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TH-Calc Thermohygrometer 7425

SKU: 7425

This unit has been discontinued as of December 31, 2011. 


Product Details

The TH-Calc™ Thermohygrometer 7425 is a diagnostic instrument with advanced capabilities, such as data logging, review of statistics and downloading to a PC using LogDat2™ software (included.) Logs data with time and date stamp. This instrument stores 12,700+ samples and 100 test IDs. It reliably measures temperature and humidity metrics and directly calculates dew point, wet bulb temperature and % outside air. It includes an easy-to-read display showing parameters simultaneously.


  • Conducting thermal comfort studies and IAQ evaluations
  • Verifying building HVAC system performance
  • Troubleshooting heating and cooling systems
  • Monitoring air conditions for manufacturing processes

Included Items

  • Instrument
  • Hard carrying case
  • (4) AA alkaline batteries
  • LogDat2™ Downloading Software and USB cable
  • Operation and service manual
  • NIST calibration certificate

Download Software


Features & Benefits

  • Reliably measures temperature and humidity
  • Calculates wet bulb and dew point temperature - no psychrometric chart needed
  • Easy to read display shows 3 parameters simultaneously
  • Calculates % outside air
  • Logs data with time and date stamp
  • Stores 12,700+ samples and 100 test IDs