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external meter with Deye instead of CT


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whatever Deye cloud ( and home assistant using deye data) calculates is is off by like 2kwh a day. (pea meter spinning disc meter showing more consumption)
i wonder if its worth to add meter like chnt ddsu666 (seen on aliexpress for like 15$)
- would it calibrate deye calculations? also i dont want to look outside at the meter every couple of days , neighbor looking at me funny 

* i already tried to change CT ratio settings  to calibrate it up and down and still error is the same,

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The Deye CTs are horribly inaccurate.

 

You can improve that accuracy by using an external meter, but there are only a few that work with the Deye (check your manual), doing this certainly improves the zero-export accuracy. This meter (not cheap) definitely works with the Deye 

https://www.lazada.co.th/products/i4470648921-s18041805611.html?

 

We also have a number of Hiking DS238-2 energy meters monitoring various stuff. These have RS-485 for remote reading, sadly they don't talk to the inverters.

 

In reality, the only meter that actually matters is the PEA one, the others are purely an estimate unless they are calibrated and certified.

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2 hours ago, mateusz1945 said:

whatever Deye cloud ( and home assistant using deye data) calculates is is off by like 2kwh a day. (pea meter spinning disc meter showing more consumption)
i wonder if its worth to add meter like chnt ddsu666 (seen on aliexpress for like 15$)
- would it calibrate deye calculations? also i dont want to look outside at the meter every couple of days , neighbor looking at me funny 

* i already tried to change CT ratio settings  to calibrate it up and down and still error is the same,

 

I am quite happy with my Zemismart sensor, it seems pretty accurate as far as I can tell, but I don't have a PEA meter to compare it with.

 

I have started a discussion about smart home kit:

 

 

 

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