The RDXL4SD portable Thermometer and Data Logger from Omega has built-in analysis functions and can accept up to four thermocouples from types J, K, T, E, R and S or 2 Pt100 O 2-wire sensors. The loggers can sample, process and display measurements without being connected to a computer.

The devices include a real-time SD memory card data logger, built-in clock and calendar and real-time data recorder. Auto sampling time can be set from 1 to 3600 seconds and data can also be logged manually. The loggers save temperature data and time information, which can then be downloaded for analysis.