Reading Atlas Mk10D Multirate Meter

Qyburn

I'm trying to help an outfit review their electricity cost, tariff etc. It's a three phase supply with an EDMI Atlas Mk10D meter.

They're being billed by SSE on a dual rate, and every single reading on their bills is estimated. So an early step would be to get real meter readings to them.

The problem is I can't make sense of the meter display. Stepping through the screens there are two kWh readings. One is labelled "Pr t" and hasn't changed in a few days. The other is labelled "totAl" and does increase.

So it seems there's a missing reading somewhere, there should be a second kWh count that, when added to "Pr t" would add up to "totAl".

I have been given a bunch of photos which are said to include all the screens, these are in the order taken ..
Pr t        kWh  31671
Pr Hu    kvarh
Pr H2    kVAh
tiNE      (time of day)
dAtE
totAl     kWh  32872
Nd         kW
N2         kVA
Hu         kvarh
H2         kVAh
Pr t        kWh (again) 31671
Pr Nd    kW
Pr N2    kVA
Pr Hu    kvarh
Pr H2    kVAh

I can guess that all the readings prefixed by "Pr" refer to one rate, those with no prefix refer to the total, but I don't see the second rate.  Although "Pr t" hasn't changed in five days its current reading isn't much less than total 

There are loads of documents covering the Mk10A but that is not the same meter, the printed labelling is different and the displayed readings aren't in the same form.

debitcardmayhem

Don’t know if this helps https://www.energyassets.co.uk/wp-content/uploads/2021/08/EA_RMM_EDMI-MK10.pdf

Qyburn

debitcardmayhem said:

Don’t know if this helps https://www.energyassets.co.uk/wp-content/uploads/2021/08/EA_RMM_EDMI-MK10.pdf

Thanks. That's one of the many documents describing the Mk10A which is a different meter. Pretty much all of the screens are different from the Mk10D.

Ildhund

I too ended up falling down rabbit holes in search of an EDMI Atlas Mk 10D manual. I wasted far too much time reading threads on Australian forums which largely consisted of posts similar to @Qyburn's OP. However, I did come across this slightly archaic document which goes into some detail about the mysteries of this meter's menu structure: EDMI Atlas Hardware Reference Manual. The most important thing I garnered was that the menus are configurable and can vary significantly from supplier to supplier and from DNO to DNO. 

Qyburn

I'm going to phone SSE on Monday. We need to get real readings as I'm pretty sure the estimates are unrealistically high. If "toAl" (32872) is truly the total of day and night, then a day reading of 33000+ and night 20000+ simply can't be correct.

Qyburn

Ildhund said:

I too ended up falling down rabbit holes in search of an EDMI Atlas Mk 10D manual. I wasted far too much time reading threads on Australian forums which largely consisted of posts similar to @Qyburn's OP. 

Can I ask, did you manage to actually read the meter you were dealing with?

Ildhund

Qyburn said:
Can I ask, did you manage to actually read the meter you were dealing with?

Errr..., no -  I was only trying out my Google-fu with a view to finding a manual for you! And yes, I should get out more.

It's really infuriating that some meter manufacturers don't make proper manuals publicly available; Kaifa even said that, because of retailers' customizations, they expect suppliers to create their own manuals for their customers. @Scot_39 and I were once hunting for other EDMI manuals and eventually found the ones we needed on the manufacturer's website, discovering that  one display icon indicated diametrically opposite states on two otherwise very similar models. We found out a few weeks later that these manuals were no longer available at the site. 

debitcardmayhem

Found this https://forum.ovoenergy.com/home-and-heating-138/how-do-i-take-export-readings-from-my-emlite-emp1-av-19551?tid=19551&fid=138 
don’t know if it helps, going for shopping

Qyburn

Ildhund said:

Qyburn said:
Can I ask, did you manage to actually read the meter you were dealing with?

Errr..., no -  I was only trying out my Google-fu with a view to finding a manual for you! And yes, I should get out more

Appreciated.

Regarding suppliers providing documentation, some do give quite detailed information about specific meter models.  Unfortunately SSE doesn't.

Qyburn

debitcardmayhem said:

Found this https://forum.ovoenergy.com/home-and-heating-138/how-do-i-take-export-readings-from-my-emlite-emp1-av-19551?tid=19551&fid=138 
don’t know if it helps, going for shopping

It confirms they're not always the same. The Mk10D that thread shows an "r1" register, which I don't see.

Qyburn

It seems SSE can't read it either, I was there today with their meter reader and he did not know how to see Day or Night readings, so just recorded total (the "totAl" register).  At least he agreed that if they're billing on total, they shouldn't also bill either day or night.

The other odd thing is that the other kWh register "Pr t" increases sometimes but not others.

 07/08/2025   Pr t 00031671   totAl 00032033

 22/08/2025   Pr t 00031671   totAl 00032872

 04/09/2025   Pr t 00033365   totAl 00033575 
 09/09/2025   Pr t 00033365   totAl 00033795

Makes me wonder if it's a snapshot of the total, maybe a month end.

Also noticed the meter replacement card from when it was installed last September, it only records one opening reading of 0 rather than two. Although maybe they're just assumed to both be zero as well.

SSE weren't answering this afternoon, I'll phone tomorrow morning to see what they have to say.