EC data with arduiono

Hi all,
I just need several packages inclued one arduino set and one EC measurement sensor, thats why I need Arduino bc I need data with date and time frame. I need to collect EC data 4 or 5 times in a day so, I will be using in this with battery or solar on groundwater measuremets. I just found this one, just for the plan.
https://www.dfrobot.com/product-1782.html
ıf you have any idea please ehelp me, thanks for your advices
Asen
You can proceed with an Arduino Uno / Nano, an RTC module, and a MicroSD card module for data logging. For power supply, you can choose a Li-ion Battery and a solar Charging Module.

Use an efficient buck converter (DC-DC) to get 5V or 3.3V for the Arduino.
Avoid linear regulators if you're on battery/solar (too much energy loss).
