PM/ION Meters - International Standard of Accuray Measurement

[Anonymous user]

Hello,

Recently, a customer told me about the ION 7500 accuracy and the standard associated to this accuracy, so I was searching about this issue and I have a question.

Could you tell me what are the International Standars of the followings ION and PM meters:

ION meters:

ION 6200:

ION 7300:

ION 7330/7350:

ION 7600/7500:

ION 7550/7650: IEC 62053-22 0,2S

ION 8600:

ION 8650:

PM meters:

PM 700:

PM 800:

For example, I found in some technical notes for ION6200 says IEC 60687 class 0.5 and in others class 0.5s.

And what is the difference between a meter with accuracy 0.5 and accuracy 0.5s class? what does the "s" mean?

[Anonymous user]

, perhaps you can assist.

[Anonymous user]

Farid, I moved your post to the Power Monitoring Hardware forum so that more of the right people see it.  Hope it helps.

[VictorMarincus · Accepted solution]

Different standards cover different accuracy classes. As well, all our meter's Technical Leaflets expose the standard compliance and the respective accuracy.

Eg.

IEC 62053-11 covers Accuracy Class 0.5, 1.0 & 2 for electromechanical meters for active energy (watt-hours)

IEC 62053-21 covers Accuracy Class 1.0 & 2 for static/electronic meters for active energy (watt-hours)

IEC 62053-22 covers a higher Accuracy Standard of 0.2S and 0.5S for static/electronic for active energy (watt-hours)

Note: Please note that IEC 60687 is no longer valid - it was replaced by IEC 62053-22.

In the following picture you can see an extract from the 2 standards showing the differences between 0,5 and 0,5s. A "s" mark means that the meter is more accurate at low currents.

[Anonymous user]

Hello Victor,

Thank you very much for your answer, is more clearly for me now.

Just one question more, how about the IEC 687 class 0.2 or 0.2S in ION meters 7500/7600/8600? this standard belong to these model meters?

Regards

[VictorMarincus]

Please refer to the note in my previous reply.