• Dual channel, compatible with K, J and T type Thermocouples
  • Resolution of 0.1°C
  • Stores 250,000 readings
  • Logging rates between 2 seconds and 1 hours
  • User programmable alarm thresholds



The Lascar EL-GFX-DTC Thermocouple Data Logger measures and stores up to 252,928 temperature readings from two J, K, or T-type thermocouple inputs at a resolution of 0.1ºC. Using the Windows control software users can quickly set up the data logger and view downloaded data by connecting the device to the PC’s USB port using the supplied cable.

The EL-GFX-DTC Thermocouple Data Logger features a high-contrast graphic LCD and three-input buttons which allows users to start, stop and restart the data logger using on-screen menus. This menu also provides real-time analysis of data either as a data summary (showing highest & lowest readings and alarm conditions) or as a graph that updates as new data is added. The Max and Min readings and also the Time and Date these are valid from, can be displayed on the LCD. The user can then reset the Max/Min shown on this screen of the LCD. Each time these maxima and minima are reset while logging, an “Event Marker” is created in the data. When the data has been downloaded to a PC these Events can be viewed on the graph (Mark Events), they also appear in the data file – associated with the corresponding log when the reset took place. For certain applications where procedures mandate that a regular physical check of the logger/stats have taken place – this can be useful as an audit/validation tool. Multiple data logging sessions can be stored on the device ready for upload to a PC at a later date.

The two replaceable ½AA batteries typically allow logging for up to one year.

Applications include Pharmaceutical refrigerator monitoring, transportation, food & drink, building & site monitoring and HVAC.


Specification Min. Typ. Max. Unit
Probe measurement range K-type -200 (+328) +1350 (+2462) °C (°F)
J-type -200 (+328) +1190 (+2174) °C (°F)
T-type -200 (+328) +390 (734) °C (°F)
Internal resolution 0.1 (0.1)* °C (°F)
Accuracy (overall error) ±0.5 (±0.9)** °C (°F)
Logging rate Every 1 second Every 12 hour Time
Operating temperature range* -10 (-14) +40 (+104) °C (°F)
2 x ½AA 3.6V Lithium Battery Life 1† Year

* Above 999.9°C/F display becomes 1°C. Internal resolution remains at 0.1°C/F.
** Quoted accuracy is for the data logger only when measuring within the specified operating temperature. Thermocouple error is not included and should also be taken into consideration.
*** Operating temperature applies to the data logger module only. Please consult the probe manufacturer for operating temperature of thermocouple.
† At 25°C and 10 minute logging rate with no alarm LEDs or sounder and minimal LCD use.


Set up and data download of our EasyLog data loggers is enabled by our EL-WIN-USB software. It is compatible with 32-bit and 64-bit versions of Windows XP, Vista, 7 & 8.

Download the latest version of the software below. Please note, the software is not compatible with Mac or Linux.