International Journal of Computer Technology and Electronics Engineering
Knowledge of temperature and relative humidity course during a certain time is needed in scientific, medical and industrial applications. For retrieval of this information from various devices such as manual readings, chart recorders or data loggers can be used. A data logger is an electronic device that combines analog and digital measurements with programming methodology to sense temperature, relative humidity and other parameters such as voltage and pulse. The data loggers take input from the thermocouple temperature and humidity and other sensors.