Customers around the world ask us the same question: What data logger is right for me? We get it - there are a lot of choices out there. Sometimes its nice to have a little unbiased direction to get you started down the selection path. That's why we asked our most experienced service technicians to share their top six tips to selecting the best Data Logger for your application. To find out what they said, just read below and download the pdf below.
Step 1 - Parameters
What do you want to measure?
Once the parameters you want to measure are defined, then the appropriate sensors available can be selected. Sensors output their signal in a variety of different outputs and not all data loggers can read the output of all sensors. Typical sensor outputs will include: analog, digital, and frequency. Analog sensors provide a voltage or amperage signal that is directly related to the parameter being measured. For example, an analog submersible pressure transducer used to measure water level may output its signal in a 4-20 or 0-20 mA, 0-1, 0-5, or a 0-10 mV range. A digital signal may be a RS232 serial string. It may also output data in specific communication protocol like SDI-12, MODBUS, or DNP3. Select the data logger that can read the signal of the sensor you have selected.
It is also important to know the number of sensors desired. The data logger you select needs to provide enough ports or channels to read all the sensors you need. Some data loggers have the ability to add additional channels, while others are fixed. Take into consideration any future growth of the number of parameters that may be needed.