Re: Mains Current Montoring

[Jim Noble <yahoo-groups@xxxxxxxxxxxxxxxxxx>]

Anyone seen this?:

www.electrisave.co.uk

> The parts which make up the electrisave:
> The electrisave comprises:
> a sensor
> wireless transmitter
> receiver (monitor)
> How all the electrisave parts work together:
>
> The sensor is a clip-on current transformer that samples the electric
> current on each active phase wire inside your switchboard.
> These readings are aggregated and relayed by the 433 MHz wireless
> transmitter to the remote receiver/monitor. The receiver computes the
> approximate power use; energy cost and greenhouse gas generation and
> displays the results on a large portable LCD screen. Consumers can
> input specific country currency and voltage, electricity tariff rate,
> greenhouse gas conversion factor and peak load alarm value.


There are extra sensors for 3-phase supplies. In theory it ought to be
possible to use the transmitter with a generic 433MHz receiver (ISTR
seeing a generic one designed for use with the common 433Mhz temperature
sensors kicking around) to sample the current on at least 3 circuits...

It might also be possible to do something with the sensors directly.

It's not cheap though. £80 for the main unit, and a tenner for each
additional sensor...

Jim