This section can be used to ensure that measurements of the WEMS system's energy consumption are consistent with those indicated by the property's existing meter. This provides the client with evidence that the efficiency savings that have been forecast are actually being realized.
Screen
To access the screen, do one of the following:
- Go to | , or
- Click any icon in the Safety/Metering Layer of the Floorplan.
The Electricity Meter icon
The window with an electricity meter selected
| Selected Meter | Allows the selection of any meter in the system |
| Device ID | ID of the controller on which the meter's digital input is configured |
| Digital Channel | The channel of the digital input |
| Toggle Outside Air | Overlays Outside Air Temp on graph (uses right y-axis) |
| Toggle Alarm Threshold | Overlays alarm thresholds set up in Metering Schedules |
| Current Meter Reading | Current measurement for this meter |
| Day/Month/Year | Choose a different date and click Get Results to update the graph |
| Zoom in/out | Increase or decrease the scale of the graph |
| +/- | Scroll up and down kWh (left y-axis) |
| Half Hour View | View logs over 24 hours in 30-minute blocks |
| Daily View | View logs over a month in 1-day blocks |
| View As Text/View Graph | Toggles between visual and textual data views (text data can be copied) |
Configure Meter Screen
Click Configure to view the Configure Meter screen.
The Configure Meter screen
| Input Meter Reading | To synchronize the true meter reading with the value shown on the screen, enter the true value and click Synchronize |
| Meter Description | Name of meter |
| Meter Units | Unit of measure, e.g. kWh |
| Price Per Unit | Cost per unit, measured in GBP (pounds and pence) |
| Pre-Scaler | The value that divides/converts the number of pulses into 1 whole unit of the electric/gas/water supply being metered. Example: for a meter labelled 10 pulses = 1kWh, the pre-scaler is set to 10. The system will count the number of pulses per half hour then divide by the pre-scaler value to determine the number of kWhs used. |
| Min Pulse Width | The value in milliseconds that the pulse from the meter must be above in order to be recognised as a true meter pulse. This avoids counting 'fake' pulses generated by electrical noise or interference. |