DC current hall effect sensors in CT form factor

[ali_asadzadeh]

I'm working on a new  PV String Level Monitoring Device, Do you know or guess the Type of sensors they have used? See the attached picture and catalogue, do you know or recognize some Chinese manufacturer of the sensors?

[TizianoHV]

By searching "50A pcb hall" in google images i found:
"SCK19D " -> https://www.directindustry.de/prod/shenzhen-socan-technologies-co-ltd/product-132598-1607978.html.


On aliexpress, same research, i found:
"QNHC3" -> https://it.aliexpress.com/item/1005007046909862.html
"HCS-LSP 50A" -> https://it.aliexpress.com/item/4000048955032.html

[ali_asadzadeh]

Thanks for the findings Could you find datasheets for them too?, I think we should have something way cheaper, Because i asked the manufacture the price and they told me it's around 48$ for 24 input model,
See some internal pictures

[ali_asadzadeh]

Some more pictures
Any Idea what the core materials would be? or if we could find something very cheap like these ones

[ali_asadzadeh]

A closer look at the chip? what do you guess?

[ajb]

That's a common package for hall effect sensors, unless someone recognizes the marking it will be hard to say more than that from the picture.  Clearly it needs to be an analog output for measuring current, possibly bipolar if you need to measure current in both directions.  From there you will need to do some design work based on the geometry and current range you need.  I imagine calibration could be challenging, depending on how consistent and stable the individual sensors are and how accurate you need the measurements to be.

[ali_asadzadeh]

The real question is if we can find a Chinese manufacturer that could build these or similar single CT shape lied sensors for real cheap.