Lascar usb thermocouple data logger lascar el usb tc cal t this data logger has been designed to interface with either a j k or t type thermocouple which is simply connected to the dedicated socket at the base of the unit the unit is easily set up by plugging into a pc via the usb port where parameters such as mode logging rate start time and any downloads may be done the instrument will record over 32 000 readings at a rate of between 1 second and 12 hours and when downloaded data