Create new measurement and deprecate existing

1

hi all,

we have not got an EV and i would like to monitor its charging with the Iotawatt. Originally, we had 2 HVAC units that were metered seperatly. I have now combined these into the same CT, and would like to start a new set of measurements with the charger info. But im not sure how to do this. Can i simply rename it, and then it will just start it as a new thing? or will it still pull the info from that input when looking at historical info? I also send to influxDB. so would like to know what will happen there.

Whats the best way to proceed with retaining the old HVAC info, and starting a new measurement altogether if its possible.

Many thanks.

2

The datalog is fixed format and only contains the metrics for the 15 inputs. The name that you assign to an input is really only an alias. So changing the name will not have any affect on the historical data for that input. However, you can certainly query the input with a period that begins on or after the change in use and the result will reflect only the usage diring that period.

influx is a different matter. IoTaWatt uploads the data using the currently assigned name, so you are effectively starting a new measurement that is completely independent. If you are inclined to perpetuate the HVAC as a combined measurement, there are tools within influx to allow you to combine the two older measurements into a single measurement. I won’t elaborate because its quite different depending on the version of influx that you are using.

3

ok cool, so it sounds like i can just rename it in the iotawatt, and im good to go. I have looped both HVAC units through the same CT so no need to do anything for their measurements.

Is there a way on the Iotawatt to drop the history for a specific channel? as if i can drop all the history for the channel and start fresh, that would be grouse. I have the data persisted in Influx so thats fine.

also, why with the super long times between posting? im getting hit again with the 1 hour limit between posts like i did a while ago. Is it a spam control mechanism?