Measurement values provided
The following measurement values are provided by the BLE Radar . The BLE Radar does not have any user interface nor can it establish a direct connection to the myDatanet server. It therefore depends on the data logger used which of these measurement values are available on the web interface of the myDatanet server.
Water level = (mounting height - distance) + trimming
This is a status register with individual flags. Several of these flags can be set at the same time.
| Flags | Status | Explanation |
|---|---|---|
| No Bit set | Ok | The distance colud be determined successfully and the water level could be calculated based on it. |
| Bit 0 (0x01) | Hold | The distance could not be determined. The last known value is held for a limited number of measurements. The water level is calculated based on the distance held. |
| Bit 1 (0x02) | Overflow | Reserved for extensions |
| Bit 2 (0x04) | Underflow | The distance could not be determined. The values for distance and level are invalid. |
| Bit 3 (0x08) | Level Underflow | The calculated water level is negative. This can occur if: Distance > mounting height + trimming |
| Bit 4 (0x10) | Level set to zero | The distance could not be determined. The distance is set to the configured mounting height. The level is set to 0. |
| Bit 5 (0x20) | Infinite hold | The distance could not be determined. The last known value is held until a valid measurement will have been taken again. The level is calculated based on the distance that is being held. |
This measurement value is also used for the automatic compensation of temperature-related influences on the amplitude. Due to self-heating, the temperature of the electronics may deviate from the ambient temperature.
