Smart Biogas Meter Data
Introduction
Device data is shown in graphs and tables on the digester data page for every customer. The graphs show data from the meter’s sensors - flow and pressure - and also calculated gas consumption. You can click each of these parameters on the graph to show or hide them on the graph.
The units for the graph plot are Pascal for pressure, m3/h for flow, and m3 for gas consumption. The smallest unit of time for the plot is 1 hour as the device sends data to the server every hour.
Pressure (average): Average pressure of the digester in that hour in KPa.
Flow (average): Average flow in that hour in m3/h.
Consumption: Total amount of gas consumed in that hour in m3.
How can a user download the device data?
A user can download the data in CSV format, select the start and end date for the period which you want to download.
What are the different parameters in the CSV file?
Flow and pressure values are being sensed by the device continuously and the average value is calculated every minute and stored locally on the device and one-hour data is sent every hour to the server. The consumption value is calculated from the flow. The CSV file has the following parameters.
| Unix Time |
It is the number of seconds that have elapsed since the Unix epoch. |
| Local time |
This is the local time in 24H format. |
| Battery Voltage (V) |
The voltage of the Li-ion battery that is inside the device is used to power the device. |
| Battery Current (A) |
The value of current supplied by a solar panel to charge the li-ion battery. |
| Solar Voltage (V) |
Solar panel voltage. During the night, the voltage of the battery is displayed here. |
| Temperature (°C) | The temperature inside the device enclosure. |
| RSSI (dB) |
This value tells about the signal strength, lower the value better the signal strength. If the value is above 100 it denotes a poor network. |
| Pressure (Pa) |
Digester pressure value measured by the sensor. |
| Flow (lph) |
Gas flow value measured by flow sensor in lph, 1000lph=1m3/h. |
| Gas Consumption (l) |
Total gas consumption from the day of meter installation. 1000l=1m3 |
| Max Pressure (Pa) |
Maximum instant pressure value sensed by sensor, this value can be higher than the value shown is an average value over the last minute. |
| Max Flow (lph) |
Maximum instant flow value sensed by flow sensor, this value can be higher than the value shown is an average value over the last minute. |
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