In the process industries, where n number of parameters are needed to be monitored and recorded for various reasons, our manufactured single data logger, microprocessor based data logger is most ideal to function with precision. Using single data logger It is possible to monitor and log the temperature or process values at maximum 16 different locations. One or more data loggers can be combined for more than 16 channels. The measured analog values are also stored in the internal non-volatile memory along with the real time and date. The stored data can be down loaded to the dot matrix printer using the built in parallel port and on to the computer using the built in serial port on RS485 link. Supporting window based data acquisition software allows user to monitor the on-line or off-line data in graphical or tabular form on the computer screen. The high and low alarm levels are also programmable for each channel.