SCT013-000 Measure DC!

Hi Sirs/Mam, I’d like to ask for your help please if how can I measure DC using Clamp Sensor? Im using NODEMCU. Is it possible? If so, what’s the new circuit? Thanks.

A current transformer is still a transformer. No transformer works on d.c.

You need to use a Hall effect sensor. And you will need to modify your emonTx to accept the new sensor, as it is designed for current transformers only.