ฝัง
- เผยแพร่เมื่อ 19 ก.ย. 2024
- Looking at the next project with the goal of reading 0 volts, 0 amps and 0 watts on the AC panel meter.
Original PZEM-061 AC panel meter install in the Tenma 72-1098 variable isolated AC power supply:
• Tenma 72-1098 Isolated...
I plan on replacing the 0-100A PZEM-061 meter with a separately powered 0-20A PZEM-021 meter:
• PeaceFair PZEM-021 AC ...
To be continued, next video a look inside the power supply...
Be sure to rate, comment and share
And as always, thanks for watching
SOUNDTRACK:
Louisiana Fairytale by Austin Rogers
web.archive.or...
Great Work. Very thoughtful and good video. We will soon see the fix for precision reading.
Glad am here.
Thanks for the comment. I know when I initially hooked up a power meter in this supply, I just connected wires where I could and it seemed to work, albeit with an offset in the power reading. But to get rid of that offset takes some thought to figure out why it was there in the first place.
have you modified this power meter for separate power, that might help Amp n Watts bring to 0 But I think the manufacturer of device purposely induced this erratic reading. Considering the power on, the load of this device itself. if you hook your other meter with this meter to check the watts and amps it actually consuming itself.
Yes, I cover that in a separate video:
th-cam.com/video/b2MXXSuzM2k/w-d-xo.html
In doing that you have to be clear on properly identifying the line and neutral connections since that now matters.
IIRC, you placed the current sensor on the current meter wires. Could you be reading the current that the meter uses, itself?
Yes, that is correct. Also, the meter uses a capacitive dropper for it's power supply, making the power factor low and thus the apparent current hig.
I have problem with PZEM-021 . Since last week its start showin 36 Volt intead of 220 Volt . I dont know why ,nothing special is happend. its not possible reset it , and now it is unuseble . Any advice ?
It may be the input capacitor and/or resistor that form the power supply is failing. You might try the power supply mod I do in this video series, and while there, test the values of the cap and resistor and replace if needed.
I like this meter as well. My problem is trying to figure out how to mount it into a box that allows me to set it into a wall. Anyone have any experiences with this?
Not too hard to do with a sheet metal nibbler. That's what I used on this project as well as in this one, where I set the meter into a metal gang box with a metal cover plate::
th-cam.com/video/LhR-Z6lBeZw/w-d-xo.html
You can get hand operate versions, or there are versions that attach to a drill, etc.:
amzn.to/2F7xR2B