Frient Electricity Meter Interface 2 doesn't recognize energy consumption peaks

I installed the “Electricity Meter Interface 2” from frient two weeks ago, and I’m pretty satisfied with this little gadget.

Well, at least until I recently discovered that it doesn’t register high energy consumption peaks at all. For example, when my washing machine, dishwasher, or electric kettle are running—all devices that consume relatively large amounts of energy—those usages are missed.

I looked at my energy dashboard and was confused by the negative “untracked consumption”:

So, I started examining the logs from the past two weeks and discovered that when I run my dishwasher or washing machine (each equipped with a smart plug), the consumption of these high-consumption devices isn’t tracked by the Electricity Meter Interface 2:


Blue: data from the meter, orange: data from the plug:

Ultimately, I plugged my electric kettle into my smart plug, went to my electric meter, and turned the kettle on remotely:

As you can see, the electric meter recognizes the correct power consumption, and so does the smart plug. Unfortunately, the “Electricity Meter Interface 2” again failed to register it.

When I installed the “Electricity Meter Interface 2,” I had to adjust the unit_of_measure in the Zigbee settings, as the divisor is 10,000 instead of 1,000. I can’t imagine this would cause such significant discrepancies.

My electric meter is the EDL21 from EMH.

Is there anything I can try to fix this, or should I contact frient?

Does the washing machine show up in the history for the “instantaneous demand” sensor?

I turned mine on just before noon today. I think I’ve got the same electricity meter device:

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Yes, I think with are using the same device :slight_smile:

I renamed the "instantaneous demand” and the washing machine doesn’t show up in its history:

The blue graph shows the "instantaneous demand” and the yellow one the washing machine :slight_smile:

Sounds like you’ve got a faulty device if it’s not showing up on either sensor.

What do you mean with “either sensor”?
The plug shows the usage, the frient meter doesn’t.

Either sensor in the Frient meter.

I contacted frient, I’ll keep ypu updated :slight_smile:

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I’m thinking about buying one of these devices and my meter is set to 3200 pulses per kwh. is it possible that with a 10,000 pulse meter, with very high load devices, ithe sensor is not keeping up with the blink rate of the LED ?

Hey, I could be way off here, but the Electricity Meter Interface 2 seems to be a device where you mesure the impulses from the infrared LED right?
From your screenshot it seems you are using it on the SML interface. The Electricity Meter Interface 2 should be placed here

You can also buy a SML reader to get 100% correct values btw.
Take a look at this or anything similar. (I hope amazon links are allowed)
But it is Wifi, so keep that in mind. For Power values you might need to enter the PIN you can get from your energy company

This perticular device says:
Kompatibel mit: Zählern, die ein blinkendes LED-Licht mit einer Standard-Ausgangsrate von 1000 Impulsen/kWh haben. Konfigurierbare Impulsrate mit ausgewählten Hubs verfügbar.
or
Compatible with meters with 1000 pulses/kWh. So 10.000 with heavy loads, maybe no, but if you have smart meter use the device I mentioned above or a device like the Shelly 3EM.

I bought one of these in the end and my meter is set to 3200 pulses. I was able to adjust the device to read that rate using ZHA and it matches my official meter readings exactly.