable
  • Tripod mount (optional TR100 Tripod sold separately)
  • Complete with wrist strap, general purpose Type K bead wire Temperature probe, and 3 AAA batteries

Extech RHT510 Hygro-Thermometer Psychrometer Specifications:

Specifications Range Max Resolution Basic Accuracy
Temperature (Air) 0 to 50°C 0.1° ±1.2°C
Temperature (Type K) -100°C to 1300°C 0.1° ±0.4% + 1°C
Relative Humidity 10 to 95%RH 0.1%RH ±4%RH
Wet Bulb -5.4 to 49.0°C 0.1° calculated
Dew Point -25.3 to 49.0°C 0.1° calculated
Dimensions 153 x 58 x 25mm
Weight 160g