ExChart RH520 3.0 that could have been downloaded from our website for free. ExChart RH520 is included in Education Tools. The following versions: 3.0 and 1.0 were the most frequently downloaded ones by the program users. ExChart RH520 works fine with 32-bit versions of Windows XP/7/8/10/11. The actual developer of the free software is Extech Instruments. ExChart RH520.exe and ExChartRH520.exe are the most frequent filenames for this program's installer.
From the developer:
Simultaneous numerical and graphical display of Humidity and Temperature readings, plus Time and DateMeasures Humidity (10 to 95%RH) and Temperature (-20.0°F to 140.0°F) plus calculates Dew Point.Basic accuracy 3%RH, 1.8°F/1°C. Large dual graphical LCD displays with adjustable vertical and horizontal TAC resolution. 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.
You may want to check out more software, such as Wintree, f x -Viewer or Trachtenberg Speed Math, which might be similar to ExChart RH520.