Stop, behavior
rq-discharge-stop-behaviour
This parameter defines the handling of invalid measurements. The following options can be set:
|
ID |
Option |
Description |
|---|---|---|
|
1 |
hold value |
The last valid value is returned. |
|
2 |
use replace value (default) |
The replacement value set in Stop, replace value is returned. |
|
3 |
use learn value |
The learned value according to the water level of the W-v relation is returned. |
The option use learn value should only be used after the SQ has gained a w-v learning curve over a wide range of water levels. Depending on the dynamic of the river or channel this may take days to months. If the covered range is very small, the SQ may not be able to compute a learned value.
Use the option hold value only if are confident that it reasonably approximates the true flow!
When starting measurements at a new site it is recommended to use the option replace value with a distinct value, e.g. ‑999. This enables you to detect any unexpected conditions or behaviors of the flow regime or the setup.
If Stop, behavior is set to use learn value and the W-v table has no or only one entry, the Stop, replace value will be returned. This can be the case for a newly installed SQ that has gained velocity data for a narrow water level range only.