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From: legg <legg@nospam.magma.ca>
Newsgroups: sci.electronics.repair
Subject: Re: OT: advise about energy consumption logging at the plug
Date: Sun, 15 Dec 2024 10:08:17 -0500
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On Sun, 15 Dec 2024 08:30:21 -0000 (UTC), Wu Ming <wu.ming2@icloud.com
> wrote:

>I did search for a more appropriate group. Please advise where I can ask
>about what on subject. Thanks.

Your facility has a watt-hour meter that you can read and 
record manually.

For single devices or wall outlets, the simplest measurement 
is probably a kill-a-watt or one of its clones.This will 
record energy consumed since a last buttom-press or application 
of input power.

First order approximation for real datalogging is a record 
of current, stored on a portable PC. Multimeters with PC 
interface are becoming fairly inexpensive, to make this 
measurement - software to record and manipulate data may be 
slightly buggy or poorly supported.

Haven't seen a really cheap datalogger, but haven't looked 
lately. These will also mant to interface to a PC for 
data recording analysis and display.

RL