The meters themselves do not do much data logging. If you want to log usage data then we will recommend running our Dash software on your computer, as the software logs the meter data for you that way.
If you are using the EKM Push3 to get the data to the internet, it will log once a minute reads in the cloud. You can access the last 1,000 reads at any time in your online Push Account Portal.
Additionally, the Push3 does have the ability to store data locally on the gateway's Micro SD card, in the event that the internet connection goes down or it is unavailable at your location. Once the connection the the internet is re-established the Push3 will upload the missing data from the time of the internet outage. This support article explains how to get the data off of the SD card.
Our EKM Push Summary system stores additional summarized Push3 data in a way that can accessed long term. The Comparison Chart in the Dash software uses this system to display historical data: https://forum.ekmmetering.com/viewtopic.php?f=4&t=3434
You can also try our API Builder tool to se how to call data from from this system using the Summary API: https://summary.ekmpush.com/api-builder
The meters themselves store the running cumulative kWh readings as well. The v.4 meters also keep a running total of pulse counts. Real time data such as Watts, Volts, Amps, and Power Factor are not stored in the meters.
The Omnimeters also keep the last 6 end-of-month total kWh reads, so you can see what the total kWh read was at the end of the last 6 months if you poll that info from the Dash software, if you are connected directly to the meter (not via the Push, but via the USB converter). Get to this information in the Dash software via Meters > Edit Meter > Data Tab. Be sure that the internal clock on your meter is properly set to local time if you want to use this option
Alternatively, you may be able to source a data logger that can read and timestamp the basic pulse output from the meter (it pulses 800 times per kWh).