A data logger is basically any device that is used for the storage of data. Many are stand alone units that can be used in conjunction with the features of other test equipment like sensors or a humidity sensor as part of a Calibration service. The device stores the information from the external units that read in info and then a user can read that info from the logger or download it directly to a network or computer.
Because the logger unit works on its own, it offers many advantages. They are cheaper than larger computers and perform only one purpose, while being able to connect to any other sensor type equipment. This makes it ideal for leaving it in an off site location for the purpose of collecting data for analysis at a later date.
There are a number of different features that should be considered when deciding upon which logger unit to acquire. First, keep in mind what the unit will be used for, in other words, what is the purpose of the logger? This will determine how many inputs that you will need.
The amount of inputs will also determine the price of the unit that you will need to purchase. Also, consider the amount of storage that will be needed. Will this be a long term project that requires a year more amounts of information or will this be used for short run tests that do not require a large amount of storage?
How many tests will be run per hour is also another concern when deciding which logging unit to get. If you need it to store a number of tests, say, over 3000 an hour, then you will need one with a larger amount of memory. This will also raise the price of the item that one will need.
Regardless of the purpose, you should purchase one that is flexible and can store a lot of test info. When will you need to access the info? Because the unit does not have to be connected to a computer, it makes it highly functional for portability. However, if you need constant access to the information from a remote location, then you will need to have it attached to a laptop or computer with network or internet capability.
There are a number of factors to consider before making your purchase. If you find that you have purchased one that will not serve your needs, you can either have it upgraded or return it and select a higher grade model. The ability to return the unit may differ from vendor to vendor. Make sure to contact your vendor to determine the eligibility for return.
A data logger is an invaluable piece of equipment in testing. With so many units available, it is important to know which one will best suit your specific needs. Make sure to get one that performs all of the data storage functions that will be required. Also make sure that your testing equipment is totally compatible with the info storage unit that you select to serve your purposes.