I’m looking to calibrate some smart plugs after flashing them with ESPhome, can anyone recommend a decent power recording device so that I can calibrate the plug using other electronic equipment. Reviews on Amazon are a bit sketchy and I know Frenck has recommended a Zhurui PR10 Power Recorder in his video but was a bit pricier than I was hoping for, although if it is good then I’ll have to take the hit!
Thanks!
I am using two TP-Link HS110 (for a boiler and the other one for a heater) integrated into HA. These are not only power recorder devices but switches as well… Here is an example of the data available in Home Assistant.
switch.atlantic_salle_de_bain_haut off
current_power_w: 0.00
total_energy_kwh: 203.141
voltage: 240.7
current_a: 0.02
today_energy_kwh: 2.117
Thanks, I’m aware of these but I need something to calibrate a smart plug as I have flashed different firmware on it and need to check the readibngs it is outputting are correct and set offsets if not.
I may be thinking about this too simply, Couldn’t you just plug in a 60w lamp, and then ensure it shows 60w and adjust offset as required to achieve this?
THanks for the reply and I think that would work but I wanted to try a range of devices with different power consumption just so I can be a bit surer of the readings.
Did you ever find a solution?
The ZHURUI PR10-F looks good but it’s on the pricy side. Almost twice the price of most other energy Monitoring devices I’ve seen. Wondering if it’s worth it.
Same boat as you, want to check and calibrate a few smart energy monitor plugs that have been flashed with new firmware.
I didn’t find one, I did go with https://www.mylocalbytes.com/ who do plugs that are already calibrated
I would want to avoid “just” using a calibrated plug to calibrate others. Depending on the power monitoring hardware from the “master” device they might do more “harm” then actually calibrating. Specially the wide spread low end chips like HLW8012 are prone to don’t give “proper” readings when using different types of loads (best is always to calibrate them for the load you want to use). 
That said I calibrate all my power metering hardware with a pzem004t v3 which can be easily hooked up to HA with esphome (and the native api) and provide a high update cycle (0.1 seconds are no problem). 
One can then just plot both devices in HA side by side and easily spot were it is off and if it is a fixed offset to calculate the calibration/filters needed. 