SDI-12 protocol allows some instruments to be connected to a variety of data loggers. MODBUS and Canbus are some other protocols being used in today’s data loggers. Some data loggers use a flexible scripting environment to adapt themselves to various non-standard protocols.
What to look ahead to
IS 13252 is focused on the safety of IT and electronic equipment, whereas other standards like IS 616 focus on the safety requirements for mains-operated electronic and related apparatus for household and similar general use. However, test equipment used here are similar throughout the spectrum of standards. The type of equipment, however, is moving towards automation. Data loggers provide options like deploy-and-forget, where you have the option of going through measured data at your own pace.
With connectivity being the focus in equipment development, the original model of a standalone data logger is changing to one of a device that collects data but also has access to wireless communications. We are moving away from proprietary products with commercial software to open source software and hardware devices.
In future, specialised high-speed digital data loggers could replace traditional instruments such as oscilloscopes and logic analysers. But we are still miles away from it!