Details for M30 board

[nickdd]

Hi,

Would also be interested in new M30 board.

But looking for some details:

- What type of CT clamps are needed?  The M16v2 works with SCT013 with 3.5 mm jack, but what type is needed here ?

- Can you post details about the accuracy and especially if it can do stable readings of low power usage values like only a couple of watts. I would like to measure the real power usage of some electronic devices.

- Does M30 measure active power, so taking into account the power factor / cos phi ?

Regards,
Nick cosϕ

[admin]

here is CT clamp for M30 board: https://es.aliexpress.com/item/3256805341385666.html
just use output 0-1v or 0-50mA version of CT clamp sensor.

[nickdd]

here is CT clamp for M30 board: https://es.aliexpress.com/item/3256805341385666.html
just use output 0-1v or 0-50mA version of CT clamp sensor.

ok but these are the same SCT013 clamps with 3.5 jack as with M16 board.  On M30 picture I see terminals to screw them in.
Do you need to cut off the 3.5 jack then?


+ any feedback on other question about accuracy and measuring active power?

[admin]

1. Yes, just cut the 3.5 jack, connect cable directly.
2. accuracy and measuring active power. accuracy is high. active power, voltage, current , frequency, power consume .etc. these data value read from BL0910 chip directly, it's calculated by hardware chip, here is video demo : https://youtu.be/y3AuMg6DdqQ

[nickdd]

1. Yes, just cut the 3.5 jack, connect cable directly.
2. accuracy and measuring active power. accuracy is high. active power, voltage, current , frequency, power consume .etc. these data value read from BL0910 chip directly, it's calculated by hardware chip, here is video demo : https://youtu.be/y3AuMg6DdqQ

thanks, the video explained a lot. 

I would like to monitor power usage of electronics/computers/TV.
With M16v2 that reports high power (50W for tv in standby where real power usage is 0.5W)

Can you maybe post some results of measuring non-resistive loads like that?

Would the 5A clamps be accurate enough to measure loads of 1-2 Watts ?

No calibration needed with this M30 setup?

[admin]

Would the 5A clamps be accurate enough to measure loads of 1-2 Watts ? AC220v load 2W? it's too small for CT sensor.
No calibration needed with this M30 setup? Yes, not need.

[nickdd]

Would the 5A clamps be accurate enough to measure loads of 1-2 Watts ?      AC220v load 2W?  it's too small for CT sensor.
No calibration needed with this M30 setup?    Yes, not need.

I would like to see some real world measurements of small loads and know what levels of accuracy I could expect with this.
My Zennio KNX KEsplus device states it has 8W resolution, which is indeed what I see in the results.

And how come there is no calibration needed, it are the same clamps that are used then M16v2