Calibratable Precision Data Logging Digital Psychrometer


Calibratable Precision Data Logging Digital Psychrometer

The #DTH184DL Calibratable Precision Data Logging Digital Psychrometer is ideal for process control, labs and other critical areas.


Best For:



  • Measures and displays ambient temperature, relative humidity (RH), and dew point and wet bulb temperatures on a backlit dual-readout LCD
  • Includes data logging software and a USB cable
  • 1% accuracy over most of the humidity range
  • Min/Max memory + data hold
  • Adjustable Hi and Lo temperature and RH alarms
  • °F/°C switch
  • 33% and 75% #HR33 and HR75 reference salts are available to calibrate RH measurement in the field
  • Adjustable auto power off trigger (can be disabled for data logging and calibration)
  • Specifications


    • Temperature measurement range/resolution: -4° to 140°F (-20° to 60°C)/0.1°
    • Temperature measurement accuracy: ±1.8°F (±1°C) from 32° to 104°F (0° to 40°C); ±3.6°F (±2°C) elsewhere in range
    • RH measurement range/resolution: 5 to 95%/0.1%RH
    • RH measurement accuracy: ±1% of reading from 15 to 80% RH; ±2.5% elsewhere in range
    • Data logging capacity: 30,000 pairs of temperature and RH readings
    • Sampling time: Once per second
    • Auto power off trigger: Adjustable from 1 to 99 minutes of front-panel inactivity, with a factory default of 20 minutes
    • Operating temperature: -4° to 140°F (-20° to 60°C)@<95% RH
    • Weight: 8.8 oz. (250g)
    • Power source: "9V" battery (included)


    • External temperature-humidity probe
    • PC data logging/interface software on CD
    • USB cable
    • Battery
    • 1-year limited warranty


    • 5.1 x 2.2 x 1.5 in. (130 x 56 x 38mm)