Temperature/Humidity/Dew Point USB Data Logger

Product Code: HDT-250

Measure and store up to 16,382 relative humidity and 16,382 temperature readings over 0 to 100%RH and a -35°C to +80°C (-31°F to +176°F) measurement ranges.

The HDT-250 data logger is supplied with a long-life replaceable lithium battery which can typically allow logging for 1 year (depending on logging rate, ambient temperature and use of alarm LEDs). Status is indicated by flashing red and green LEDs.

Easily configure the data logger by plugging it into a PC's USB port and running the free EasyLog USB software, available for download using the link below. Configuration options include: logger name, measurement unit (°C or °F), logging rate, high/low humidity and temperature alarm levels and start date/time. Logged data (relative humidity, temperature and dew point) can be downloaded via the software and then graphed, printed or exported to other applications.

The unit is protected against moisture to IP67 standard when the supplied protective cap is fitted.

Lascar Product Code: EL-USB-2

  • Features
  • Technical
  • Documents
  • Software
    • 0 to 100%RH measurement range
    • -35°C to +80°C (-31°F to + 176°F) range
    • Easy setup using free EasyLog USB PC software
    • Dew point indication via control software
    • Programmable alarm thresholds for %RH & Temperature
    • Status indication via red and green LEDs
    • Replaceable battery supplied
    • Link to free configuration software supplied
    • Environmental protection to IP67 (when cap fitted)
    • Separate wall clip
  • Technical Details
    Relative Humidity Measurement Range 0 to 100%RH
    Internal Resolution 0.5%RH Typical
    Accuracy (overall error)
    ±3.0%RH Typical, ±5.0%RH Max
    Repeatability (short term)
    ±0.1%RH Typical
    Long Term Stability 0.5%RH/year Typical
    Temperature Measurement Range
    -35°C to +80°C (-31°F to +176°F)
    Internal Resolution
    0.5°C (1°F) Typical
    Accuracy (overall error)
    ±0.5°C (±1°F) Typical, ±2°C (±4°F) Max
    ±0.1°C (±0.2°F) Typical
    Dew Point
    Accuracy (overall error)
    ±1.1°C (±2°F) Typical
    Unit of Measurement  °C, °F, %RH (°C also for dew point)
    Logging Rate 10s, 1m, 5m, 30m, 1hr, 6hr, 12hr
    Operating Temperature Range
    -35°C to +80°C (-31°F to +176°F)
    16,382 relative humidity; 16,382 temperature
    3.6V ½ AA lithium battery (replaceable)
    Dimensions 103mm (L) x 26.4mm (W) x 26.6mm (H)
  • Free EasyLog USB software

    Free EasyLog USB software

    The core of Lascar's USB data logging solution is the free software supplied with each USB data logger. Using a wizard format to guide the user through setup of the data logger and subsequent download of collected data, the software puts the 'easy' into EasyLog.

Note: supplied product colour may vary from image shown