Lascar EL-USB-RT

  • Real-time display and recording of temperature on PC
  • -20 to +70°C (-4 to +158°F) Measurement range
  • 0 to 100%RH Measurement range
  • Dew point indication via Windows Control Software
  • USB Interface
  • Programmable sample rate and alarm limits



The Lascar EL-USB-RT USB Real-Time Temperature Data Logger is a USB real-time temperature data logger with a measurement range -20 to +70°C. When plugged into the USB port of a PC installed with the purpose designed software under Windows 2000, XP & Vista (32 bit only), the Lascar EL-USB-RT measures temperature and relative humidity from -20 to +70°C (-4 to +158°F) and 0 to 100%RH. The PC displays the temperature, humidity and dew point (the temperature at which water vapor present in the air begins to condense) in real-time and saves it to a file which can store up to 7 day’s worth of data. This data file is overwritten at the beginning of each new logging session. The software provides the option for the user to save the data file permanently to the hard-drive. Temperature, relative humidity and dew point can be graphed, printed and exported to other applications.


Specifications Minimum Typical Maximum Unit
Relative Humidity Measurement range 0 100 %RH
Repeatability (short term) ±0.5 %RH
Accuracy (overall error)(20-80%RH) ±4.5 %RH
Response Time 5 sec
Long term stability 1 %RH/yr
Temperature Measurement range -20(-4) +70(+158) °C(°F)
Repeatability ±0.3(±0.6) °C(°F)
Accuracy (overall error) ±1.5(±3)** °C(°F)
Response Time 20 30 sec
Dew Point Accuracy (overall error)(25°C, 40-100%RH) ±2.5(+5) °C(°F)
Logging rate 1 sec
Operating temperature range -20(-4) +70(+158) °C(°F)

* Range to -40 to +90°C (-40 to +194°F) for occasional use
** Stated accuracy correct following 15 minutes temperature stabilization in environment