Event Data Loggers
Some data logger applications do not monitor a continuously changing variable, like temperature, pressure and flow. They only detect when something happened, how long it happened, or how many times it happened. This is the domain of the event data logger, where discrete (on/off) signals are monitored for changes in state in various ways, and those changes are logged along with the date and time of occurrence. For example, how many times did a press motor operate during an 8-hour shift, and what was its total on and off time? Another example is an electric or water meter with a pulsed output. An event logger with counting capability can be used to log total KW-H of energy or water volume consumed versus time of day.
Some event data loggers connect to only a limited range of signal types, like switch closures and 24 V discrete outputs. Others connect to these and a much wider range of signal sources, like directly across AC and DC mains without external conditioning equipment. Whatever your unique situation, event data loggers yield a detailed log of your process or sensor activity to provide insights that are difficult if not impossible to obtain any other way.
 EL-USB-5 |
EL-USB-5 Low-cost Event Data Logger
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 DI-160 |
DI-160 Advanced Event, State and Count Data Logger
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