| No. |
Phenomena |
Reason |
Solution |
| 1 |
The distance value always shows 250mm |
The object/surface is very close to the sensor and within the dead zone of the sensor. |
Do nothing. This is the standard feature of the sensor. The sensor can only measure the distance from 280mm to 7500mm. |
| The transducer is covered by a thick layer of dust or particles. |
Clean the transducer surface with a soft detergent and clean water. |
| 2 |
The distance value always shows distance last time or zero value |
The object/surface is too far away from the sensor. The object/surface is out of the detection range of the sensor. |
Make sure the measuring distance to be within the detection range of the sensor (280mm to 7500mm) |
| 3 |
The distance/level value fluctuates largely. |
The object's surface is not flat. |
Try to increase the parameter Num_of_samples to increase the filtering so that the sensor can deliver a stable average value. But this will cause the battery life to be shorter. |
| 4 |
The level value is not accurate with the actual level of liquid |
The transducer is covered by a thin layer of dust or particles. |
Clean the transducer surface with a soft detergent and clean water. |
| The CONSTANT_A and CONSTANT_B settings are wrong. |
Check the CONSTANT_A and CONSTANT_B settings again |
| 5 |
The value of HW_Error field equals 1 |
The connection between the transducer and the main PCB are lost. |
Open the sensor housing and check the internal wire and connector from the transducer to the wireless PCB. |
| The transducer got a problem. |
Contact the manufacturer for repair or replacement. |
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