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Question about metering solutions.

whjohnson

Am looking for a quick and cheap solution to a requirement to provide metering for a single appliance, in this case a dairy fridge/chiller for a farmer.

The refrigeration unit is on a 13A plug and socket. and I thing the max draw when the compressor kicks in is only around 1.5A.

The guy wishes to 'rent out' the unit for a third party to use and he needs to  know how much to charge for it's electricity consumption.

What would be the easiest solution to this? Leave the existing socket outlet alone and just insert some kind of meter in line with the appliance flex? (If such an item exists)

Or just insert a meter between the supply and the socket outlet concerned. Note: metering is not possible from the consumer unit end.

A 100A meter seems like overkill for what is actually needed.

Comments welcome.

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    As the fridge supply is on 24/7 while the client is in possession,Clamp the fridge supply with and without the compressor and take the average. Measure the Uo to gain the kVA, multiply by the number of client hours then apply kWhr rating for the property and charge accordingly. Or we could complicate it a little and run the whole process through a PLC and monitor it via some method of telemetry.

    Just out of interest, its not anything to do with proving credability with the HMRC?

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  • 0

    As the fridge supply is on 24/7 while the client is in possession,Clamp the fridge supply with and without the compressor and take the average. Measure the Uo to gain the kVA, multiply by the number of client hours then apply kWhr rating for the property and charge accordingly. Or we could complicate it a little and run the whole process through a PLC and monitor it via some method of telemetry.

    Just out of interest, its not anything to do with proving credability with the HMRC?

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