Profile: Datapaq Ltd. manufactures temperature profiling and analysis systems for use in industrial heat treating processes. The Tpaq21 data logger records 130,000 data readings over 10 selectable channels. It is combined with a built-in transmitter to see these processes in real time, this is an ideal data logger for all applications. The Q18 data logger has been designed using miniaturised electronic packaging technology, enabling us to combine speed of readings.