The majority of Signatrol's data loggers are battery powered and all have a battery life of at least 3 years. Once the stored information has been downloaded from the data logger, the memory is cleared and the data logger is ready to be re-used over and over again - well, until the battery runs out, which is usually a number of years. A graph can now be produced showing the measured signal over time - providing an accurate account of what the data logger measured - useful for proving a shipment got too hot in transit or that your office is too hot to work in!

The stored readings are then downloaded and saved on the computers hard disk. Once the data logger has been monitoring for the required time period, it is connected to the computer. Once this memory is full, the data logger can be programmed to stop taking new readings, and therefore not loose any readings or, overwrite the oldest reading. The data logger will have an internal memory where the readings are stored. The time period between readings is called the 'sample period' and can range from many readings per second to once per day. Using the computer, the data logger is programmed to 'wake up' at predetermined intervals, take a reading and go back to sleep. Some data loggers can be configured to accept a wide range of sensors. The data logger may have internal sensor(s) so it measures where it is located or it may have one or a number of channels where external sensors can be connected. All you need to do is put the sensor in the water and tell the data logger how often to take a reading and at the end of the experiment, you download the information to the computer and it will produce a graph for you. Well, a data logger would do this for you automatically. Remember when you were at school and you did experiments, measuring the temperature of boiling water, taking a reading every minute until it boiled. What is Validation? What Is A Data Logger?Ī data logger or datalogger is an electronic device that is used in conjunction with a computer to monitor or record various signals. Using Signatrol Data Loggers in a Grow Tent

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