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Extech RH520A Temp & RH Chart Recorder
Extech RH520A Temp & RH Chart Recorder
Extech RH520A Temp & RH Chart Recorder
Price: $299.99

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Availability: Subject to availability
Product Code: RH520A


Extech RH520A Temp & RH Chart Recorder

The Extech RH520A Humidity and Temperature Chart Recorder simultaneously measures humidity and air temperature data. These parameters are automatically displayed graphically and numerically on the LCD screen. LabVIEW-based software is included, which will calculate dew point temperature, wet bulb temperature and grains per pound (GPP) based off the air temperature and relative humidity data recorded. Internal memory stores up to 49,000 data points which can be analyzed further when downloaded to a computer using the included RS-232 cable. The measuring probe is replaceable, requires no calibration, and detaches up to 1 meter (3.28 ft) for increased measurement flexibility. The affordable, easy-to-read RH520A Temp & RH Chart Recorder can be mounted on a desk with its built-in stand or mounted on a wall.

  • Measures and displays relative humidity and air temperature
  • LabVIEW™-based software calculates and graphs dew point, wet bulb, and GPP (grains per pound)
  • LCD also displays date, time, and percentage of memory remaining
  • Internal memory records up to 49,000 data points and can be transferred to a PC via RS-232 serial port for further data analysis
  • Replaceable probe does not require recalibration
  • Detachable probe extends up to 1 meter for measurements in closed environments
  • Audible and visual alarm with High and Low setpoints
  • Output socket used with optional external alarm module
  • Can be mounted on desk or wall


  • Extech RH520A Temp & RH Chart Recorder
  • Built-in stand
  • Detachable probe with 3 ft (1 m) cable
  • RS232 cable
  • RS-232 To USB Adapter
  • LabView-based PC software
  • 100-240 VAC 50/60 Hz Adapter
  • Three AA batteries

Warranty Information

The Extech RH520A Temp & RH Chart Recorder carries a 1-year warranty.

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