Consumption
The system provides different methods to calculate consumption values.
Positive consumption |
A change in consumption is only detected when the meter reading increases. |
Negative consumption |
A change in consumption is only detected if the meter reading drops. |
Positive and negative consumption |
A change in consumption is always detected when the meter reading changes. |
Positive consumption with reset |
A change in consumption is only detected when the meter reading increases. If the meter reading drops by more than 20 % relative to the previous value, this is interpreted as a reset. |
These options are available in Chart widgets, calculated data points and plausibility checks (e.g. on the Savings gauge or the Table report widget).
Meter network and ESG/media reporting widgets don’t support a configurable consumption calculation. Meter network widgets always assume a positive consumption with reset and consider a drop by 20 % as a meter reset. ESG/media reporting widgets consider any decrease of the daily maximum meter value as a reset.
Note that the consumption calculation works differently depending on the measurement type of the respective data point. Furthermore, the consumption calculation is not supported in the Meter network widget, because Meter network widgets only support the consumption type Meter, but not Consumption.
- Instantaneous value
Instantaneous values have no consumption. The average is calculated if any of the consumption functions above is selected for a data point with this measurement type.
- Consumption
This measurement type implies that the data point already contains consumption values. Each consumption value is distributed evenly over the period since the previous measurement, even across multiple aggregation intervals. Multiple values in the same aggregation interval are summed up. If there is no previous measurement, the consumption cannot be distributed.
The type of consumption determines whether only negative, only positive, or both positive and negative measurements are taken into account. Consumption values won’t reset, however, which means Positive consumption With reset behaves exactly like Positive consumption.
Example:
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Recorded consumption values
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Distributed hourly consumption
- Meter
This measurement type implies that the measurements of the data point are increasing in value. The consumption is calculated as the difference between two subsequent measurements and is distributed according to the consumption type.
For the consumption type Positive consumption with reset, a reset is detected if the meter value drops by more than 20 %. In case of a reset, the meter value starts at 0. Therefore, the value of the reset measurement is completely accounted for as a consumption.
Meter reset
The system generally assumes that meter readings are always recorded with increasing values. In the event that a meter is reset to 0 by a manual reset or meter overflow, the system will automatically compensate for this and still interpret it as a continuous meter reading.
However, this mechanism is only effective if the new meter reading is at least 20 % lower than the previous meter reading. This should normally be the case for a reset to 0.
At least two valid recorded values are required to calculate a consumption value. Zero meter readings are ignored in the calculation.
As mentioned above, ESG/media reporting widgets consider any decrease of the daily maximum meter value as a reset, but not any intermittent decreases.
Note
Meter replacement
The automatic compensation of the meter reset also allows a meter replacement to be carried out without additional intervention in the Avelon control system, as long as the rule described above is observed and the meter reading of the new meter is at least 20 % lower than the last meter reading of the replaced meter.